<prompt> Drug used for post-operative shiveringAtropinePethidineThiopenoneSuxamethonium  <response>: Post-anaesthesia shivering PASPost anaesthesia postoperative shivering occurs in 40 of patients recovering from general anaesthesiaSometimes it is preceded by central hypothermia and peripheral vasoconstriction, indicating that it is a thermoregulatory mechanismPethidine is most effective drug for treatment of PASOther drugs used are-clonidine, doxapram, ketanserin, alfentanil, butorphanol, chlorpromazine.Refer: Morgan and Mikhails Clinical Anaesthesiology, 5th edition, pg no. 1264,1265 