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Prevention of IPH: Electric Warming Mattress vs Forced Air Warming Blanket

This study has been completed.
Information provided by (Responsible Party):
Dr C. Mark Harper, Brighton and Sussex University Hospitals NHS Trust Identifier:
First received: January 25, 2010
Last updated: June 11, 2014
Last verified: June 2014
This study will determine if modern under-patient warming mattresses are as effective as forced air warming blankets in preventing cold and shivering in patients scheduled for non emergency surgery.

Condition Intervention
Inadvertent Perioperative Hypothermia Patient Warming Other: warming mattress Other: warming blanket

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single (Investigator)
Primary Purpose: Prevention
Official Title: A Study to Determine if Modern Under-patient Warming Mattresses Are as Effective as Forced-air Warming Blankets in Preventing Peri-operative Hypothermia

Resource links provided by NLM:

Further study details as provided by Dr C. Mark Harper, Brighton and Sussex University Hospitals NHS Trust:

Primary Outcome Measures:
  • Post-operative core temperature greater than or equal to 36 degrees centigrade. This is a surrogate marker for complications such as reduced wound infection and reduced hospital stay that have been previously established by other research. [ Time Frame: 15minutes to 2 hours approximately postoperatively in recovery room ]

Secondary Outcome Measures:
  • shivering [ Time Frame: up to 2h post op (time in recovery) ]
  • Core temperature [ Time Frame: From induction of anaesthesia to arrival in recovery ]

Enrollment: 120
Study Start Date: February 2010
Study Completion Date: March 2013
Primary Completion Date: March 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: warming mattress
Patient warmed with electric mattress
Other: warming mattress
comparison of under patient warming mattress to forced air warming blankets in preventing peri-operative hypothermia
Other Name: Inditherm electric carbon polymer warming mattress
Active Comparator: warming blanket
Forced air warming blanket
Other: warming blanket
Other Names:
  • forced-air warming blanket
  • Bair hugger


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • All patients undergoing elective (non emergency) surgery who will require intra-operative warming
  • Patients whose surgery will be performed with them in the supine position

Exclusion Criteria:

  • Abdominal aortic aneurysm repair
  • All adults (over 18 years) who refuse,who are unable to fully understand the trial
  • ALL laparoscopic surgeries
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01056991

United Kingdom
Royal Sussex County Hospital, BSUH NHS Trust
Brighton, United Kingdom, BN2 5BE
Sponsors and Collaborators
Brighton and Sussex University Hospitals NHS Trust
Principal Investigator: Christopher M Harper, MBBS FRCA BSUH
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Dr C. Mark Harper, Consultant Anaesthetist, Brighton and Sussex University Hospitals NHS Trust Identifier: NCT01056991     History of Changes
Other Study ID Numbers: 09/183/HAR
Study First Received: January 25, 2010
Last Updated: June 11, 2014

Additional relevant MeSH terms:
Body Temperature Changes
Signs and Symptoms processed this record on September 21, 2017