Risk factors associated with post-operative nausea and vomiting following strabismus surgery’ are all except-
**Core Concept**
Post-operative nausea and vomiting (PONV) is a common complication following strabismus surgery, which is a type of ophthalmic surgery. The risk factors associated with PONV can be categorized into patient-related, surgery-related, and anesthetic-related factors.
**Why the Correct Answer is Right**
The correct answer is related to the fact that PONV is a multifactorial phenomenon. However, the question asks for risk factors associated with PONV following strabismus surgery. A key risk factor for PONV is female gender, as estrogen levels can affect the chemoreceptor trigger zone and the vomiting center in the brain. Additionally, a history of motion sickness or PONV, nonsmoking status, and younger age are also considered risk factors.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it is not a relevant risk factor for PONV following strabismus surgery.
**Option B:** This option is incorrect because it is not a relevant risk factor for PONV following strabismus surgery.
**Option C:** This option is incorrect because it is not a relevant risk factor for PONV following strabismus surgery.
**Clinical Pearl / High-Yield Fact**
A mnemonic to remember the risk factors for PONV is "FAMOUS": Female gender, Age (younger), Motion sickness, Anesthesia type (volatile anesthetics), and Smoking status (nonsmoker).
**Correct Answer:** D.