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4 Antihistamines, immunotherapy, and allergic emergencies

4 Antihistamines, immunotherapy, and allergic emergencies

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152



3.4.1 Antihistamines



tion 4.1.1). Most of the sedating antihistamines are

relatively short-acting, but promethazine may be effective for up to 12 hours. Alimemazine and promethazine have a more sedative effect than chlorphenamine and cyclizine (section 4.6). Chlorphenamine is

used as an adjunct to adrenaline (epinephrine) in the

emergency treatment of anaphylaxis and angioedema

(section 3.4.3).



3 Respiratory system



Cautions and contra-indications



Antihistamines

should be used with caution in children with epilepsy.

Most antihistamines should be avoided in acute porphyria, but some are thought to be safe (see section

9.8.2). Sedating antihistamines have significant antimuscarinic activity—they should not be used in neonates and should be used with caution in children with

urinary retention, glaucoma, or pyloroduodenal

obstruction. Phenothiazine sedating antihistamines,

such as alimemazine and promethazine, should not be

given to children under 2 years, except on specialist

advice, because the safety of such use has not been

established. See also MHRA/CHM advice, p. 166. Interactions: see Appendix 1 (antihistamines).



Hepatic



impairment Sedating antihistamines

should be avoided in children with severe liver disease—increased risk of coma.



Pregnancy Most manufacturers of antihistamines

advise avoiding their use during pregnancy; however

there is no evidence of teratogenicity, except for

hydroxyzine where toxicity has been reported with

high doses in animal studies. The use of sedating antihistamines in the latter part of the third trimester may

cause adverse effects in neonates such as irritability,

paradoxical excitability, and tremor.



Breast-feeding



Most antihistamines are present in

breast milk in varying amounts; although not known to

be harmful, most manufacturers advise avoiding their

use in mothers who are breast-feeding.



Side-effects



Drowsiness is a significant side-effect

with most of the older antihistamines although paradoxical stimulation may occur rarely in children, especially with high doses. Drowsiness may diminish after a

few days of treatment and is considerably less of a

problem with the newer antihistamines (see also notes

above). Side-effects that are more common with the

older antihistamines include headache, psychomotor

impairment, and antimuscarinic effects such as urinary

retention, dry mouth, blurred vision, and gastro-intestinal disturbances. Other rare side-effects of antihistamines include hypotension, palpitation, arrhythmias,

extrapyramidal effects, dizziness, confusion, depression,

sleep disturbances, tremor, convulsions, hypersensitivity reactions (including bronchospasm, angioedema,

anaphylaxis, rashes, and photosensitivity reactions),

blood disorders, and liver dysfunction.



Non-sedating antihistamines

Skilled tasks Although drowsiness is rare, children

and their carers should be advised that it can occur and

may affect performance of skilled tasks (e.g. cycling or

driving); alcohol should be avoided.



ACRIVASTINE

Cautions see notes above

Contra-indications see notes above; also hypersensitivity to triprolidine



BNFC 2013–2014

Renal impairment avoid in severe impairment

Pregnancy see notes above

Breast-feeding see notes above

Side-effects see notes above

Indications and dose

Symptomatic relief of allergy such as hay fever,

chronic idiopathic urticaria

. By mouth

Child 12–18 years 8 mg 3 times daily

Acrivastine (Non-proprietary)

Capsules, acrivastine 8 mg, net price 12-cap pack =

£2.59, 24-cap pack = £4.49. Counselling, skilled

tasks

Brands include Benadryl ® Allergy Relief



BILASTINE

Cautions see notes above

Contra-indications see notes above

Pregnancy avoid—limited information available; see

also notes above

Breast-feeding avoid—no information available; see

also notes above

Side-effects headache, malaise; less commonly abdominal pain, diarrhoea, increased appetite, weight gain,

thirst, gastritis, prolongation of the QT interval, dyspnoea, anxiety, insomnia, vertigo, dizziness, pyrexia,

oral herpes, tinnitus

Indications and dose

Symptomatic relief of allergic rhinoconjunctivitis

and urticaria

. By mouth

Child 12–18 years 20 mg once daily

Counselling Advise carer and child that child should take

tablet 1 hour before or 2 hours after food or fruit juice



Ilaxten® (Menarini) TA

Tablets, scored, bilastine 20 mg, net price 30-tab

pack = £15.09. Label: 23, counselling, administration



CETIRIZINE HYDROCHLORIDE

Cautions see notes above

Contra-indications see notes above

Renal impairment use half normal dose if estimated

glomerular filtration rate 30–50 mL/minute/1.73m2;

use half normal dose and reduce dose frequency to

alternate days if estimated glomerular filtration rate

10–30 mL/minute/1.73m2; avoid if estimated glomerular filtration rate less than 10 mL/minute/1.73m2

Pregnancy see notes above

Breast-feeding see notes above

Side-effects see notes above

Licensed use not licensed for use in children under 2

years

Indications and dose

Symptomatic relief of allergy such as hay fever,

chronic idiopathic urticaria, atopic dermatitis

. By mouth

Child 1–2 years 250 micrograms/kg twice daily

Child 2–6 years 2.5 mg twice daily

Child 6–12 years 5 mg twice daily

Child 12–18 years 10 mg once daily



BNFC 2013–2014

Cetirizine (Non-proprietary)

Tablets, cetirizine hydrochloride 10 mg, net price 30tab pack = 95p. Counselling, skilled tasks

Dental prescribing on NHS Cetirizine 10 mg Tablets may

be prescribed



Oral solution, cetirizine hydrochloride 5 mg/5 mL,

net price 200 mL = £2.03. Counselling, skilled tasks

Note Sugar-free versions are available and can be ordered

by specifying ‘sugar-free’ on the prescription

Excipients may include propylene glycol (see Excipients

p. 2)

Dental prescribing on NHS Cetirizine Oral Solution 5 mg/

5 mL may be prescribed



3.4.1 Antihistamines



153



Fexofenadine Hydrochloride (Non-proprietary) A

Tablets, f/c, fexofenadine hydrochloride 120 mg, net

price 30-tab pack = £2.95; 180 mg, 30-tab pack =

£3.68. Label: 5, counselling, skilled tasks

Telfast® (Sanofi-Aventis) A

Tablets, f/c, peach, fexofenadine hydrochloride

30 mg, net price 60-tab pack = £5.46; 120 mg, 30tab pack = £5.99; 180 mg, 30-tab pack = £7.58.

