<prompt> Post cardiac surgery delirium symptoms are worsened byAntipsychoticsAnticholinergicsBZDAntihistaminics  <response>: Ans. b. AnticholinergicsRef: Goodman Gilman 13th EP156Delirium is an acute change in cognition and attention characterized by alteration in consciousness and disorganized thinking.Since anticholinergics decrease cognition, delirium can be worsened by anticholinergics.Postoperative delirium is decreased by drugs likeAntipsychotics: HaloperidolDexmedetomidineBenzodiazepines: Midazolam 