D

Pin-point pupils with respiratory depression, hypotension and altered mental status constitute the classic triad of opioid/toxic narcotic overdose, fitting this patient’s presentation; anticholinergic Dhatura poisoning causes mydriasis, hypothermia alone does not give miosis, and pontine hemorrhage usually presents with hypertension, not hypotension. [Espinoza 2001 PMID 11383666; Whipple 1994 PMID 8038463]