Label: 5, counselling, skilled tasks



LEVOCETIRIZINE HYDROCHLORIDE

Note Levocetirizine is an isomer of cetirizine



Desloratadine (Non-proprietary) A

Tablets, desloratadine 5 mg, net price 30-tab pack =

£6.77. Counselling, skilled tasks



Levocetirizine Hydrochloride (Non-proprietary) A

Tablets, levocetirizine hydrochloride 5 mg, net price

30-tab pack = £4.39. Counselling, skilled tasks



Neoclarityn® (MSD) A

Tablets, blue, f/c, desloratadine 5 mg, net price 30tab pack = £6.77. Counselling, skilled tasks

Oral solution, desloratadine 2.5 mg/5 mL, net price

100 mL (bubblegum-flavour) = £6.77, 150 mL =

£10.15. Counselling, skilled tasks



Xyzal® (UCB Pharma) A

Tablets, f/c, levocetirizine hydrochloride 5 mg, net

price 30-tab pack = £4.39. Counselling, skilled tasks

Oral solution, sugar-free, levocetirizine hydrochloride 2.5 mg/5 mL, net price 200 mL = £6.00.

Counselling, skilled tasks



Excipients include propylene glycol (see Excipients p. 2)



FEXOFENADINE HYDROCHLORIDE

Note Fexofenadine is a metabolite of terfenadine



Cautions see notes above

Contra-indications see notes above

Pregnancy see notes above

Breast-feeding see notes above

Side-effects see notes above

Indications and dose

Symptomatic relief of seasonal allergic rhinitis

. By mouth

Child 6–12 years 30 mg twice daily

Child 12–18 years 120 mg once daily

Symptomatic relief of chronic idiopathic urticaria

. By mouth

Child 12–18 years 180 mg once daily



LORATADINE

Cautions see notes above

Contra-indications see notes above

Hepatic impairment reduce dose frequency to alternate days in severe impairment

Pregnancy see notes above

Breast-feeding see notes above

Side-effects see notes above

Indications and dose

Symptomatic relief of allergy such as hay fever,

chronic idiopathic urticaria

. By mouth

Child 2–12 years

Body-weight under 30 kg 5 mg once daily

Body-weight over 30 kg 10 mg once daily

Child 12–18 years 10 mg once daily



3 Respiratory system



Cautions see notes above

Contra-indications see notes above; also hypersensitivity to loratadine

Renal impairment use with caution in severe

impairment

Pregnancy see notes above

Breast-feeding see notes above

Side-effects see notes above; rarely myalgia; very

rarely hallucinations

Indications and dose

Symptomatic relief of allergy such as hay fever,

chronic idiopathic urticaria

. By mouth

Child 1–6 years 1.25 mg once daily

Child 6–12 years 2.5 mg once daily

Child 12–18 years 5 mg once daily



Cautions see notes above

Contra-indications see notes above

Renal impairment estimated glomerular filtration rate

30–50 mL/minute/1.73 m2, reduce dose frequency to

alternate days; estimated glomerular filtration rate

10–30 mL/minute/1.73 m2, reduce dose frequency to

every 3 days; estimated glomerular filtration rate less

than 10 mL/minute/1.73 m2, avoid

Pregnancy see notes above

Breast-feeding see notes above

Side-effects see notes above; very rarely weight gain

Licensed use tablets not licensed for use in children

under 6 years

Indications and dose

Symptomatic relief of allergy such as hay fever,

urticaria

. By mouth

Child 2–6 years 1.25 mg twice daily

Child 6–18 years 5 mg once daily



DESLORATADINE

Note Desloratadine is a metabolite of loratadine



154



3.4.1 Antihistamines



Loratadine (Non-proprietary)

Tablets, loratadine 10 mg, net price 30-tab pack =

£1.20. Counselling, skilled tasks

Dental Prescribing on NHS Loratadine 10 mg Tablets may

be prescribed



Syrup, loratadine 5 mg/5 mL, net price 100 mL =

£2.65. Counselling, skilled tasks

Excipients may include propylene glycol (see Excipients,

p. 2)

Dental Prescribing on NHS Loratadine Syrup 5 mg/5 mL

may be prescribed



3 Respiratory system



MIZOLASTINE

Cautions see notes above

Contra-indications see notes above; also susceptibility to QT-interval prolongation (including cardiac

disease and hypokalaemia)

Hepatic impairment manufacturer recommends

avoid in significant impairment

Pregnancy see notes above

Breast-feeding see notes above

Side-effects see notes above; weight gain; anxiety,

asthenia; less commonly arthralgia and myalgia

Indications and dose

Symptomatic relief of allergy such as hay fever,

urticaria

. By mouth

Child 12–18 years 10 mg once daily

®



Mizollen (Sanofi-Aventis) A

Tablets, m/r, scored, mizolastine 10 mg, net price

30-tab pack = £5.77. Label: 25, counselling, skilled

tasks



BNFC 2013–2014



ALIMEMAZINE TARTRATE

(Trimeprazine tartrate)

Cautions see notes above

Contra-indications see notes above

Hepatic impairment see notes above

Renal impairment avoid

Pregnancy see notes above

Breast-feeding see notes above

Side-effects see notes above

Licensed use not licensed for use in children under 2

years

Indications and dose

Urticaria, pruritus

. By mouth

Child 6 months–2 years 250 micrograms/kg

(max. 2.5 mg) 3–4 times daily—specialist use only

Child 2–5 years 2.5 mg 3–4 times daily

Child 5–12 years 5 mg 3–4 times daily

Child 12–18 years 10 mg 2–3 times daily, in

severe cases up to max. 100 mg daily



Premedication section 15.1.4

. By mouth

Child 2–7 years up to max. 2 mg/kg 1–2 hours

before operation

Alimemazine (Non-proprietary) A

Tablets, alimemazine tartrate 10 mg, net price 28-tab

pack = £5.99. Label: 2

Oral Solution, alimemazine tartrate 7.5 mg /5 mL,

net price 100 mL = £13.71; 30 mg/5 mL, 100-mL =

£40.00. Label: 2



RUPATADINE

Cautions see notes above; also susceptibility to QTinterval prolongation (including cardiac disease and

hypokalaemia)

Hepatic impairment manufacturer advises avoid—no

information available

Renal impairment manufacturer advises avoid—no

information available

Pregnancy manufacturer advises caution—limited

information available; see also notes above

Breast-feeding manufacturer advises caution; see

also notes above

Side-effects see notes above; also asthenia; less commonly pyrexia, irritability, increased appetite, arthralgia, and myalgia

Indications and dose

Symptomatic relief of allergic rhinitis and urticaria

. By mouth

Child 12–18 years 10 mg once daily

Rupafin® (GSK) TA

Tablets, salmon, rupatadine (as fumarate) 10 mg, net

price 30-tab pack = £5.00. Counselling, skilled tasks



Sedating antihistamines

Skilled tasks Drowsiness may affect performance

of skilled tasks (e.g. cycling or driving); sedating effects

enhanced by alcohol.



