Under the supervision of Turkish Anesthesiology and Reanimation Society and coordination of Prof Dr Hulya Bilgin from Uludag University Medicine Faculty Anesthesiology and Reanimation Clinic it is aimed to gather evidence about hypothermia prevalence patients who go under minimum 1 hour elective surgery under general anesthesia. So with the results of such a study it is aimed to improve the standard protocols regarding patient temperature management, patient warming management and also to avoid the complications and costs related to hypothermia.