NCT02518815

Brief Summary

This study examined whether 20 minutes of prewarming prior to gynecological laparoscopic surgery prevented inadvertent post-operative hypothermia. Treatment group received prewarming using a forced air body warming, control group received no active warming system. Both groups were then warmed with forced air warmer intraoperatively.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
42

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started May 2013

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

May 1, 2013

Completed
8 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

January 1, 2014

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

January 1, 2014

Completed
1.6 years until next milestone

First Submitted

Initial submission to the registry

July 22, 2015

Completed
19 days until next milestone

First Posted

Study publicly available on registry

August 10, 2015

Completed
Last Updated

August 10, 2015

Status Verified

August 1, 2015

Enrollment Period

8 months

First QC Date

July 22, 2015

Last Update Submit

August 5, 2015

Conditions

Hypothermia Following AnesthesiaHypothermiaHypothermia, AccidentalBody Temperature ChangesHypothermia Due to Anesthetic

Outcome Measures

Primary Outcomes (1)

  • Oral temperature immediately postoperatively

    Immediate postoperative oral temperature on admission to the post-anesthetic care unit.

    Immediately post-operatively

Secondary Outcomes (3)

  • Oral temperature 30 minutes postoperatively

    30 min after admission to post-anesthetic care unit

  • Oral temperature at discharge from post-anesthetic care unit

    Discharge from post-anesthetic care unit (average 99 minutes)

  • 11-point Pain score

    30 min after admission to post-anesthetic care unit

Study Arms (2)

Prewarming group

EXPERIMENTAL

Prewarmed for 20 minutes prior to OR using 3M Bair Paws System, a forced air warming blanket. This warming blanket was then used intraoperatively throughout the case.

Device: 3M Bair Paws Warming System

Control group

NO INTERVENTION

Patients received standard care, which is no active prewarming prior to OR. A full body, forced air warming blanket (same as treatment group) was used intraoperatively throughout the case.

Interventions

3M Bair Paws Warming SystemDEVICE

20 minutes of prewarming immediately pre-operatively using 3M Bair Paws warming system

Prewarming group

Eligibility Criteria

Age16 Years+
Sexfemale
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

  • ASA I-III
  • undergoing elective laparoscopic gynecological surgical procedures
  • expected duration \>60 minutes
  • BMI 18-45

You may not qualify if:

  • Current fever (temperature\>38.1°C)

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Toronto East General Hospital

Toronto, Ontario, M4C 3E7, Canada

Location

Related Publications (28)

  • Bellamy C. Inadvertent hypothermia in the operating theatre: an examination. J Perioper Pract. 2007 Jan;17(1):18-25. doi: 10.1177/175045890701700102.

    PMID: 17265749BACKGROUND

  • Kurz A. Physiology of thermoregulation. Best Pract Res Clin Anaesthesiol. 2008 Dec;22(4):627-44. doi: 10.1016/j.bpa.2008.06.004.

    PMID: 19137807BACKGROUND

  • Annadata R, Sessler DI, Tayefeh F, Kurz A, Dechert M. Desflurane slightly increases the sweating threshold but produces marked, nonlinear decreases in the vasoconstriction and shivering thresholds. Anesthesiology. 1995 Dec;83(6):1205-11. doi: 10.1097/00000542-199512000-00011.

    PMID: 8533913BACKGROUND

  • Kurz A, Go JC, Sessler DI, Kaer K, Larson MD, Bjorksten AR. Alfentanil slightly increases the sweating threshold and markedly reduces the vasoconstriction and shivering thresholds. Anesthesiology. 1995 Aug;83(2):293-9. doi: 10.1097/00000542-199508000-00009.

    PMID: 7631951BACKGROUND

  • Matsukawa T, Kurz A, Sessler DI, Bjorksten AR, Merrifield B, Cheng C. Propofol linearly reduces the vasoconstriction and shivering thresholds. Anesthesiology. 1995 May;82(5):1169-80. doi: 10.1097/00000542-199505000-00012.