CHLORPHENAMINE MALEATE

(Chlorpheniramine maleate)

Cautions see notes above

Contra-indications see notes above

Hepatic impairment see notes above

Pregnancy see notes above

Breast-feeding see notes above

Side-effects see notes above; also exfoliative

dermatitis and tinnitus reported; injections may cause

transient hypotension or CNS stimulation and may be

irritant

Licensed use syrup not licensed for use in children

under 1 year; tablets not licensed for use in children

under 6 years; injection not licensed for use in neonates

Indications and dose

Symptomatic relief of allergy such as hay fever,

urticaria, food allergy, drug reactions, relief of

itch associated with chickenpox

. By mouth

Child 1 month–2 years 1 mg twice daily

Child 2–6 years 1 mg every 4–6 hours, max. 6 mg

daily

Child 6–12 years 2 mg every 4–6 hours, max.

12 mg daily

Child 12–18 years 4 mg every 4–6 hours, max.

24 mg daily



BNFC 2013–2014

Emergency treatment of anaphylactic reactions,

symptomatic relief of allergy

. By intramuscular or intravenous injection

Child under 6 months 250 micrograms/kg (max.

2.5 mg), repeated if required up to 4 times in 24

hours

Child 6 months–6 years 2.5 mg, repeated if

required up to 4 times in 24 hours

Child 6–12 years 5 mg, repeated if required up to

4 times in 24 hours

Child 12–18 years 10 mg, repeated if required up

to 4 times in 24 hours

Administration for intravenous injection, give over 1

minute; if small dose required, dilute with Sodium

Chloride 0.9%

Chlorphenamine (Non-proprietary)

Tablets, chlorphenamine maleate 4 mg, net price 28

= £1.01. Label: 2

Dental prescribing on NHS Chlorphenamine tablets may

be prescribed



Oral solution, chlorphenamine maleate 2 mg/5 mL,

net price 150 mL = £2.51. Label: 2

Note Sugar-free versions are available and can be ordered

by specifying ‘sugar-free’ on the prescription

Dental prescribing on NHS Chlorphenamine oral solution

may be prescribed



Piriton® (GSK Consumer Healthcare)

Tablets, yellow, scored, chlorphenamine maleate

4 mg, net price 28 = £1.62. Label: 2

Syrup, chlorphenamine maleate 2 mg/5 mL, net

price 150 mL = £2.39. Label: 2



155



Atarax® (Alliance) A

Tablets, both f/c, hydroxyzine hydrochloride 10 mg

(orange), net price 84-tab pack = £2.18; 25 mg

(green), 28-tab pack = £1.17. Label: 2

Ucerax® (UCB Pharma) A

TabletsD, f/c, scored, hydroxyzine hydrochloride

25 mg, net price 25-tab pack = £1.22. Label: 2

Syrup, hydroxyzine hydrochloride 10 mg/5 mL. Net

price 200-mL pack = £1.78. Label: 2



KETOTIFEN

Cautions see notes above

Contra-indications see notes above

Hepatic impairment see notes above

Pregnancy see notes above

Breast-feeding see notes above

Side-effects see notes above; also irritability, nervousness; less commonly cystitis; rarely weight gain;

very rarely Stevens-Johnson syndrome

Indications and dose

Symptomatic relief of allergy such as allergic

rhinitis

. By mouth

Child 3–18 years 1 mg twice daily

Zaditen® (Swedish Orphan) A

Tablets, scored, ketotifen (as hydrogen fumarate)

1 mg, net price 60-tab pack = £7.53. Label: 2, 21

Elixir, ketotifen (as hydrogen fumarate), 1 mg/5 mL,

net price 300 mL (strawberry-flavoured) = £8.91.

Label: 2, 21



HYDROXYZINE HYDROCHLORIDE

Cautions see notes above; also susceptibility to QTinterval prolongation

Contra-indications see notes above

Hepatic impairment reduce daily dose by one-third;

see also notes above

Renal impairment reduce daily dose by half

Pregnancy toxicity in animal studies with high doses;

see also notes above

Breast-feeding see notes above

Side-effects see notes above

Licensed use Ucerax ® syrup not licensed for use in

children under 1 year

Indications and dose

Pruritus

. By mouth

Child 6 months–6 years initially 5–15 mg at night,

increased if necessary to 50 mg daily in 3–4

divided doses

Child 6–12 years initially 15–25 mg at night,

increased if necessary to 50–100 mg daily in 3–4

divided doses

Child 12–18 years initially 25 mg at night,

increased if necessary to 100 mg in 3–4 divided

doses

1. A restriction does not apply where administration is for

saving life in emergency



PROMETHAZINE HYDROCHLORIDE

Cautions see notes above; also severe coronary artery

disease

Contra-indications see notes above

Hepatic impairment see notes above

Renal impairment use with caution

Pregnancy see notes above

Breast-feeding see notes above

Side-effects see notes above; also restlessness

Indications and dose

Symptomatic relief of allergy such as hay fever,

insomnia associated with urticaria and pruritus

. By mouth

Child 2–5 years 5 mg twice daily or 5–15 mg at

night

Child 5–10 years 5–10 mg twice daily or 10–25 mg

at night

Child 10–18 years 10–20 mg 2–3 times daily or

25 mg at night increased to 25 mg twice daily if

necessary

Sedation section 4.1.1

Nausea and vomiting section 4.6



3 Respiratory system



Injection A1, chlorphenamine maleate 10 mg/mL,

net price 1-mL amp = £1.79



3.4.1 Antihistamines



156



3.4.2 Allergen immunotherapy



Phenergan® (Sanofi-Aventis)

Tablets, both blue, f/c, promethazine hydrochloride

10 mg, net price 56-tab pack = £2.85; 25 mg, 56-tab

pack = £4.34. Label: 2

Dental prescribing on NHS May be prescribed as

Promethazine Hydrochloride Tablets 10 mg or 25 mg



Elixir, golden, promethazine hydrochloride 5 mg/

5 mL. Net price 100 mL = £2.67. Label: 2

Excipients include sulfites

Electrolytes Na+ 1.6 mmol/5 mL

Dental prescribing on NHS May be prescribed as

Promethazine Hydrochloride Oral Solution 5 mg/5 mL



BNFC 2013–2014



NICE guidance

Pharmalgen ® for bee and wasp venom

allergy (February 2012)

Pharmalgen ® is an option for the treatment of IgEmediated bee and wasp venom allergy in those who

have had:

. a severe systemic reaction to bee or wasp venom;

. a moderate systemic reaction to bee or wasp venom

and who have a raised baseline serum-tryptase concentration, a high risk of future stings, or anxiety about

future stings.



