The Effect of Circadian Rhytm in Patients Undergoing Spinal Anesthesia.

Objective: The circadian rhythm is the most important of the main rhythms that affect our daily lives and has a significant role in the efficiency of a lot of drugs used in anesthesia. The aim of this study is to prove whether circadian rythm has an effect on spinal anesthesia and, if any, its effect on postoperative analgesic request by retrospectively studying the patients operated under spinal anesthesia.

Methods: We conducted the study on patients operated on inguinal hernia and anorectal surgery under spinal anesthesia in general surgery room.