10 Minutes Prewarming and Warmed Intravenous Fluid on Core Temperature

Inje University57 enrolled

Overview

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

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.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

PREVENTION

Masking

SINGLE

Enrollment

Conditions

Urologic Diseases

Interventions

prewarming and warmed fluid infusionOTHER

prewarming with forced air warming system and warmed fluid infusion.

Eligibility

Sex: ALLMin age: 20 YearsMax age: 90 YearsHealthy volunteers:

Medical Language ↔ Plain English

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

Locations (1)

Sanggye Paik Hospital

Seoul, South Korea

Outcomes

Primary Outcomes

incidence of hypothermia at the end of the operation

after completion of the operation, number of patients with hypothermia (\<36'C) using esophageal stethoscope will be recorded.

Time frame: approximately 1-2hours after induction (at the end of operation)

Secondary Outcomes

change in temperature before and end of operation

change in core temperature will be calculated and compared

Time frame: on arrival at the OR upto 1-2hours after induction (at the end of the operation)

incidence of shivering

shivering will be evaluated using 4 point shivering scale (0=none, 1=core and neck shivering, 2= upper extremity 3= whole body)

Time frame: upto 1 hour after end of the operation (on arrival at the postanesthesia care unit)

thermal comfort

thermal comfort will be evaluated using thermal comfort scale ( 0= very cold, 5= fine, 10= very hot and uncomfortable)

Time frame: upto 1hour after end of the operation (at discharge of postanesthesia care unit)

Data from ClinicalTrials.gov

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