Treatment with Pharmalgen ® should be initiated and

monitored in a specialist centre experienced in

venom immunotherapy.

www.nice.org.uk/TA246



3 Respiratory system



3.4.2 Allergen immunotherapy

Immunotherapy using allergen vaccines containing

house dust mite, animal dander (cat or dog), or extracts

of grass and tree pollen can improve symptoms of

asthma and allergic rhino-conjunctivitis in children. A

vaccine containing extracts of wasp and bee venom is

used to reduce the risk of severe anaphylaxis and systemic reactions in children with hypersensitivity to wasp

and bee stings. An oral preparation of grass pollen

extract (Grazax ®) is also licensed for grass pollen

induced rhinitis and conjunctivitis. Children requiring

immunotherapy must be referred to a hospital specialist

for accurate allergy diagnosis, assessment, and treatment.

In view of concerns about the safety of desensitising

vaccines, it is recommended that they are used by

specialists and only for the following indications:

. seasonal allergic hay fever (caused by pollen) that has

not responded to anti-allergic drugs;



. hypersensitivity to wasp and bee venoms.

Desensitising vaccines should generally be avoided

or used with particular care in children with asthma.

Desensitising vaccines should be avoided in pregnant

women, in children under 5 years, and in those taking

beta-blockers (adrenaline will be ineffective if a hypersensitivity reaction occurs), or ACE inhibitors (risk of

severe anaphylactoid reactions).

Hypersensitivity reactions to immunotherapy (especially to wasp and bee venom extracts) can be lifethreatening; bronchospasm usually develops within 1

hour and anaphylaxis within 30 minutes of injection.

Therefore, facilities for cardiopulmonary resuscitation

must be immediately available and the child needs to be

monitored for at least 1 hour after injection. If symptoms or signs of hypersensitivity develop (e.g. rash,

urticaria, bronchospasm, faintness), even when mild,

the child should be observed until these have resolved

completely. The first dose of oral grass pollen extract

(Grazax ®) should be taken under medical supervision

and the child should be monitored for 20–30 minutes.

For details on the management of anaphylaxis, see

section 3.4.3.

Each set of allergen extracts usually contains vials for

the administration of graded amounts of allergen. Maintenance sets containing vials at the highest strength are

also available. Product literature must be consulted for

details of allergens, vial strengths, and administration.



BEE AND WASP ALLERGEN

EXTRACTS

Cautions see notes above and consult product literature

Contra-indications see notes above and consult

product literature

Pregnancy avoid

Side-effects consult product literature

Indications and dose

Hypersensitivity to wasp or bee venom (see notes

above)

. By subcutaneous injection

Consult product literature

Pharmalgen® (ALK-Abello´) A

Bee venom extract (Apis mellifera) or wasp venom

extract (Vespula spp.). Net price initial treatment set

= £54.81 (bee), £67.20 (wasp); maintenance treatment set = £63.76 (bee), £82.03 (wasp)



GRASS AND TREE POLLEN

EXTRACTS

Cautions see notes above and consult product literature

Contra-indications see notes above and consult

product literature

Pregnancy consult product literature

Side-effects consult product literature

Indications and dose

Treatment of seasonal allergic hay fever due to

grass or tree pollen (see notes above)

See under preparations, below

Pollinex® (Allergy) A

Grasses and rye or tree pollen extract, net price

initial treatment set (3 vials) and extension course

treatment (1 vial) = £450.00

Dose

. By subcutaneous injection

Consult product literature



Grass pollen extract

Grazax® (ALK-Abello´) A

Oral lyophilisates (= freeze-dried tablets), grass

pollen extract 75 000 units, net price 30-tab pack =

£66.56. Counselling, administration



BNFC 2013–2014

Dose

. By mouth

Child 5–18 years 1 tablet daily; start treatment at least 4

months before start of pollen season and continue for up

to 3 years

Counselling Tablets should be placed under the tongue and

allowed to disperse. Advise carer and child that child not to

swallow for 1 minute, or eat or drink for 5 minutes, after

taking the tablet



Omalizumab

Omalizumab is a monoclonal antibody that binds to

immunoglobulin E (IgE). It is licensed for use as additional therapy in children over 6 years with proven IgEmediated sensitivity to inhaled allergens, whose severe

persistent allergic asthma cannot be controlled adequately with high-dose inhaled corticosteroid together

with a long-acting beta2 agonist. Omalizumab should be

initiated by physicians experienced in the treatment of

severe persistent asthma.



For details on the management of anaphylaxis, see

section 3.4.3.

The Scottish Medicines Consortium, p. 3 has advised (May

2011) that omalizumab is accepted for restricted use

within NHS Scotland as add-on therapy to improve

asthma control in children (6 to 12 years), adolescents,

and adults with severe persistent allergic asthma. Omalizumab is restricted to patients who are prescribed

chronic systemic corticosteroids and in whom all

other treatments have failed. The response should be

assessed at 16 weeks and omalizumab treatment discontinued in patients who have not shown a marked

improvement in overall asthma control.



NICE guidance

Omalizumab for severe persistent allergic

asthma (April 2013)

Omalizumab is recommended as an option for treating severe persistent confirmed allergic IgEmediated asthma as an add-on to optimised standard

therapy in children aged 6 years and over

. who need continuous or frequent treatment with oral

.



corticosteroids (defined as 4 or more courses in the

previous year), and

only if the manufacturer makes omalizumab available

with the discount agreed in the patient access scheme.



Optimised standard therapy is defined as a full trial

of and, if tolerated, documented compliance with

inhaled high-dose corticosteroids, long-acting beta2

agonists, leukotriene receptor antagonists, theophyllines, oral corticosteroids, and smoking cessation if

clinically appropriate.

Children currently receiving omalizumab whose disease does not meet the criteria should be able to

continue treatment until they and their clinician

consider it appropriate to stop.

www.nice.org.uk/TA278



157



OMALIZUMAB

Cautions autoimmune disease; susceptibility to helminth infections—discontinue if infection does not

respond to anthelmintic

Hepatic impairment manufacturer advises caution—

no information available

Renal impairment manufacturer advises caution—no

information available

Pregnancy manufacturer advises avoid unless essential; no evidence of teratogenicity in animal studies

Breast-feeding manufacturer advises avoid—present

in milk in animal studies

Side-effects abdominal pain, headache, pyrexia; less

commonly dyspepsia, nausea, diarrhoea, weight gain,

postural hypotension, flushing, pharyngitis, bronchospasm, cough, syncope, paraesthesia, dizziness,

drowsiness, malaise, influenza-like illness, photosensitivity, urticaria, rash, pruritus; rarely laryngoedema, parasitic infection, antibody formation; also

reported arterial thromboembolic events, ChurgStrauss syndrome (see notes above), thrombocytopenia, arthralgia, myalgia, joint swelling, alopecia,

serum sickness (including fever and lymphadenopathy)

Indications and dose

Prophylaxis of severe persistent allergic asthma

(see notes above)

. By subcutaneous injection

Child 6–18 years according to immunoglobulin E

concentration and body-weight, consult product

literature

Xolair® (Novartis) A

Injection, omalizumab 150 mg/mL, net price 0.5-mL

(75-mg) prefilled syringe = £128.07; 1-mL (150-mg)

prefilled syringe = £256.15



3.4.3 Allergic emergencies

Adrenaline (epinephrine) provides physiological

reversal of the immediate symptoms associated with

hypersensitivity reactions such as anaphylaxis and

angioedema.



