Perioperative Hypothermia Clinical Trial
Official title:
National Epidemiology Survey on the Incidence of Perioperative Hypothermia in Patients With Elective Surgery Under General Anesthesia in Turkey
Primary objective of the study is to project the incidence rate of perioperative hypothermia
under general anesthesia in patients who go under minimum 1 hour long elective surgery in at
least 25 hospitals/medical centers in Turkey .
Secondary objectives are to determine the patient risk factors associated with perioperative
hypothermia, to determine the surgery risk factors associated with perioperative
hypothermia, to determine the other risk factors associated with perioperative hypothermia,
intraoperative infusion volume and effect of warming, intraoperative irrigation volume and
effect of warming, intraoperative blood infusion volume and effect of warming, to determine
complications related to perioperative hypothermia, to improve patient temperature
management awareness and processes.
Mild hypothermia during perioperative period is very common, and the percentage accounts for
about half of all patients undergoing operations, which is directly related to the following
three major adverse events that significantly increase their risks: 1) cardiac
complications, 2) hemorrhage, 3) infection complications , particularly in patients with
high risk factors (ASA grade III, IV). Furthermore, the decrease in body temperature may
also lead to the following situations: 1) prolongation in retention time in post-anesthetic
ICU (PACU), 2) decrease in the thermal comfort for patients, and thus affecting the
satisfaction degree of patients and increasing cost.
From the viewpoint of patient safety, body surface temperature is only a vital sign.
Therefore, in order to prevent hypothermia during perioperative period, core temperature
monitoring must be carried out from the very beginning of the operation. The heat loss
during operations should be minimized. Active warming measurements should be taken for high
risk patients during the entire procedures of operations.
Although the literature have reported high incidence rate of hypothermia during
perioperative period of selective operations, there's no detailed information about
perioperative hypothermia prevalence in Turkey. Actually there are only a few studies about
patient warming effectiveness. A small scale study done by Kocaeli University in Turkey in
2013 shows the post operative hypothermia incidence as 45.7%. Another study and survey done
by Cerrahpasa Medicine Faculty shows even among healthcare professionals there is great
variance about the perception and results of hypothermia. Those facts drives investigators
to gather more clinical evidence about perioperative hypothermia.
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.
In order to further obtain information on the current status of temperature monitoring and
perioperative warming practice in most parts of the country, to project incidence rate of
perioperative hypothermia in most parts of the country, explore the relationship between
perioperative hypothermia and postoperative clinical outcome, and to provide evidence for
the improvement of perioperative body temperature management guidelines in accordance with
characteristics of the current Turkish healthcare status, investigators will conduct surveys
in department of anesthesiology over certain regions of Turkey to carry out a large scale
prospective study. In the study, investigators will search the incidence rate of
perioperative hypothermia in the surveyed areas, explore the causes of hypothermia, base on
which it is expected to enable to project perioperative hypothermia incidence rate, to
verify the effectiveness of perioperative hypothermia risk assessment questionnaire for
patients under general anesthesia, and to provide guidance and evidence for the clinical
practice of perioperative warming care.
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Time Perspective: Prospective
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