Comparative Pharmacology
Head-to-head clinical analysis: ETHRANE versus KETAMINE HCL.
Peer-Reviewed Evidence
Head-to-head clinical analysis: ETHRANE versus KETAMINE HCL.
ETHRANE vs KETAMINE HCL
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Enflurane is a volatile inhalational anesthetic that potentiates GABA-A receptor activity and inhibits excitatory neurotransmission, resulting in general anesthesia.
Noncompetitive NMDA receptor antagonist; blocks glutamate binding, and modulates opioid receptors, monoaminergic receptors, and voltage-gated calcium channels.
1-5% inspired concentration via inhalation, titrated to effect for maintenance of general anesthesia.
Induction: 1-2 mg/kg IV; Maintenance: 0.5-1 mg/kg IV or 10-30 mcg/kg/min IV infusion; Subanesthetic: 0.1-0.5 mg/kg IV; Analgesic: IM 2-4 mg/kg; Intranasal 1-3 mg/kg. Frequency: single doses or continuous infusion per clinical need.
None Documented
None Documented
Context-sensitive half-life: approximately 2-5 minutes after short procedures; prolonged after prolonged administration due to slow washout from fat stores.
Terminal elimination half-life: 2–4 hours (alpha: 10–15 min, beta: 2.5–4 hr); prolonged in hepatic impairment and with repeated dosing (up to 12–24 hr for active metabolite norketamine).
Primarily exhaled unchanged via lungs (>95%); less than 5% metabolized in liver to fluoride ion and other metabolites, with renal excretion of metabolites.
Renal: 90% as metabolites (norketamine, dehydronorketamine, hydroxylated derivatives) and 4% unchanged; biliary/fecal: 3%; minor pulmonary exhalation.
Category C
Category C
General Anesthetic
General Anesthetic