Speed of induction of anaesthesia is fast with which of the following anaesthetic agent and thus suitable for day care surgery
**Core Concept**
The question is testing the knowledge of the pharmacokinetics of anesthetic agents, specifically their onset of action. The underlying principle is that the speed of induction of anesthesia is influenced by the rate of absorption, distribution, and binding of the agent to its receptor site.
**Why the Correct Answer is Right**
The correct answer is a propofol, which has a fast onset of action due to its high lipid solubility. When administered intravenously, propofol is rapidly absorbed into the bloodstream and crosses the blood-brain barrier, allowing for a quick induction of anesthesia. This property makes propofol an ideal agent for day care surgery, where rapid recovery and minimal side effects are desired.
**Why Each Wrong Option is Incorrect**
**Option A:** Halothane is an inhalational anesthetic agent with a slow onset of action, making it less suitable for day care surgery.
**Option B:** Thiopentone has a fast onset of action, but its duration of action is shorter than propofol, requiring more frequent administration.
**Option C:** Ketamine has a slower onset of action compared to propofol and may cause more side effects, such as hallucinations and increased salivation.
**Clinical Pearl / High-Yield Fact**
Propofol is a suitable agent for day care surgery due to its rapid onset and short duration of action, allowing for quick recovery and minimal side effects.
**Correct Answer:** C. Propofol