Anaphylaxis

Anaphylaxis is a severe, life-threatening, generalised or

systemic hypersensitivity reaction. It is characterised by

the rapid onset of respiratory and/or circulatory problems and is usually associated with skin and mucosal

changes; prompt treatment is required. Children with

pre-existing asthma, especially poorly controlled

asthma, are at particular risk of life-threatening reactions. Insect stings are a recognised risk (in particular

wasp and bee stings). Latex and certain foods, including

eggs, fish, cows’ milk protein, peanuts, sesame, shellfish,

soy, and tree nuts may also precipitate anaphylaxis.

Medicinal products particularly associated with anaphylaxis include blood products, vaccines, allergen immunotherapy preparations, antibacterials, aspirin and other

NSAIDs, and neuromuscular blocking drugs. In the case



3 Respiratory system



Churg-Strauss syndrome has occurred rarely in patients

given omalizumab; the reaction is usually associated

with the reduction or withdrawal of oral corticosteroid

therapy. Churg-Strauss syndrome can present as

eosinophilia, vasculitic rash, cardiac complications,

worsening pulmonary symptoms, or peripheral neuropathy. Hypersensitivity reactions can also occur immediately following treatment with omalizumab or sometimes more than 24 hours after the first injection.



3.4.3 Allergic emergencies



158



3.4.3 Allergic emergencies



of drugs, anaphylaxis is more likely after parenteral

administration; resuscitation facilities must always be

available when giving injections associated with special

risk. Refined arachis (peanut) oil, which may be present

in some medicinal products, is unlikely to cause an

allergic reaction—nevertheless it is wise to check the

full formula of preparations which may contain allergens.



Intramuscular adrenaline (epinephrine)



Treatment of anaphylaxis



Children with severe allergy, and their carers, should

ideally be instructed in the self-administration of adrenaline by intramuscular injection (for details see Selfadministration of Adrenaline (Epinephrine), p. 159).



First-line treatment includes:

.



.



3 Respiratory system



BNFC 2013–2014



securing the airway, restoration of blood pressure

(laying the child flat and raising the legs, or in the

recovery position if unconscious or nauseous and at

risk of vomiting);

administering adrenaline (epinephrine) by intramuscular injection (for doses see Intramuscular

Adrenaline, below); the dose should be repeated if

necessary at 5-minute intervals according to blood

pressure, pulse, and respiratory function [important: possible need for intravenous route using dilute

solution (Adrenaline 1 in 10 000), see Intravenous

Adrenaline below];



.



administering high-flow oxygen (section 3.6) and

intravenous fluids (section 9.2.2);



.



administering an antihistamine, such as chlorphenamine, (section 3.4.1) by slow intravenous injection or intramuscular injection as adjunctive treatment given after adrenaline. An intravenous

corticosteroid (section 6.3.2) such as hydrocortisone (preferably as sodium succinate) is of secondary value in the initial management of anaphylaxis

because the onset of action is delayed for several

hours, but should be given to prevent further deterioration in severely affected children.



Continuing respiratory deterioration requires further treatment with bronchodilators including inhaled or intravenous salbutamol (see p. 137), inhaled ipratropium (see

p. 140), intravenous aminophylline (see p. 141), or intravenous magnesium sulfate [unlicensed indication] (see

Management of Acute Asthma, p. 132). In addition to

oxygen, assisted respiration and possibly emergency

tracheotomy may be necessary.

When a child is so ill that there is doubt as to the

adequacy of the circulation, the initial injection of adrenaline may need to be given as a dilute solution by the

intravenous route, or by the intraosseous route if venous

access is difficult—for details of cautions, dose and

strength, see under Intravenous Adrenaline (Epinephrine), below.

On discharge, the child should be considered for further

treatment with an oral antihistamine (section 3.4.1) and

an oral corticosteroid (section 6.3.2) for up to 3 days to

reduce the risk of further reaction. The child, or carer,

should be instructed to return to hospital if symptoms

recur and to contact their general practitioner for follow-up.

Children who are suspected of having had an anaphylactic reaction should be referred to a specialist for

specific allergy diagnosis. Avoidance of the allergen is

the principal treatment; if appropriate, an adrenaline

auto-injector should be given or a replacement supplied

(see Self-administration of Adrenaline, p. 159).



The intramuscular route is the first choice route for the

administration of adrenaline in the management of

anaphylaxis. Adrenaline is best given as an intramuscular injection into the anterolateral aspect of the middle third of the thigh, it has a rapid onset of action after

intramuscular administration and in the shocked patient

its absorption from the intramuscular site is faster and

more reliable than from the subcutaneous site.



Prompt injection of adrenaline is of paramount importance. The following adrenaline doses are recommended for the emergency treatment of anaphylaxis

by appropriately trained healthcare professionals, and

are based on the revised recommendations of the Working Group of the Resuscitation Council (UK).



Dose of intramuscular injection of

adrenaline (epinephrine) for the

emergency treatment of anaphylaxis by

healthcare professionals

Age range



Dose



Volume of

adrenaline

1 in 1000

(1 mg/mL)



Under 6 years

6–12 years



150 micrograms

300 micrograms



0.15 mL1

0.3 mL



12–18 years



500 micrograms



0.5 mL2



These doses may be repeated several times if

necessary at 5-minute intervals according to blood

pressure, pulse, and respiratory function.

1. Use suitable syringe for measuring small volume

2. 300 micrograms (0.3 mL) if child is small or prepubertal



Intravenous adrenaline (epinephrine)

Intravenous adrenaline should be given only by those

experienced in its use, in a setting where patients can be

carefully monitored.

Where the child is severely ill and there is real doubt

about adequacy of the circulation and absorption from

the intramuscular injection site, adrenaline may be

given by slow intravenous injection. Children may

respond to as little as 1 microgram/kg (0.01 mL/kg) of

the dilute 1 in 10 000 adrenaline injection by slow

intravenous injection repeated according to response. A

single dose of adrenaline by intravenous injection

should not exceed 50 micrograms; if multiple doses

are required consider giving adrenaline by slow intravenous infusion. Great vigilance is needed to ensure that

the correct strength of adrenaline injection is used; anaphylactic shock kits need to make a very clear distinction

between the 1 in 10 000 strength and the 1 in 1000

strength. It is also important that, where intramuscular

injection might still succeed, time should not be wasted

seeking intravenous access.

For reference to the use of the intravenous route for

acute hypotension, see section 2.7.2.



