Post-anesthesia recovery was significantly more rapid in Group A than in Group B , in terms of times to spontaneous breathing return ( @ @ min vs. @ @ min , P < @ ) , consciousness return ( @ @ min vs. @ @ min , P < @ ) , removal of tracheal intubation ( @ @ min vs. @ @ min , P < @ ) and operating room discharge ( @ @ min vs. @ @ min , P < @ ) .