Pharmacology The following statements regarding ketamine are true except: A It acts on the reticular activating system in the brain stem. B It produces dissociative anaesthesia. C It is useful agent in patients with hypovolemia. D Its use is contraindicated in pregnancy before term. 💡 Explanation The following statements regarding ketamine are true except: ✓ Correct Answer: A. It acts on the reticular activating system in the brain stem.