- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01285206
Carbon Polymer Blankets to Prevent Incidence Of Peri-Operative Hypothermia (IPH) in the DSU
A Study To Determine Whether Carbon Polymer Blankets Can Reduce The During And After Short, Day Operations
Patients whose temperature drops below 36.0 degrees Centigrade during or after surgery suffer more complications, such as wound infections and increased blood loss, resulting in more blood transfusions and longer hospital stays than those who don't.
There is evidence that even a drop below 36.5 degrees Centigrade is sufficient to cause significant adverse effects. Although there is much evidence regarding the effectiveness of warming for long operations, there is nothing looking at short procedures such as those undertaken in the daysurgery setting.
A new carbon polymer blanket (HotDog Augustine Biomedical and Design) has been shown, in volunteer studies, to be as effective as forced air warming blankets (which are used for long operations) in preventing hypothermia. In contrast to forced air, the carbon polymer is reusable and has lower running-costs so is likely to be cheaper in the long term. This is particularly relevant in the day surgery setting where high numbers of patients are operated on. Additionally, and unlike the forced air warmers, the blanket can run on a battery so it can be applied from the moment the patient goes to sleep to the moment they wake up so it could actually prove more effective at preventing hypothermia in the clinical setting. This study aims to determine whether the carbon polymer blankets can reduce the incidence of hypothermia in the day surgery (ie. short operating time) setting.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Recently published NICE guidelines recommend using fluid warmers for all infusions of 500mls or more and forced-air warming blankets for all main theatre operations. These guidelines have been extrapolated from work done on longer operations.
Patients whose temperature drops below 36 degrees Centigrade during or after surgery suffer more complications and blood loss than those whose temperature remains above 36 degrees Centigrade. They also often require more blood transfusions and stay in hospital for longer. Some of these complications are more common even when the temperature drops below 36.5.
Disposable forced-air warming blankets prevent hypothermia, but cannot be re-used and therefore incur a significant expense in terms of consumables.
Re-usable carbon polymer blankets, such as the HotDog, have been shown to not only be effective in preventing hypothermia, but have also been shown to maintain core temperature as effectively as forced air blankets.
Carbon polymer blankets are re-usable, with the added associated benefit of lower running costs. Therefore, in the face of limited NHS resources a reusable money saving alternative, such as the carbon polymer HotDog, would be a preferred option to the disposable forced air blanket.
The current data on the effectiveness of the carbon polymer blanket is from volunteers. This study is actually powered to show a reduction in the number of patients who get cold in a clinical setting.
References:
NICE. Perioperative hypothermia (inadvertent): the management of inadvertent peri-operative hypothermia in adults.NICE Clinical Guideline 29. London: National Institute for Health and Clinical Excellence, 2008. http://www.nice.org.uk/GC065.
Schmeid H, Kurz A, Sessler DI, Kozek S, Reiter A. Mild hypothermia increases blood loss and transfusion requirements during total hip arthroplasty. The Lancet 1996; 347:289-92.
Rajagopalan S, Mascha E, Na J, Sessler DI: The Effects of Mild Perioperative Hypothermia on Blood Loss and Transfusion Requirement. Anesthesiology 2008;108:717.
Study Type
Enrollment (Anticipated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Manu N Sharma, MBBS
- Email: mpns@doctors.org.uk
Study Contact Backup
- Name: C. Mark Harper, MBBS
- Email: mark.harper@doctors.org.uk
Study Locations
-
-
East Sussex
-
Brighton, East Sussex, United Kingdom
- Recruiting
- Brighton and Sussex University Hospitals NHS Trust
-
Principal Investigator:
- Mark C Harper, MBBS
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- All patients, who are scheduled for non-emergency daycase surgery which will take place with them in the supine position
Exclusion Criteria:
- Those patients who refuse
- Who are unable to fully understand the trial and give valid
- Informed consent; OR
- Who will not be positioned supine on the operating table
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Routine practice
|
Routine practice ( + no carbon polymer blanket) versus use of HotDog carbon polymer warming blanket throughout day surgery procedure
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Core temperature
Time Frame: Every 15 minutes
|
Temperatures will be taken: Preoperatively on the day case unit ward, At the beginning of the operation Every 15 minutes thereafter intraoperatively. At the end of the operation in recovery Every 30 minutes until discharged home. |
Every 15 minutes
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Total blood loss
Time Frame: At the end of the operative procedure
|
Total blood loss will be recorded by surgical team.
