Therapeutic Classification: general anesthetics
Absorption: IV administration results in complete bioavailability.
Distribution: Rapidly and widely distributed. Crosses the blood-brain barrier well; rapidly redistributed to other tissues.
Protein Binding: 9599%.
Metabolism/Excretion: Rapidly metabolized by the liver. Primarily excreted in urine as metabolites.
Half-life: 312 hr (blood-brain equilibration half-life 2.9 min).
(loss of consciousness)
Time to recovery is 8 min (up to 19 min if opioid analgesics have been used).
CV: bradycardia, hypotension, hypertension.
Derm: flushing.
GI: abdominal cramping, hiccups, nausea, vomiting.
GU: discoloration of urine (green).
Local: burning, pain, stinging, coldness, numbness, tingling at IV site.
MS: involuntary muscle movements, perioperative myoclonia.
Neuro: dizziness, headache.
Resp: apnea, cough.
Misc: fever, PROPOFOL INFUSION SYNDROME.
General Anesthesia
- IV (Adults <55 yr): Induction: 40 mg every 10 sec until induction achieved (22.5 mg/kg total). Maintenance: 100200 mcg/kg/min. Rates of 150200 mcg/kg/min are usually required during first 1015 min after induction, then ↓ by 3050% during first 30 min of maintenance. Rates of 50100 mcg/kg/min are associated with optimal recovery time. May also be given intermittently in increments of 2550 mg.
- IV (Geriatric Patients , Cardiac Patients, Debilitated Patients, or Hypovolemic Patients): Induction: 20 mg every 10 sec until induction achieved (11.5 mg/kg total). Maintenance: 50100 mcg/kg/min (dose in cardiac anesthesia ranges from 50150 mcg/kg/min depending on concurrent use of opioid).
- IV (Adults Undergoing Neurosurgical Procedures): Induction: 20 mg every 10 sec until induction achieved (12 mg/kg total). Maintenance: 100200 mcg/kg/min.
- IV (Children 3 yr16 yr): Induction: 2.53.5 mg/kg, use lower dose for children ASA III or IV.
- IV (Children 2 mo16 yr): Maintenance: 125300 mcg/kg/min (following first 30 min of maintenance, rate should be ↓ if possible), younger children may require larger infusion rates compared to older children.
Monitored Anesthesia Care Sedation
- IV (Adults <55 yr): Initiation: 100150 mcg/kg/min infusion or 0.5 mg/kg as slow injection. Maintenance: 2575 mcg/kg/min infusion or incremental boluses of 1020 mg.
- IV (Geriatric Patients , Debilitated Patients, or ASA III/IV Patients): Initiation: Use slower infusion or injection rates. Maintenance: 20% less than the usual adult infusion dose; rapid/repeated bolus dosing should be avoided.
ICU Sedation
- IV (Adults): 5 mcg/kg/min for a minimum of 5 min. Additional increments of 510 mcg/kg/min over 510 min may be given until desired response is obtained. (Range 550 mcg/kg/min.) Dose should be reassessed every 24 hr.