Effects of Preanesthetic Forced Air Warming and Administration of Warmed Intravascular Fluid
NCT ID: NCT03256786
Last Updated: 2019-02-27
Study Results
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Basic Information
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COMPLETED
50 participants
OBSERVATIONAL
2017-07-12
2018-04-30
Brief Summary
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A previous study has shown several modalities to prevent hypothermia and shivering in patients undergoing cesarean delivery with spinal anesthesia. But, single modality intervention have shown marginal or no efficacy.
Neuraxial anesthesia reduces the threshold for vasoconstriction and shivering. It often also produces a lower body sympathectomy that provokes a core to peripheral redistribution of body heat. It is difficult to treat the core to peripheral redistribution of body heat. However redistribution can be prevented by preanesthetic cutaneous warming. Prewarming hardly changes core temperature that remains well regulated, but it markedly increases peripheral tissue heat content. As a result, prewarming reduces the core to peripheral tissue temperature gradient and the propensity for redistribution after the induction of anesthesia.
We therefore hypothesized that Combined modality active warming consisting of preoperative 15 min of surface warming using a forced air warmer before spinal anesthesia and coloading of warmed intravenous fluid might reduce perioperative hypothermia and shivering in women undergoing cesarean delivery. Additionally, We tested the hypothesis that maintaining maternal normothermia increases newborn temperature and Apgar scores.
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Detailed Description
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Conditions
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Study Design
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CASE_CONTROL
PROSPECTIVE
Study Groups
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Active warming
preoperative 15 min of surface warming using a forced air warmer before spinal anesthesia and coloading of warmed intravenous fluid
Prewarming using forced air warmer, warmed intravenous fluid
Combined modality active warming consisting of preoperative 15 min of surface warming using a forced air warmer before spinal anesthesia and coloading of warmed intravenous fluid in active warming group
Control
no preoperative warming and room temperature intravenous fluid
No interventions assigned to this group
Interventions
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Prewarming using forced air warmer, warmed intravenous fluid
Combined modality active warming consisting of preoperative 15 min of surface warming using a forced air warmer before spinal anesthesia and coloading of warmed intravenous fluid in active warming group
Eligibility Criteria
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Inclusion Criteria
* The American Society of Anesthesiologists physical status class one or two
* female between 20 and 45
Exclusion Criteria
* Patients with infectious disease
* Patients with coagulopathy
* Patients with a drug allergy
* In case of switching to general anesthesia
* Patients BMI under 18.5 or over 31
20 Years
45 Years
FEMALE
Yes
Sponsors
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Hallym University Kangnam Sacred Heart Hospital
OTHER
Responsible Party
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Choi Eun MI
Clinical Professor
Principal Investigators
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Eun Mi Choi, MD
Role: STUDY_DIRECTOR
Hallym University Kangnam Sacred Heart Hospital
Locations
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Kangnam sacred heart hospital
Seoul, Yeongdeungpo-gu, South Korea
Countries
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References
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Carpenter L, Baysinger CL. Maintaining perioperative normothermia in the patient undergoing cesarean delivery. Obstet Gynecol Surv. 2012 Jul;67(7):436-46. doi: 10.1097/OGX.0b013e3182605ccd.
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.
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.
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.
Knobel RB, Wimmer JE Jr, Holbert D. Heat loss prevention for preterm infants in the delivery room. J Perinatol. 2005 May;25(5):304-8. doi: 10.1038/sj.jp.7211289.
Watkinson M. Temperature control of premature infants in the delivery room. Clin Perinatol. 2006 Mar;33(1):43-53, vi. doi: 10.1016/j.clp.2005.11.018.
Butwick AJ, Lipman SS, Carvalho B. Intraoperative forced air-warming during cesarean delivery under spinal anesthesia does not prevent maternal hypothermia. Anesth Analg. 2007 Nov;105(5):1413-9, table of contents. doi: 10.1213/01.ane.0000286167.96410.27.
Yokoyama K, Suzuki M, Shimada Y, Matsushima T, Bito H, Sakamoto A. Effect of administration of pre-warmed intravenous fluids on the frequency of hypothermia following spinal anesthesia for Cesarean delivery. J Clin Anesth. 2009 Jun;21(4):242-8. doi: 10.1016/j.jclinane.2008.12.010. Epub 2009 Jun 6.
Cobb B, Cho Y, Hilton G, Ting V, Carvalho B. Active Warming Utilizing Combined IV Fluid and Forced-Air Warming Decreases Hypothermia and Improves Maternal Comfort During Cesarean Delivery: A Randomized Control Trial. Anesth Analg. 2016 May;122(5):1490-7. doi: 10.1213/ANE.0000000000001181.
Horn EP, Schroeder F, Gottschalk A, Sessler DI, Hiltmeyer N, Standl T, Schulte am Esch J. Active warming during cesarean delivery. Anesth Analg. 2002 Feb;94(2):409-14, table of contents. doi: 10.1097/00000539-200202000-00034.
Matsukawa T, Sessler DI, Christensen R, Ozaki M, Schroeder M. Heat flow and distribution during epidural anesthesia. Anesthesiology. 1995 Nov;83(5):961-7. doi: 10.1097/00000542-199511000-00008.
Matsukawa T, Sessler DI, Sessler AM, Schroeder M, Ozaki M, Kurz A, Cheng C. Heat flow and distribution during induction of general anesthesia. Anesthesiology. 1995 Mar;82(3):662-73. doi: 10.1097/00000542-199503000-00008.
Rajek A, Greif R, Sessler DI. Effects of epidural anesthesia on thermal sensation. Reg Anesth Pain Med. 2001 Nov-Dec;26(6):527-31. doi: 10.1053/rapm.2001.25924.
Chung SH, Lee BS, Yang HJ, Kweon KS, Kim HH, Song J, Shin DW. Effect of preoperative warming during cesarean section under spinal anesthesia. Korean J Anesthesiol. 2012 May;62(5):454-60. doi: 10.4097/kjae.2012.62.5.454. Epub 2012 May 24.
Jun JH, Chung MH, Jun IJ, Kim Y, Kim H, Kim JH, Choi YR, Choi EM. Efficacy of forced-air warming and warmed intravenous fluid for prevention of hypothermia and shivering during caesarean delivery under spinal anaesthesia: A randomised controlled trial. Eur J Anaesthesiol. 2019 Jun;36(6):442-448. doi: 10.1097/EJA.0000000000000990.
Other Identifiers
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kangnamAN
Identifier Type: -
Identifier Source: org_study_id
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