Blood collected in suction cannister and estimated blood loss from surgical swab wet vs. dry weight
|
At the end of the operative procedure
|
Blood transfusion
Time Frame: From the start of the operation until discharge. If patient is re-admitted within 24 hours requiring blood transfusion - also be counted
|
Whether a blood transfusion has taken place as a direct consequence of the operation will be recorded in the patients notes.
The type and amount of blood products given will also be recorded in the patients notes and by the hospital blood bank services
|
From the start of the operation until discharge. If patient is re-admitted within 24 hours requiring blood transfusion - also be counted
|
Wound infection
Time Frame: Upon patient discharge/ At GP follow-up at one month
|
The development of a wound infection will either be recorded in the patient's notes if associated with the patient's hospital stay, or the information will be obtained from the GP follow-up phone-call.
|
Upon patient discharge/ At GP follow-up at one month
|
Shivering (need for treatment or not)
Time Frame: Recorded during recovery stay
|
The occurrence of shivering (andneed for treatment or not) will be recorded by the recovery staff on the questionnaire sheets
|
Recorded during recovery stay
|
Time in recovery
Time Frame: Recorded during recovery stay
|
This will recorded by the recovery staff as entry time and discharge time from recovery.
|
Recorded during recovery stay
|
Time taken for patient to be considered fit for discharge i.e. length of hospital stay.
Time Frame: Upon discharge from hospital
|
This data will be taken from the patient's notes: operation date until date of (fit for) discharge from hospital
|
Upon discharge from hospital
|
Collaborators and Investigators
Investigators
- Study Director: C. Mark Harper, MBBS, Brighton and Sussex University Hospitals NHS Trust
Publications and helpful links
Helpful Links
Study record dates
Study Major Dates
Study Start
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 10/H1107/5
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Hypothermia
-
RECIO PÉREZ, JESÚSUniversity of AlcalaCompletedHypothermia; Anesthesia | Hypothermia Following Anesthesia | Hypothermia Following Anesthesia, Sequela | Hypothermia Due to AnestheticSpain
-
The University of Texas Health Science Center,...RecruitingHypothermia; Anesthesia | Hypothermia, Newborn | Hypothermia, SequelaUnited States
-
Michael Garron HospitalCompletedHypothermia | Body Temperature Changes | Hypothermia Following Anesthesia | Hypothermia, Accidental | Hypothermia Due to AnestheticCanada
-
Centre Leon BerardCompletedHypothermia | Hypothermia; Anesthesia | Hypothermia, AccidentalFrance
-
Marmara UniversityCompletedHypothermia; Anesthesia | Hypothermia Following AnesthesiaTurkey
-
Marmara UniversityCompletedHypothermia; Anesthesia | Hypothermia Following AnesthesiaTurkey
-
Ciusss de L'Est de l'Île de MontréalCompletedHypothermia Following Anesthesia | Hypothermia, AccidentalCanada
-
Ankara Diskapi Training and Research HospitalCompletedPreventing Hypothermia | Perioperative HypothermiaTurkey
-
Universitat Internacional de CatalunyaRecruitingHypothermia | Hypothermia; Anesthesia | Hypothermia, AccidentalSpain
-
Universitair Ziekenhuis BrusselCompletedChildren | Hypothermia; Anesthesia | Hypothermia Following AnesthesiaBelgium
Clinical Trials on Carbon polymer warming blanket
-
Brighton and Sussex University Hospitals NHS TrustCompletedInadvertent Perioperative Hypothermia | Patient WarmingUnited Kingdom
-
Stanford UniversityCompleted
-
Haukeland University HospitalRecruitingAccidental HypothermiaNorway
-
Stanford UniversityCompleted
-
University of MalayaCompletedTo Prevent Hypercarbia Under the Opthalmology Drape During Surgery. | To Prevent Hypothermia During Opthalmology Surgery.Malaysia
-
Dokuz Eylul UniversityCompletedSurgical Site Infection
-
Stanford UniversityCompleted
-
Molnlycke Health Care ABCompletedInadvertent Perioperative Hypothermia | Anesthesia Induced Hypothermia
-
University of MinnesotaRecruitingSurgery | Temperature Change, BodyUnited States
-
University of British ColumbiaCompletedCesarean DeliveryCanada