    PMID: 7741292BACKGROUND

  • Talke P, Tayefeh F, Sessler DI, Jeffrey R, Noursalehi M, Richardson C. Dexmedetomidine does not alter the sweating threshold, but comparably and linearly decreases the vasoconstriction and shivering thresholds. Anesthesiology. 1997 Oct;87(4):835-41. doi: 10.1097/00000542-199710000-00017.

    PMID: 9357885BACKGROUND

  • Sessler DI. Perioperative thermoregulation and heat balance. Ann N Y Acad Sci. 1997 Mar 15;813:757-77. doi: 10.1111/j.1749-6632.1997.tb51779.x.

    PMID: 9100967BACKGROUND

  • Buggy DJ, Crossley AW. Thermoregulation, mild perioperative hypothermia and postanaesthetic shivering. Br J Anaesth. 2000 May;84(5):615-28. doi: 10.1093/bja/84.5.615. No abstract available.

    PMID: 10844839BACKGROUND

  • Doufas AG. Consequences of inadvertent perioperative hypothermia. Best Pract Res Clin Anaesthesiol. 2003 Dec;17(4):535-49. doi: 10.1016/s1521-6896(03)00052-1.

    PMID: 14661656BACKGROUND

  • Reynolds L, Beckmann J, Kurz A. Perioperative complications of hypothermia. Best Pract Res Clin Anaesthesiol. 2008 Dec;22(4):645-57. doi: 10.1016/j.bpa.2008.07.005.

    PMID: 19137808BACKGROUND

  • Kurz A, Sessler DI, Lenhardt R. Perioperative normothermia to reduce the incidence of surgical-wound infection and shorten hospitalization. Study of Wound Infection and Temperature Group. N Engl J Med. 1996 May 9;334(19):1209-15. doi: 10.1056/NEJM199605093341901.

    PMID: 8606715BACKGROUND

  • Sessler DI, Schroeder M, Merrifield B, Matsukawa T, Cheng C. Optimal duration and temperature of prewarming. Anesthesiology. 1995 Mar;82(3):674-81. doi: 10.1097/00000542-199503000-00009.

    PMID: 7879936BACKGROUND

  • Vanni SM, Braz JR, Modolo NS, Amorim RB, Rodrigues GR Jr. Preoperative combined with intraoperative skin-surface warming avoids hypothermia caused by general anesthesia and surgery. J Clin Anesth. 2003 Mar;15(2):119-25. doi: 10.1016/s0952-8180(02)00512-3.

    PMID: 12719051BACKGROUND

  • Hocker J, Bein B, Bohm R, Steinfath M, Scholz J, Horn EP. Correlation, accuracy, precision and practicability of perioperative measurement of sublingual temperature in comparison with tympanic membrane temperature in awake and anaesthetised patients. Eur J Anaesthesiol. 2012 Feb;29(2):70-4. doi: 10.1097/EJA.0b013e32834cd6de.

    PMID: 22037543BACKGROUND

  • Amoateng-Adjepong Y, Del Mundo J, Manthous CA. Accuracy of an infrared tympanic thermometer. Chest. 1999 Apr;115(4):1002-5. doi: 10.1378/chest.115.4.1002.

    PMID: 10208200BACKGROUND

  • Frank SM, Fleisher LA, Breslow MJ, Higgins MS, Olson KF, Kelly S, Beattie C. Perioperative maintenance of normothermia reduces the incidence of morbid cardiac events. A randomized clinical trial. JAMA. 1997 Apr 9;277(14):1127-34.

    PMID: 9087467BACKGROUND

  • Melling AC, Ali B, Scott EM, Leaper DJ. Effects of preoperative warming on the incidence of wound infection after clean surgery: a randomised controlled trial. Lancet. 2001 Sep 15;358(9285):876-80. doi: 10.1016/S0140-6736(01)06071-8.

    PMID: 11567703BACKGROUND

  • Schmied H, Kurz A, Sessler DI, Kozek S, Reiter A. Mild hypothermia increases blood loss and transfusion requirements during total hip arthroplasty. Lancet. 1996 Feb 3;347(8997):289-92. doi: 10.1016/s0140-6736(96)90466-3.

