Inclusion Criteria:  50 American society of anesthesiologists- Physical status (ASA-PS) I and II patients, aged 60 to 80 years, 70-80 kg, both sexes, with intact hearing, undergoing elective day case surgery were included in the study.  Exclusion Criteria:  Uncooperative patients, Language barrier problems, Psychological disorders, Suspected difficult intubation, History of awareness under anesthesia, History of substance abuse, The inability to have tourniquet on arm for the IFT (e.g., lymphedema or operative site) Neuromuscular disorders. Advanced renal, hepatic, cardiac, respiratory or neurological dysfunction If rapid sequence induction was indicated (not suitable for inhalation induction).