Effect of Forced-air Warming and Circulating-water Mattress in Preventing Heat Loss During Vascular Surgery

Phase 2

Completed

• Conditions: Hypothermia; Vascular Surgery; Forced-air Warming Mattress; Circulating-water Mattress
• Interventions: Device: warming device (a reusable, custom-made forced- air warming mattress)

• Registration Number: NCT00712023
• Lead Sponsor: Mahidol University

Brief Summary

The purpose of this study is to determine whether a custom-made forced-air warming mattress can prevent heat loss in patients undergoing vascular surgery better than a circulating-water mattress

Detailed Description

A reusable, custom-made forced-air warming mattress was made of a light to medium weight water resistant canvas, sewn like mattress with 2 arms placed underneath the patient. An open hole at proximal part of one arm was designed to attach with a hose of warm air delivery device. Small holes (2-3 mm2), 5 inches apart were punched on the upper surface of this mattress around the patient except for the area underneath the patient that the holes were 9 inches apart. The weight of the patient will obstruct the air flow and prevent direct blowing of warm air onto the underside of patients. There is a special appendage connected to the upper part of mattress which can connect warm air to cover the patient's chest. There is a special appendage connected to the upper part of mattress which can convect warm air to cover the patient's chest. The mattress is 97 inches x 97 inches, with 2 arms of 25 inches x 16 inches and a special appendage of 45 inches x 12 inches for covering the chest with warm air delivery. This size is proper for patient of 170 cm. height. In order to reuse it, the mattress can be washed, dried and sterilized by gas or autoclaved for more than 50 times. A sterile sheet well enhance the sterile environment of the operating field.

Study Timeline

• Study Start: 2007-07
• Status Verified: 2008-04
• Study First Submitted: 2008-05-14
• Study First Submitted QC: 2008-07-08
• Study First Posted: 2008-07-09
• Primary Completion: 2008-09
• Study Completion: 2008-09
• Last Update Submitted: 2009-09-27
• Last Update Posted: 2009-09-29

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 44

Inclusion Criteria

Patients undergoing vascular surgery

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Exclusion Criteria

Preoperative fever

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
1	warming device (a reusable, custom-made forced- air warming mattress)	warming by circulating-water mattress

Primary Outcome Measures

Name	Time	Method
skin and nasopharyngeal temperature	180 min

Secondary Outcome Measures

Name	Time	Method
burn wound	3 days

Trial Locations

Locations (1)

Departnment of Anesthesiology,Siriraj Hospital, Mahidol University; 🇹🇭 Bangkok, Thailand