BNFC 2013–2014



3.4.3 Allergic emergencies



Croup (section 3.1)

. By inhalation of nebulised solution of adrenaline

1 in 1000 (1 mg/mL)

Child 1 month–12 years 400 micrograms/kg

(max. 5 mg), repeated after 30 minutes if necessary



Self-administration of adrenaline

(epinephrine)

Children at considerable risk of anaphylaxis need to

carry (or have available) adrenaline at all times and

the child, or child’s carers, need to be instructed in

advance when and how to inject it. Packs for selfadministration need to be clearly labelled with

instructions on how to administer adrenaline (intramuscularly, preferably at the midpoint of the outer

thigh, through light clothing if necessary). It is important

to ensure that an adequate supply is provided to treat

symptoms until medical assistance is available.

Adrenaline for administration by intramuscular injection

is available in ‘auto-injectors’ (e.g. Anapen ®, EpiPen ® or

Jext ®), pre-assembled syringes fitted with a needle

suitable for very rapid administration (if necessary by

a bystander or a healthcare provider if it is the only

preparation available); injection technique is device

specific.

For doses of adrenaline for self-administration, see

individual preparations under Adrenaline/Epinephrine

(Intramuscular Injection for Self-Administration, below).



159



Administration For nebulisation, dilute adrenaline 1 in

1000 solution with sterile sodium chloride 0.9% solution



Acute hypotension, low cardiac output section

2.7.2

Cardiopulmonary resuscitation section 2.7.3

Intramuscular or subcutaneous

Adrenaline/Epinephrine 1 in 1000 (Nonproprietary) A

Injection, adrenaline (as acid tartrate) 1 mg/mL, net

price 0.5-mL amp = 52p; 1-mL amp = 57p



1



Excipients may include sulfites

1



Minijet® Adrenaline 1 in 1000 (UCB Pharma) A

Injection, adrenaline (as hydrochloride) 1 in 1000

(1 mg/mL). Net price 1 mL (with 25 gauge 6 0.25

inch needle for subcutaneous injection) = £10.79,

1 mL (with 21 gauge 6 1.5 inch needle for intramuscular injection) = £6.36 (both disposable syringes)

Excipients include sulfites



Cautions for cautions in non-life-threatening situations, see section 2.7.2

Interactions Severe anaphylaxis in children taking betablockers may not respond to adrenaline—consider

bronchodilator therapy, see intravenous salbutamol (section

3.1.1.1); furthermore, adrenaline may cause severe

hypertension and bradycardia in those receiving noncardioselective beta-blockers. Other interactions, see

Appendix 1 (sympathomimetics).



Renal impairment section 2.7.2

Pregnancy section 2.7.2

Breast-feeding section 2.7.2

Side-effects section 2.7.2

Licensed use auto-injector delivering 150-microgram

dose of adrenaline not licensed for use in children

body-weight under 15 kg

Indications and dose

Acute anaphylaxis

. By intramuscular injection (preferably midpoint

in anterolateral thigh) of 1 in 1000 (1 mg/mL)

solution for administration by healthcare professionals

See notes and table above

. By intramuscular injection for self-administration

See under preparations

Acute anaphylaxis when there is doubt as to the

adequacy of the circulation

. By slow intravenous injection of 1 in 10 000

(100 micrograms/mL) solution (extreme caution—specialist use only)

See notes above



Safe Practice

Intravenous route should be used with extreme care

by specialists only, see notes above



Intravenous

Extreme caution, see notes above

Adrenaline/Epinephrine 1 in 10 000, Dilute (Nonproprietary) A

Injection, adrenaline (as acid tartrate) 100 micrograms/mL, 10-mL amp, 1-mL and 10-mL prefilled

syringe

Excipients may include sulfites



Minijet® Adrenaline 1 in 10 000 (UCB Pharma) A

Injection, adrenaline (as hydrochloride) 1 in 10 000

(100 micrograms/mL), net price 3-mL prefilled

syringe = £6.27; 10-mL prefilled syringe = £6.15

Excipients include sulfites



Intramuscular injection for self-administration

Note Injection technique is device specific. To ensure

patients receive the auto-injector device that they have been

trained to use, prescribers should specify the brand to be

dispensed.



Anapen® (Lincoln Medical) A

Anapen® 150 (delivering a single dose of adrenaline

150 micrograms), adrenaline 500 micrograms/mL (1

in 2000), net price 1.05-mL auto-injector device =

£30.67

Excipients include sulfites

Note 0.75 mL of the solution remains in the auto-injector

device after use

Dose



Acute anaphylaxis

. By intramuscular injection

Child body-weight under 15 kg 150 micrograms

repeated after 10–15 minutes as necessary

Child body-weight 15–30 kg 150 micrograms (but on the

basis of a dose of 10 micrograms/kg, 300 micrograms

may be more appropriate for some children) repeated

after 10–15 minutes as necessary

1. A restriction does not apply to the intramuscular

administration of up to 1 mg of adrenaline injection 1 in

1000 (1 mg/mL) for the emergency treatment of anaphylaxis



3 Respiratory system



ADRENALINE/EPINEPHRINE



160



3.4.3 Allergic emergencies



1

Anapen® 300 (delivering a single dose of adrenaline 300 micrograms), adrenaline 1 mg/mL (1 in

1000), net price 1.05-mL auto-injector device =

£30.67



BNFC 2013–2014

Dose



Acute anaphylaxis

. By intramuscular injection

Child body-weight under 15 kg 150 micrograms

repeated after 5–15 minutes as necessary

Child body-weight 15–30 kg 150 micrograms (but on the

basis of a dose of 10 micrograms/kg, 300 micrograms

may be more appropriate for some children) repeated

after 5–15 minutes as necessary



Excipients include sulfites

Note 0.75 mL of the solution remains in the auto-injector

device after use

Dose



Acute anaphylaxis

. By intramuscular injection

Child body-weight over 30 kg 300 micrograms repeated

after 10–15 minutes as necessary



3 Respiratory system



Anapen® 500 (delivering a single dose of adrenaline

500 micrograms), adrenaline 1.7 mg/mL, net price

1.05-mL auto-injector device = £30.67

Excipients include sulfites

Note 0.75 mL of the solution remains in the auto-injector

device after use

Dose



Acute anaphylaxis

. By intramuscular injection



Jext® 300 micrograms (delivering a single dose of

adrenaline (as tartrate) 300 micrograms), adrenaline

1 mg/mL (1 in 1000), net price 1.4-mL auto-injector

device = £28.77



1



Excipients include sulfites

Note 1.1 mL of the solution remains in the auto-injector

device after use

Dose



Acute anaphylaxis

. By intramuscular injection

Child body-weight over 30 kg 300 micrograms repeated

after 5–15 minutes as necessary



Child 12–18 years body-weight over 60 kg 500 micrograms repeated after 10–15 minutes if necessary



