Ketamine duration of anesthesia is typically in which range?

Ketamine duration of anesthesia is typically in which range?

• A. 60-90 Min
• B. 10-20 Min
• C. 2-5 Min
• D. 30-60 Min

Answer: (B)

Ketamine’s anesthetic effect after a typical IV induction dose is relatively brief, around 10–20 minutes. This short duration comes from how the drug distributes quickly from the central compartment into tissues and is metabolized, so the core anesthetic window ends within that 10–20 minute range. For a standard induction dose (about 1–2 mg/kg IV), you get rapid onset, but the dissociative state and surgical anesthesia generally persist only for roughly 10–20 minutes, after which emergence begins. Longer durations (30–60 or 60–90 minutes) would require higher doses or maintenance infusions, not a single induction dose. It’s also worth noting that ketamine’s analgesic effects can last longer than the anesthetic state, but the usual single-dose duration for anesthesia is about 10–20 minutes.

Ketamine’s anesthetic effect after a typical IV induction dose is relatively brief, around 10–20 minutes. This short duration comes from how the drug distributes quickly from the central compartment into tissues and is metabolized, so the core anesthetic window ends within that 10–20 minute range. For a standard induction dose (about 1–2 mg/kg IV), you get rapid onset, but the dissociative state and surgical anesthesia generally persist only for roughly 10–20 minutes, after which emergence begins. Longer durations (30–60 or 60–90 minutes) would require higher doses or maintenance infusions, not a single induction dose. It’s also worth noting that ketamine’s analgesic effects can last longer than the anesthetic state, but the usual single-dose duration for anesthesia is about 10–20 minutes.