Forced-Air Warming for Preventing Perioperative Hypot
Effect of Intraoperative Forced-air Warming on Perioperative Hypothermia and Related Complications in Patients Undergoing Total Knee Arthroplasty: A Historical Control Study
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.
Studieöversikt
Status
Betingelser
Intervention / Behandling
Detaljerad beskrivning
This single-center historical control study was conducted at Shanghai 6th People's Hospital between May 2018 and December 2018 to evaluate the effectiveness of intraoperative forced-air warming for preventing perioperative hypothermia in patients undergoing total knee arthroplasty (TKA).
A total of 240 patients undergoing primary unilateral TKA were enrolled and divided into two groups according to the study period. Patients enrolled between May 2018 and August 2018 were assigned to the historical control group and received routine passive warming measures, including warmed intravenous fluids, warmed irrigation fluids, operating room temperature control, and cotton blanket coverage. Patients enrolled between September 2018 and December 2018 were assigned to the intervention group and received additional active warming using a forced-air warming system during the perioperative period.
The forced-air warming system was initiated 30 minutes before anesthesia induction and continued until transfer to the post-anesthesia care unit (PACU). Core temperature was continuously monitored using a temperature-sensing urinary catheter.
The primary outcomes included perioperative core temperature changes and the incidence of inadvertent perioperative hypothermia, defined as core temperature below 36°C at any perioperative time point. Secondary outcomes included postoperative shivering, emergence agitation, anesthetic recovery time, blood loss, postoperative complications, and safety outcomes including skin burns and surgical site infection.
This study was approved by the Ethics Committee of Shanghai 6th People's Hospital (Approval No. 05.12.19035). Written informed consent was obtained from all participants before enrollment.
Studietyp
Inskrivning (Faktisk)
Fas
- Inte tillämpbar
Kontakter och platser
Studieorter
-
-
Shanghai Municipality
-
Shanghai, Shanghai Municipality, Kina, 200233
- Shanghai 6th People's Hospital
-
-
Deltagandekriterier
Urvalskriterier
Åldrar som är berättigade till studier
- Vuxen
- Äldre vuxen
Tar emot friska volontärer
Beskrivning
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
Studieplan
Hur är studien utformad?
Designdetaljer
- Primärt syfte: Förebyggande
- Tilldelning: Icke-randomiserad
- Interventionsmodell: Parallellt uppdrag
- Maskning: Ingen (Open Label)
Vapen och interventioner
Deltagargrupp / Arm |
Intervention / Behandling |
|---|---|
|
Experimentell: Forced-Air Warming Group
Participants received routine passive warming measures plus active warming using a forced-air warming system during the perioperative period.
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Active perioperative warming using a forced-air warming system initiated 30 minutes before anesthesia induction and continued until transfer to the post-anesthesia care unit.
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Aktiv komparator: Routine Warming Group
Participants received routine passive warming measures including warmed fluids, operating room temperature control, and cotton blanket coverage.
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Routine perioperative warming measures including warmed intravenous fluids, warmed irrigation fluids, operating room temperature control, and cotton blanket coverage.
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Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
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Incidence of Inadvertent Perioperative Hypothermia
Tidsram: From anesthesia induction to 90 minutes after anesthesia completion
|
The proportion of participants with core body temperature below 36.0°C at any perioperative time point.
|
From anesthesia induction to 90 minutes after anesthesia completion
|
Sekundära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
Postoperative Shivering
Tidsram: From the end of surgery to 24 hours postoperatively
|
Incidence and severity of postoperative shivering assessed using a 0-4 shivering scale.
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From the end of surgery to 24 hours postoperatively
|
|
Emergence Agitation
Tidsram: From 30 minutes after surgery to 2 hours postoperatively
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Incidence and severity of emergence agitation assessed using the Richmond Agitation-Sedation Scale (RASS, -5 to +4), where higher positive scores indicate greater agitation.
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From 30 minutes after surgery to 2 hours postoperatively
|
|
Anesthetic Recovery Time
Tidsram: From the end of anesthesia to 2 hours postoperatively
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Recovery outcomes including awakening time, extubation time, and PACU length of stay.
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From the end of anesthesia to 2 hours postoperatively
|
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Intraoperative Blood Loss
Tidsram: During surgery
|
Estimated blood loss recorded during the surgical procedure.
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During surgery
|
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Postoperative Complications
Tidsram: From the end of surgery to 30 days postoperatively
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Incidence of postoperative complications including delirium, nausea and vomiting, cardiac adverse events, skin burns, and surgical site infection.
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From the end of surgery to 30 days postoperatively
|
Samarbetspartners och utredare
Sponsor
Utredare
- Huvudutredare: Danling Fang, RN, Shanghai 6th People's Hospital
Studieavstämningsdatum
Studera stora datum
Studiestart (Faktisk)
Primärt slutförande (Faktisk)
Avslutad studie (Faktisk)
Studieregistreringsdatum
Först inskickad
Först inskickad som uppfyllde QC-kriterierna
Första postat (Faktisk)
Uppdateringar av studier
Senaste uppdatering publicerad (Faktisk)
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senast verifierad
Mer information
Termer relaterade till denna studie
Nyckelord
Andra studie-ID-nummer
- TKA-FAW-2018-01
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