<prompt> Preanaesthetic medication is used for all exceptDecrease anaesthetic doeDecrease blood pressurePrevents aspirationProduces amnesia for perioperative events  <response>: Complications of Anaesthesia During anaesthesia: Respiratory depression - Salivation, respiratory secretions Cardiac arrhythmias Fall in BP Delirium and convulsion Fire and explosion After anesthesia: Nausea and vomiting Nerve palsies Emergence delirium Cognitive defects 