Evaluation of the Effect of Preoperative Prewarming Duration on Postoperative Perfusion Index in Patients Undergoing Colon Resection Surgery: A Randomized Controlled Trial
Sponsor study identifier
interventional
108
1 country
1
Study Start
October 15, 2026
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Primary Completion
February 15, 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Study Completion
March 15, 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
This study will examine whether warming patients before colon resection surgery improves blood flow in the fingers during early recovery from general anesthesia. It will also compare two warming durations. A total of 108 adults scheduled for elective colon resection surgery at Kayseri City Hospital will be assigned by chance to one of three groups: 10 minutes of warming before anesthesia, 30 minutes of warming before anesthesia, or no active warming before anesthesia. All three groups will receive warming during surgery as part of routine care. Warming will be provided using a forced-air warming system. After surgery, a sensor placed on a finger will measure the perfusion index, a noninvasive indicator of blood flow, on arrival in the recovery unit and 5 and 10 minutes later. The main comparison will use the average of these three measurements. The researchers will also assess other circulation measurements, routine blood gas and lactate results, shivering, pain, the time until oral feeding begins, and wound infection during the 14 days after surgery.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
March 15, 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
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Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
September 23, 2026
Actual (reported)October 5, 2026
Actual (reported)October 15, 2026
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
February 15, 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
March 15, 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Mean Postoperative Perfusion Index
Perfusion index (PI) is measured noninvasively using a pulse oximeter at postanesthesia care unit (PACU) admission, 5 minutes, and 10 minutes. The primary outcome is the arithmetic mean of these three measurements. PI reflects the ratio of the pulsatile to nonpulsatile component of the photoplethysmographic signal and is used as an indicator of peripheral perfusion.
At PACU admission and 5 and 10 minutes after admission
Postoperative Pleth Variability Index
At PACU admission and 5 and 10 minutes after admission
Postoperative Arterial Lactate
At postanesthesia care unit (PACU) admission (0 minutes)
Postoperative Arterial pH
At postanesthesia care unit (PACU) admission (0 minutes)
Postoperative Arterial Carbon Dioxide Partial Pressure
At postanesthesia care unit (PACU) admission (0 minutes)
Postoperative Arterial Oxygen Partial Pressure
At postanesthesia care unit (PACU) admission (0 minutes)
Participants receive 10 minutes of active forced-air warming in the preoperative preparation area before induction of general anesthesia. Warming covers the upper and lower body, with settings following manufacturer recommendations and institutional standards. All participants receive routine intraoperative warming as standard care. Standard anesthetic care is provided in all three groups.
Participants receive 30 minutes of active forced-air warming in the preoperative preparation area before induction of general anesthesia. Warming covers the upper and lower body, with settings following manufacturer recommendations and institutional standards. All participants receive routine intraoperative warming as standard care. Standard anesthetic care is provided in all three groups.
Active warming using a forced-air warming system in the preoperative preparation area before general anesthesia. The upper and lower body are warmed for 10 or 30 minutes according to randomized group assignment. Device temperature settings follow manufacturer recommendations and institutional clinical standards.
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
Kayseri City Hospital
Kayseri, 38080, Turkey (Türkiye)
Shim JW, Kwon H, Moon HW, Chae MS. Clinical Efficacy of 10 Min of Active Prewarming for Preserving Patient Body Temperature during Percutaneous Nephrolithotomy: A Prospective Randomized Controlled Trial. J Clin Med. 2024 Mar 22;13(7):1843. doi: 10.3390/jcm13071843.
Xiao Y, Zhang R, Lv N, Hou C, Ren C, Xu H. Effects of a preoperative forced-air warming system for patients undergoing video-assisted thoracic surgery: A randomized controlled trial. Medicine (Baltimore). 2020 Nov 25;99(48):e23424. doi: 10.1097/MD.0000000000023424.
Çiğdem Ünal Kantekin, MD
Kayseri City Hospital
First Submitted
September 23, 2026
First Posted
October 5, 2026
Study Start
October 15, 2026
Perioperative Forced-Air Warming During Elective Cesarean Delivery Under Spinal Anesthesia
Participants receive routine preoperative care without active prewarming before induction of general anesthesia. All participants receive routine intraoperative warming as standard care. Standard anesthetic care is provided in all three groups.
Contact the study team to confirm eligibility.
Lee S, Kim KS, Park SW, You AH, Lee SW, Kim YJ, Kim M, Lee JY, Choi JH. Correlation between the Perfusion Index and Intraoperative Hypothermia: A Prospective Observational Pilot Study. Medicina (Kaunas). 2021 Apr 8;57(4):364. doi: 10.3390/medicina57040364.
This estimate has passed. The registry has not confirmed an actual date for this milestone.
Primary Completion
February 15, 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Study Completion
March 15, 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Last Updated
October 5, 2026
Record last verified: 2026-09
De-identified individual participant data collected in this study will be made available to other researchers upon reasonable request to the principal investigator.
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Source: ClinicalTrials.gov.
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