Prescribing in Children
Principles of prescribing in children
– Prescribe by weight
– Body composition
– Body surface area
– Metabolism rate
– Off-licence use
Prepare to prescribe by knowing the following:
About the Child:
– Weight and age
– Surface area / Renal function
– Preferred route- PO, IV, INH, S/C etc
– Tolerability
(taste, ease of administration, timing)
About the drug:
– Formulations
– Strengths
– Side effects
– Interactions
– Pharmacokinetics
How to prescribe:
– Patient identifiers & Allergy box
– Mostly GENERIC (sometimes BRAND)
– Strength of formulation
– Allowed ‘g’ and ‘mg’ but spell other units such as ‘micrograms’
– Avoid decimals e.g. 500mg (not 0.5g)
– Liquids, mostly prescribe in mg (not ml)
– Antibiotics- have a review / stop date
– Appropriate timings, OD, BD etc
– Different sections for Stat, Regular, Infusions and PRN drugs
GENERAL TIPS:
– Learn by observing local practice
– Show prescription to seniors if unsure
– Do not blindly prescribe verbal order from seniors or nurses (double-check in BNFc)
– Local guidelines / BNFc/ Pharmacist
– Refer to clinic letters for latest dosages
– Check interactions if polytherapy
– Is the mg/kg each dose or daily dose
– Know the maximum dose
– Ensure not duplicated on PRN