Angioedema

EpiPen® (Meda) A

EpiPen® Jr Auto-injector 0.15 mg (delivering a single

dose of adrenaline 150 micrograms), adrenaline

500 micrograms/mL (1 in 2000), net price 2-mL

auto-injector device = £26.45, 2 6 2-mL auto-injector device = £52.90

Excipients include sulfites

Note 1.7 mL of the solution remains in the auto-injector

device after use

Dose



Acute anaphylaxis

. By intramuscular injection

Child body-weight under 15 kg 150 micrograms

repeated after 5–15 minutes as necessary

Child body-weight 15–30 kg 150 micrograms (but on the

basis of a dose of 10 micrograms/kg, 300 micrograms

may be more appropriate for some children) repeated

after 5–15 minutes as necessary



EpiPen® Auto-injector 0.3 mg (delivering a single

dose of adrenaline 300 micrograms), adrenaline

1 mg/mL (1 in 1000), net price 2-mL auto-injector

device = £26.45, 2 6 2-mL auto-injector device =

£52.90



1



Excipients include sulfites

Note 1.7 mL of the solution remains in the auto-injector

device after use

Dose



Acute anaphylaxis

. By intramuscular injection

Child body-weight over 30 kg 300 micrograms repeated

after 5–15 minutes as necessary



Jext® (ALK-Abello´) A

1

Jext® 150 micrograms (delivering a single dose of

adrenaline (as tartrate) 150 micrograms), adrenaline

1 mg/mL (1 in 1000), net price 1.4-mL auto-injector

device = £28.77

Excipients include sulfites

Note 1.25 mL of the solution remains in the auto-injector

device after use

1. A restriction does not apply to the intramuscular

administration of up to 1 mg of adrenaline injection 1 in

1000 (1 mg/mL) for the emergency treatment of anaphylaxis



Angioedema is dangerous if laryngeal oedema is present.

In this circumstance adrenaline (epinephrine) injection

and oxygen should be given as described under

Anaphylaxis (see above); antihistamines and corticosteroids should also be given (see again above). Tracheal

intubation may be necessary. In some children with

laryngeal oedema, adrenaline 1 in 1000 (1 mg/mL)

solution may be given by nebuliser. However, nebulised

adrenaline cannot be relied upon for a systemic effect—

intramuscular adrenaline should be used.



Hereditary



angioedema The treatment of

hereditary angioedema should be under specialist

supervision. Unlike allergic angioedema, adrenaline,

corticosteroids, and antihistamines should not be used

for the treatment of acute attacks, including attacks

involving laryngeal oedema, as they are ineffective

and may delay appropriate treatment—intubation may

be necessary. The administration of C1-esterase inhibitor (in fresh frozen plasma or in partially purified

form) can terminate acute attacks of hereditary angioedema; it can also be used for short-term prophylaxis

before dental, medical, or surgical procedures. Tranexamic acid (section 2.11) is used for short-term or longterm prophylaxis of hereditary angioedema; short-term

prophylaxis is started several days before planned procedures which may trigger an acute attack of hereditary

angioedema (e.g. dental work) and continued for 2–5

days afterwards. Danazol [unlicensed indication, see

BNF section 6.7.2] is best avoided in children because

of its androgenic effects, but it can be used for shortterm prophylaxis of hereditary angioedema.



C1-ESTERASE INHIBITOR

C1-esterase inhibitor is prepared from human plasma



Cautions vaccination against hepatitis A (p. 608) and

hepatitis B (p. 610) may be required

Pregnancy manufacturer advises avoid unless essential

Side-effects thrombosis (with high doses), headache,

fever

Licensed use Berinert ® not licensed for short-term

prophylaxis of hereditary angioedema



BNFC 2013–2014



3.5 Respiratory stimulants and pulmonary surfactants



Indications and dose

See preparations

Berinert® (CSL Behring) A

Injection, powder for reconstitution, C1-esterase

inhibitor, net price 500-unit vial (with solvent) =

£550.00

Electrolytes Na+ approx. 2.1 mmol/vial

Dose



Acute attacks of hereditary angioedema, shortterm prophylaxis of hereditary angioedema

before surgery or dental procedures (specialist use

only)



. By slow intravenous injection or intravenous infusion

Neonate 20 units/kg

Child 1 month–18 years 20 units/kg



Cinryze® (ViroPharma) TA

Injection, powder for reconstitution, C1-esterase

inhibitor, net price 500-unit vial (with solvent) =

£668.00.

Electrolytes Na+ approx. 0.5 mmol/vial

Dose



Acute attacks of hereditary angioedema (specialist

use only)



. By slow intravenous injection

Child 12–18 years 1000 units as a single dose; dose may

be repeated if necessary



Short-term prophylaxis of hereditary angioedema

before dental, medical, or surgical procedures



Long-term prophylaxis of severe, recurrent

attacks of hereditary angioedema where acute

treatment is inadequate, or when oral prophylaxis

is inadequate or not tolerated (specialist use only)

. By slow intravenous injection

Child 12–18 years 1000 units every 3–4 days, interval

between doses adjusted according to response

Administration for slow intravenous injection, reconstitute

(with solvent provided) to a concentration of 100 units/

mL; give at a rate of 1 mL/minute



3.5



Respiratory stimulants

and pulmonary

surfactants



orally. The therapeutic range for plasma-caffeine concentration is usually 10–20 mg/litre (50–100 micromol/

litre), but a concentration of 25–35 mg/litre (130–

180 micromol/litre) may be required.



Safe practice

Some licensed preparations are labelled as caffeine

base rather than caffeine citrate. In 2013, there will

be a requirement for all preparations to be labelled

as caffeine citrate. To minimise confusion and the

risk of dosing errors during the changeover period,

always state dose in terms of caffeine citrate

when prescribing caffeine.

Caffeine citrate 2 mg : caffeine base 1 mg



CAFFEINE CITRATE

Cautions gastro-oesophageal reflux; cardiovascular

disease; monitor for recurrence of apnoea for 1 week

after stopping treatment

Side-effects hypertension, tachycardia, irritability,

restlessness, hypoglycaemia, hyperglycaemia, fluid

and electrolyte imbalance

Indications and dose

Neonatal apnoea

. By mouth or by intravenous infusion

Neonate initially 20 mg/kg either by intravenous

infusion over 30 minutes or by mouth, then 5 mg/kg

once daily either by intravenous infusion over 10

minutes or by mouth, starting 24 hours after the

initial dose; dose may be increased to 10 mg/kg

daily if necessary



Safe practice

When prescribing, always state dose in terms of

caffeine citrate

Caffeine citrate 2 mg : caffeine base 1 mg



Administration caffeine citrate injection may be

administered by mouth or by intravenous infusion

Caffeine citrate (Non-proprietary) A

Injection, caffeine citrate 10 mg/mL, net price 1-mL

amp = £4.89

Note Some stock packaged as caffeine base



Oral solution, caffeine citrate 10 mg/mL, net price

5-mL vial = £24.41

Note Some stock packaged as caffeine base



3.5.1 Respiratory stimulants

3.5.2 Pulmonary surfactants



Peyona® (Chiesi) A

Injection and oral solution, caffeine citrate 20 mg/

mL, net price 1-mL amp = £17.25



3.5.1 Respiratory stimulants

Respiratory stimulants (analeptic drugs), such as caffeine, reduce the frequency of neonatal apnoea, and the

need for mechanical ventilation during the first 7 days of

treatment. They are typically used in the management

of very preterm neonates, and continued until a postmenstrual age of 34 to 35 weeks is reached (or longer if

necessary). They should only be given under expert

supervision in hospital; it is important to rule out any

underlying disorder, such as seizures, hypoglycaemia,

or infection, causing respiratory exhaustion before starting treatment with a respiratory stimulant.

