Rectal drug administration

Published on 23/06/2015 by admin

Filed under Emergency Medicine

Last modified 23/06/2015

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23.12 Rectal drug administration

Background

Status epilepticus is a major paediatric medical emergency that requires emergency treatment. Although the first priority is airway and breathing, additional therapy includes termination of the seizure. Cannulating a peripheral vein in a child in status epilepticus limits timely delivery of essential advanced life support (ALS) drugs, especially in infants and toddlers. However, intravenous (IV), intramuscular (IM), or intraosseous drug administration is not necessary because rectal benzodiazepine administration is probably as effective and has no added complications. Rectal drug administration is a time-honoured drug-delivery technique in children and is useful for many medications, including antipyretics and anticonvulsants. The rectum is highly vascularised, and lipid-soluble drugs are rapidly absorbed when correctly administered (Fig. 23.12.1). Diazepam is a lipid-soluble benzodiazepine that is reliably absorbed through the rectum and will terminate most seizures without further treatment. Lorazepam is an effective alternative drug choice.

Rectal drug administration is a technique that allows delivery of an absorbable benzodiazepine in the setting of status epilepticus. The relative effectiveness and safety of rectal diazepam versus IM midazolam, lorazepam or other benzodiazepines for treatment of status epilepticus are not known. Rectal diazepam or lorazepam administration may take a few minutes longer to stop the seizure, compared to IV administration, and drug levels may be more variable. Occasionally, as with the IV diazepam preparation, more than one dose of rectal diazepam is necessary.

Equipment

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