Intravenous Anaesthetic Agent
Pregnancy: B
Propofol (TCI / TIVA)
Brand names: Diprivan, Propofol 1%, Propofol 2%
Adult dose
Dose: Induction: 100–200 mg IV (1.5–2.5 mg/kg); TIVA maintenance: 4–12 mg/kg/h; ICU sedation: 0.3–4 mg/kg/h
Route: intravenous infusion or bolus
Frequency: continuous infusion (TIVA/sedation) or titrated bolus
Max: 6 mg/kg/h (ICU sedation — avoid >4 mg/kg/h beyond 72h due to PRIS risk)
Propofol infusion syndrome (PRIS): rare but fatal — high dose (>4 mg/kg/h) >72h in ICU with metabolic acidosis, rhabdomyolysis, cardiac failure; monitor CK and lactate
Paediatric dose
Dose: 2.5 mg/kg
Route: IV slow injection
Frequency: induction — single dose
Max: Titrated to response
Concentration: 10 mg/mL (1%); 20 mg/mL (2%) mg/ml
ICU sedation: NOT licensed <16 years — risk of PRIS reported in paediatric ICU; induction use for children ≥1 month is licensed
Dose adjustments
Renal
No dose adjustment required
Hepatic
No dose adjustment required
Paediatric weight-based calculator
ICU sedation: NOT licensed <16 years — risk of PRIS reported in paediatric ICU; induction use for children ≥1 month is licensed
Clinical pearls
- PRIS: monitor CK, lactate, TGs if >4 mg/kg/h beyond 48h; switch to alternative if metabolic acidosis develops
- TCI (Target Controlled Infusion): Marsh or Schnider models — Marsh preferred for obese; weight-based
- Lipid emulsion: provides 1.1 kcal/mL — subtract from nutritional calculations in ICU patients receiving high-dose infusions
Contraindications
- ICU sedation in children <16 years (PRIS risk)
- Soy/egg allergy (lipid emulsion)
- Mitochondrial disease (PRIS risk)
Side effects
- Pain on injection (lidocaine pre-treatment reduces)
- Hypotension
- Apnoea
- PRIS (high dose/prolonged ICU use)
- Green urine (benign)
- Hyperlipidaemia (monitor triglycerides)
Interactions
- CNS depressants (enhanced sedation)
- Fentanyl (synergistic — reduce doses)
- Neuromuscular blocking agents (no interaction)
Monitoring
- Lactate (PRIS screen)
- CK (PRIS screen)
- Triglycerides (if >48h or obese)
- Blood pressure
- Sedation score
Reference: BNFc; BNF 86; PRIS case series; RCoA guidelines; SPC Diprivan. Verify against your local formulary and the latest BNF before prescribing.
Related
Curated clinical cross-links plus same-class fallbacks.
Calculators
- ASA Physical Status Classification · Pre-operative Risk
- Ramsay Sedation Scale · Sedation
- Local Anaesthetic Maximum Dose Calculator · Drug Dosing
- Apfel Score (Post-operative Nausea and Vomiting) · PONV
- Ramsay Sedation Scale · Sedation Assessment
- Apfel Score for Postoperative Nausea and Vomiting · Perioperative