Effect of 10 Minute-prewarming on Core Body Temperature During Gynecologic Laparoscopic Surgery Under General Anesthesia

Daegu Catholic University Medical Center

Status: Completed

Conditions: Hypothermia; Anesthesia

Treatments: Device: Prewarming

Study type: Interventional

Funder types: Other

Identifiers

NCT04027842

CR-18-174

Details and patient eligibility

About

Previous research has shown beneficial effects of prewarming on preventing inadvertent perioperative hypothermia (IPH). Warming the surface of the body before the induction of anesthesia can reduce the temperature difference between the core and periphery, thereby reducing the degree of core-to-peripheral thermal redistribution. It has been proved that initiation of warming before surgery can be more useful for preventing IPH than warming only during surgery. Nevertheless, there are not many researches on effects of short period (<30 min) prewarming, especially in gynecologic laparoscopic surgery. Accordingly, the investigators designed this study to test if IPH can be effectively prevented when 10 minutes of prewarming is added to intraoperative active warming in patients undergoing gynecologic laparoscopic surgery.

Enrollment: 54 patients

Sex: Female

Ages: 19 to 75 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• ASA physical status 1 or 2 patients
• patients who underwent gynecologic laparoscopic surgery under general anesthesia

Exclusion criteria

• preexisting hypothermia (<36℃) or hyperthermia (>37.5℃)
• anesthesia last for <1 hour or >2 hours
• conversion from laparoscopic surgery to laparotomy
• patients with a body mass index (BMI) ≥ 31kg/m2
• patients with known thyroid disease

Trial design

Primary purpose: Prevention

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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54 participants in 2 patient groups

Prewarming group

Experimental group

Description:

Participants in Prewarming group was warmed with forced air warming device (WarmTouch WT 6000 Warming Unit, Medtronic, Minneapolis, MN, USA) over the entire body for 10 minutes before anesthesia was induced in the operating theater. All participants received active warming with forced air warming system from the initiation of anesthetic induction until end of surgery.

Treatment:

Device: Prewarming

Non-prewarming group

No Intervention group

Description:

In Non-prewarming group, no active warming was conducted before induction of anesthesia. Only standard care was provided with introperative active warming with forced air warming system from the initiation of anesthetic induction until end of surgery.