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Infusion: Labetalol

Labetalol

Trade names:
Presentation and strength:
Trandate
5mg/ml in 20ml ampoules (100mg)
Cautions: see SAMF.
Cardiac failure & Acute myocardial infarct be cautious of eliciting cardiogenic shock
Caution when used with Calcium channel blockers
Do not mix with sodium bicarbonate
Caution with extravasation (good IV access) – tissue ischaemia & necrosis
Reduce BP NO MORE than 25% of MAP

Loading dose:
Adult: Slow IV 5 – 20 mg (1-4ml) over 2 minutes
Repeat bolus every 10 min till desired effect.
Suggest using 5mg/1ml doses

Paediatric:
See Infusion below

Commonly for 70kg adult: 
Neonatal:
As for paediatric.

Constant infusion:

Adult dosage range:
200mg (40ml) Labetalol to 160ml N/Saline (or 5% Dex) total 200ml (1mg/ml)
Rate 1-2ml/min (60-120ml/hr) = 1-2 mg/min

Paediatric dosage range: 
Neat Labetalol 5mg/ml at 1ml/hr = (5/weight) mg/kg/hr infusion
Range of 0.5 – 3 mg/kg/hr

Neonatal dosage range:
As for paediatric. 

Regime for 70kg adult:
Regime for paediatrics:
Mixture:
200mg Labetalol in 160ml N/Saline

Mixture:
Labetalol neat suggest using syringe driver with 10-20 ml Labetalol

Rate:
Run at 1ml/min (60-120ml/hr) 

Rate:
Run at 0.5 – 3 mg/kg/hr    

Alternative adult regime:
Alternative paediatric regime:
Mixture:
Mixture:
Rate:
Rate:
Additional notes:

Drugs mentioned

NeoHealth® ID 19432 · updated 9/15/2021