Inhalational & Intravenous Anaesthetics · NEET PG Preparation Anaesthesia
A 45-year-old female is scheduled for a diagnostic curettage. The anesthesiologist chooses an intravenous induction agent that is known to increase c…
Practice question from Inhalational & Intravenous Anaesthetics (NEET PG Preparation Anaesthesia), with the correct answer and a step-by-step solution.
easy · MCQ · Q-BE4CA3
A 45-year-old female is scheduled for a diagnostic curettage. The anesthesiologist chooses an intravenous induction agent that is known to increase cerebral metabolic rate of oxygen (CMRO2), cerebral blood flow (CBF), and intracranial pressure (ICP), while also possessing amnestic, analgesic, and sympathomimetic properties. Which agent is this?
- A.Propofol
- B.Thiopental
- C.KetamineCorrect answer
- D.Etomidate
Solution
Ketamine is a phencyclidine derivative that acts as an NMDA receptor antagonist. It uniquely causes 'dissociative anesthesia' and stimulates the central nervous system sympathomimetic pathways, increasing heart rate, blood pressure, CMRO2, CBF, and ICP. All other listed options decrease CMRO2, CBF, and ICP.
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