Explanation
• Pentobarbital is a barbiturate used for coma induction (also called a "barb coma")
• Barbiturate comas are used to reduce the metabolic rate of brain tissue and cerebral blood flow, which helps decrease intracranial pressure
• Diazepam and lorazepam are benzodiazepines, not barbituates. Propofol is an anesthetic and is used for sedation, but not to induce a coma