Which of the following was most likely the primary reason for the use of cisatracurium instead of tubocurarine in this patient?

Correct Answer: C

Rationale: The primary reason for using cisatracurium instead of tubocurarine in this patient is likely due to propofol induction, as cisatracurium is often preferred with propofol due to their compatibility. Liver or renal insufficiency or advanced age would not specifically dictate the choice between cisatracurium and tubocurarine. Diazepam administration is not directly related to the choice between these two neuromuscular blocking agents.

Correct Answer: A

Rationale: Diazepam has a long half-life, which reduces the risk of severe withdrawal symptoms compared to shorter-acting benzodiazepines like triazolam.

Correct Answer: A

Rationale: DES, a synthetic estrogen, causes deep vein thrombosis (choice A), feminization of male offspring (choice B), and miscarriages (choice C) in pregnancy, linked to historical congenital anomalies (e.g., vaginal adenocarcinoma). Virilization of female offspring (choice D) isn't reported; DES mimics estrogen, not androgens. This exception highlights its teratogenic risks, banning its use in pregnancy.

Correct Answer: B

Rationale: Vigabatrin inhibits GABA transaminase

Correct Answer: D

Rationale: Prostacyclin is a vasodilator, while others are vasoconstrictors.