Caffeine citrate is licensed for the treatment of apnoea

in preterm neonates. It is well absorbed when given



3.5.2 Pulmonary surfactants

Pulmonary surfactants derived from animal lungs,

beractant and poractant alfa are used to prevent and

treat respiratory distress syndrome (hyaline membrane

disease) in neonates and preterm neonates. Prophylactic use of a pulmonary surfactant may reduce the need

for mechanical ventilation and is more effective than

‘rescue treatment’ in preterm neonates of 29 weeks or

less postmenstrual age.

Pulmonary surfactants may also be of benefit in neonates with meconium aspiration syndrome or intrapartum streptococcal infection.



3 Respiratory system



(specialist use only)

. By slow intravenous injection

Child 12–18 years 1000 units up to 24 hours before

procedure



161



162



3.6 Oxygen



Pulmonary immaturity with surfactant deficit is the

commonest reason for respiratory failure in the neonate,

especially in those of less than 30 weeks post-menstrual

age. Betamethasone (section 6.3.2) given to the mother

(at least 12 hours but preferably 48 hours) before delivery substantially enhances pulmonary maturity in the

neonate.



BNFC 2013–2014

Curosurf® (Chiesi) A

Suspension, poractant alfa (porcine lung phospholipid fraction) 80 mg/mL, net price 1.5-mL vial =

£281.64; 3-mL vial = £547.40



3.6



Side-effects



Pulmonary surfactants have been

associated with intracranial haemorrhage. Bradycardia,

pulmonary haemorrhage, and decreased oxygen saturation have been reported rarely; hyperoxia and obstruction of the endotracheal tube by mucous secretions

have also been reported.



3 Respiratory system



BERACTANT

Cautions consult product literature

Side-effects see notes above

Indications and dose

Treatment of respiratory distress syndrome in

preterm neonates, birth-weight over 700 g (specialist use only)

. By endotracheal tube

Preterm neonate phospholipid 100 mg/kg

equivalent to a volume of 4 mL/kg, preferably

within 8 hours of birth; dose may be repeated

within 48 hours at intervals of at least 6 hours for

up to 4 doses

Prophylaxis of respiratory distress syndrome in

preterm neonates less than 32 weeks post-menstrual age (specialist use only)

. By endotracheal tube

Preterm neonate phospholipid 100 mg/kg

equivalent to a volume of 4 ml/kg, preferably

within 15 minutes of birth; dose may be repeated

within 48 hours at intervals of at least 6 hours for

up to 4 doses

Survanta® (AbbVie) A

Suspension, beractant (bovine lung extract) providing phospholipid 25 mg/mL, with lipids and proteins, net price 8-mL vial = £306.43



PORACTANT ALFA

Cautions consult product literature

Side-effects see notes above; also rarely hypotension

Indications and dose

Treatment of respiratory distress syndrome in

neonates, birth-weight over 700 g (specialist use

only)

. By endotracheal tube

Neonate 100–200 mg/kg; further doses of

100 mg/kg may be repeated at intervals of 12

hours; max. total dose 300–400 mg/kg

Prophylaxis of respiratory distress syndrome in

neonates 24–31 weeks post-menstrual age (specialist use only)

. By endotracheal tube

Preterm neonate 100–200 mg/kg soon after birth,

preferably within 15 minutes; further doses of

100 mg/kg may be repeated 6–12 hours later and

after a further 12 hours if still intubated; max. total

dose 300–400 mg/kg



Oxygen



Oxygen should be regarded as a drug. It is prescribed for

hypoxaemic patients to increase alveolar oxygen tension and decrease the work of breathing. The concentration of oxygen required depends on the condition

being treated; administration of an inappropriate concentration of oxygen may have serious or even fatal

consequences. High concentrations of oxygen can

cause pulmonary epithelial damage (bronchopulmonary

dysplasia), convulsions, and retinal damage, especially

in preterm neonates.

Oxygen is probably the most common drug used in

medical emergencies. It should be prescribed initially to

achieve a normal or near-normal oxygen saturation. In

most acutely ill children with an expected or known

normal or low arterial carbon dioxide (PaCO2), oxygen

saturation should be maintained above 92%; some

clinicians may aim for a target of 94–98%. In some

clinical situations, such as carbon monoxide poisoning,

(see also Emergency Treatment of Poisoning, p. 31), it is

more appropriate to aim for the highest possible oxygen

saturation until the child is stable. Hypercapnic respiratory failure is rare in children; in those children at risk,

a lower oxygen saturation target of 88–92% is indicated,

see below.

High concentration oxygen therapy is safe in uncomplicated cases of conditions such as pneumonia, pulmonary embolism, pulmonary fibrosis, shock, severe trauma, sepsis, or anaphylaxis. In such conditions, low

arterial oxygen (PaO2) is usually associated with low

or normal arterial carbon dioxide (PaCO2) and there is

little risk of hypoventilation and carbon dioxide retention.

In severe acute asthma, the arterial carbon dioxide

(PaCO2) is usually subnormal, but as asthma deteriorates

it may rise steeply. These patients usually require a high

concentration of oxygen and if the arterial carbon

dioxide (PaCO2) remains high despite treatment, intermittent positive pressure ventilation needs to be considered urgently.

Oxygen should not be given to neonates except under

expert supervision. Particular care is required in preterm

neonates because of the risk of hyperoxia (see above).

Low concentration oxygen therapy (controlled oxygen

therapy) is reserved for children at risk of hypercapnic

respiratory failure, which is more likely in children with:

.



advanced cystic fibrosis;



.



advanced non-cystic fibrosis bronchiectasis;



.



severe kyphoscoliosis

spondylitis;



.



severe lung scarring caused by tuberculosis;



.



musculoskeletal disorders with respiratory weakness, especially if on home ventilation;



.



an overdose of opioids, benzodiazepines, or other

drugs causing respiratory depression.



or



severe



ankylosing



Until blood gases can be measured, initial oxygen

should be given using a controlled concentration of



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