Narcotic of choice for out patient anesthesia:
**Core Concept**
The question requires knowledge of the pharmacological properties of different narcotic analgesics, specifically their potency, duration of action, and suitability for outpatient anesthesia.
**Why the Correct Answer is Right**
Codeine is not typically used for outpatient anesthesia due to its relatively low potency and short duration of action. However, Fentanyl is a potent opioid analgesic with a rapid onset and short duration of action, making it suitable for outpatient anesthesia. Fentanyl's pharmacokinetic profile allows for quick recovery and minimal residual sedation, which is ideal for outpatient procedures.
**Why Each Wrong Option is Incorrect**
**Option A:** Morphine is a potent opioid analgesic, but its longer duration of action and higher risk of respiratory depression make it less suitable for outpatient anesthesia.
**Option B:** Meperidine is an opioid analgesic with a unique pharmacological profile, but it is not typically used for outpatient anesthesia due to its potential for hepatotoxicity and interactions with other medications.
**Option C:** Alfentanil is a potent opioid analgesic with a rapid onset and short duration of action, similar to fentanyl. However, it is not as commonly used for outpatient anesthesia as fentanyl.
**Clinical Pearl / High-Yield Fact**
When selecting an opioid analgesic for outpatient anesthesia, consider the patient's medical history, the procedure's duration, and the desired level of post-procedure pain management. Fentanyl's rapid onset and short duration of action make it a popular choice for outpatient procedures.
**Correct Answer: D. Fentanyl**