Forced-Air Warming for Preventing Perioperative Hypothermia During Total Knee Arthroplasty (NCT07613203) | Clinical Trial Compass
CompletedNot Applicable
Forced-Air Warming for Preventing Perioperative Hypothermia During Total Knee Arthroplasty
China240 participantsStarted 2018-05-01
Plain-language summary
Perioperative hypothermia is a common complication during total knee arthroplasty (TKA) and may increase the risk of shivering, delayed anesthetic recovery, and postoperative complications. This historical control study aims to evaluate the effectiveness and safety of intraoperative forced-air warming in preventing perioperative hypothermia in patients undergoing primary unilateral TKA.
A total of 240 patients were included. Patients in the historical control group received routine passive warming measures, while patients in the intervention group received additional forced-air warming during the perioperative period. Core body temperature, incidence of inadvertent perioperative hypothermia, anesthetic recovery outcomes, postoperative complications, and safety outcomes were evaluated.
Who can participate
Age range
60 Years – 85 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Age between 60 and 85 years
* ASA physical status I or II
* Diagnosed with knee osteoarthritis
* Undergoing first unilateral primary total knee arthroplasty
* Able to provide written informed consent
Exclusion Criteria:
* Abnormal coagulation function (international normalized ratio \>1.2)
* Preoperative body temperature \>37.5°C or \<36°C
* Cognitive or psychiatric disorders affecting communication
* Moderate or severe anemia
* Body mass index \>30 kg/m² or \<18.5 kg/m²
* Moderate or severe malnutrition
* Surgery duration longer than 4 hours
* Intraoperative blood loss greater than 500 mL
* Transfer to surgical intensive care unit after surgery
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Incidence of Inadvertent Perioperative Hypothermia
Timeframe: From anesthesia induction to 90 minutes after anesthesia completion
2
Perioperative Core Temperature Change
Timeframe: From operating room entry to 90 minutes after anesthesia completion