    PMID: 8569362BACKGROUND

  • Winkler M, Akca O, Birkenberg B, Hetz H, Scheck T, Arkilic CF, Kabon B, Marker E, Grubl A, Czepan R, Greher M, Goll V, Gottsauner-Wolf F, Kurz A, Sessler DI. Aggressive warming reduces blood loss during hip arthroplasty. Anesth Analg. 2000 Oct;91(4):978-84. doi: 10.1097/00000539-200010000-00039.

    PMID: 11004060BACKGROUND

  • Horn EP, Bein B, Bohm R, Steinfath M, Sahili N, Hocker J. The effect of short time periods of pre-operative warming in the prevention of peri-operative hypothermia. Anaesthesia. 2012 Jun;67(6):612-7. doi: 10.1111/j.1365-2044.2012.07073.x. Epub 2012 Feb 29.

    PMID: 22376088BACKGROUND

  • Ott DE, Reich H, Love B, McCorvey R, Toledo A, Liu CY, Syed R, Kumar K. Reduction of laparoscopic-induced hypothermia, postoperative pain and recovery room length of stay by pre-conditioning gas with the Insuflow device: a prospective randomized controlled multi-center study. JSLS. 1998 Oct-Dec;2(4):321-9.

    PMID: 10036122BACKGROUND

  • Makinen MT. Comparison of body temperature changes during laparoscopic and open cholecystectomy. Acta Anaesthesiol Scand. 1997 Jun;41(6):736-40. doi: 10.1111/j.1399-6576.1997.tb04775.x.

    PMID: 9241334BACKGROUND

  • Luck AJ, Moyes D, Maddern GJ, Hewett PJ. Core temperature changes during open and laparoscopic colorectal surgery. Surg Endosc. 1999 May;13(5):480-3. doi: 10.1007/s004649901017.

    PMID: 10227947BACKGROUND

  • Peng Y, Zheng M, Ye Q, Chen X, Yu B, Liu B. Heated and humidified CO2 prevents hypothermia, peritoneal injury, and intra-abdominal adhesions during prolonged laparoscopic insufflations. J Surg Res. 2009 Jan;151(1):40-7. doi: 10.1016/j.jss.2008.03.039. Epub 2008 Apr 23.

    PMID: 18639246BACKGROUND

  • Nelskyla K, Yli-Hankala A, Sjoberg J, Korhonen I, Korttila K. Warming of insufflation gas during laparoscopic hysterectomy: effect on body temperature and the autonomic nervous system. Acta Anaesthesiol Scand. 1999 Nov;43(10):974-8. doi: 10.1034/j.1399-6576.1999.431002.x.

    PMID: 10593458BACKGROUND

  • Fernandes LA, Braz LG, Koga FA, Kakuda CM, Modolo NS, de Carvalho LR, Vianna PT, Braz JR. Comparison of peri-operative core temperature in obese and non-obese patients. Anaesthesia. 2012 Dec;67(12):1364-9. doi: 10.1111/anae.12002.x. Epub 2012 Oct 22.

    PMID: 23088746BACKGROUND

  • Nguyen NT, Fleming NW, Singh A, Lee SJ, Goldman CD, Wolfe BM. Evaluation of core temperature during laparoscopic and open gastric bypass. Obes Surg. 2001 Oct;11(5):570-5. doi: 10.1381/09608920160557039.

    PMID: 11594097BACKGROUND

  • De Witte JL, Demeyer C, Vandemaele E. Resistive-heating or forced-air warming for the prevention of redistribution hypothermia. Anesth Analg. 2010 Mar 1;110(3):829-33. doi: 10.1213/ANE.0b013e3181cb3ebf. Epub 2009 Dec 30.

    PMID: 20042439BACKGROUND

MeSH Terms

Conditions

HypothermiaBody Temperature Changes

Condition Hierarchy (Ancestors)

Signs and SymptomsPathological Conditions, Signs and Symptoms

Study Officials

  • James Kulchyk, MD

    Michael Garron Hospital

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

July 22, 2015

First Posted

August 10, 2015

Study Start

May 1, 2013

Primary Completion

January 1, 2014

Study Completion

January 1, 2014

Last Updated

August 10, 2015

Record last verified: 2015-08

Locations

CA(1)