10 Minutes Prewarming and Warmed Intravenous Fluid on Core Temperature

Inje University

Status: Completed

Conditions: Urologic Diseases

Treatments: Other: prewarming and warmed fluid infusion

Study type: Interventional

Funder types: Other

Identifiers

NCT04991272

2021-05-004

Details and patient eligibility

About

Hypothermia occurs frequently during general anesthesia. This study is to evaluate the efficacy of 10 minutes of prewarming and warmed fluid during urologic surgery.

Full description

During general anesthesia, vasodilation distributes body heat and leads to hypothermia. Especially during urologic operation (transurethral resection of bladder and prostate), bladder irrigation worsens hypothermia. Hence, various methods are used to maintain core temperature during operation.

Previous studies have demonstrated that prewarming of the patient is effective in maintaining core temperature perioperatively. However, more than 50% of patients who have applied prewarming for more than 30 minutes preoperatively are reported to fall in hypothermia. Hence, developing simple and effective method to prevent hypothermia is expected.

Hence, the investigators planned to examine the effect of active warming (10 minutes of prewarming preoperatively and prewarmed intravenous fluid intraoperatively) on hypothermia in patients undergoing urologic operation under general anesthesia.

Enrollment: 57 patients

Sex: All

Ages: 20 to 90 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• patients undergoing urologic surgery(transurethral resection of bladder, prostate)

Exclusion criteria

• moderate to severe cardiopulmonary, renal impairment
• thyroid disease
• any infection sign
• abnormal temperature prior to induction of general anesthesia (<36'C or >37.5'C)
• refusal to participate in the study
• unable to understand the study

Trial design

Primary purpose: Prevention

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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57 participants in 2 patient groups

warming group

Active Comparator group

Description:

Warming group patients are applied prewarming with bair-hugger (43'C)(warm touch, COVIDIEN, full body blanket) for 10 minutes in the preanesthetic unit prior to induction of anesthesia. During operation, prewarmed intravenous fluid which was stored in the warming cabinet for more than 8 hours is connected and infused. Forced air blanket (warm touch, COVIDIEN, upper body blanket) with 38'C is applied for all patients during the operation.

Treatment:

Other: prewarming and warmed fluid infusion

no warming group

No Intervention group

Description:

No warming group patients are not applied prewarming devices. Intravenous fluid stored in room air is connected and infused during the operation. Forced air blanket (warm touch, COVIDIEN, upper body blanket) with 38'C is applied for all patients during the operation.