What first onset and recovery?
A) Propofol
B) Thiopental
C) Ketamine
D) Etomidate
Answer (1)
The question pertains to the onset and recovery times of various anesthetic agents, which are important in clinical anesthesia for surgeries and other medical procedures. Let's look at each option provided:
A) Propofol : This is a commonly used intravenous anesthetic agent. Propofol has a rapid onset of action, typically within 30 seconds, and a short duration of action, which contributes to a quick recovery time. Patients generally experience minimal hangover effects, allowing for a smoother recovery process.
B) Thiopental : Thiopental is a barbiturate that acts as a rapid-onset anesthetic. Its effect generally begins within seconds, similar to propofol, but its recovery can be longer, especially with continued use, due to its accumulation in body tissues with repeated doses.
C) Ketamine : Ketamine is known for its unique mechanism of dissociative anesthesia. It has a slightly slower onset compared to propofol and thiopental, taking about 1 to 2 minutes when given intravenously. Recovery from ketamine can vary and is often characterized by emergence reactions, which might include vivid dreams or hallucinations.
D) Etomidate : This agent is used for its hemodynamic stability. It has a rapid onset like propofol and thiopental (typically within a minute). However, recovery from etomidate can be less smooth due to potential side effects, such as adrenal suppression and myoclonus.
In terms of the fastest onset and quickest recovery, propofol (Option A) is usually the preferred choice due to its rapid action and minimal lingering effects, making it very favorable for outpatient procedures.
