Body Temperature Changes, Hypothermia, Hypothermia, Accidental, Hypothermia Due to Anesthetic, Hypothermia Following Anesthesia
Conditions
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.
Detailed description
Inadvertent perioperative hypothermia is a well known perioperative complication. The behavioural response to hypothermia is the most powerful protective tool, more effective than any autonomic response, and is obviously removed in the operative setting. Anesthesia alters thermoregulation by profoundly changing the thresholds for vasoconstriction and shivering, making patients vulnerable to the adverse outcomes related to mild hypothermia. Inadvertent postoperative hypothermia can occur in up to 70% of surgical patients. It is defined as a core temperature below 36°C (96.8°F). The aim of this study was to determine if prewarming with an active warming system for 20 minutes preoperatively could prevent postoperative inadvertent hypothermia.
Interventions
DEVICE3M Bair Paws Warming System
20 minutes of prewarming immediately pre-operatively using 3M Bair Paws warming system
Sponsors
Michael Garron Hospital
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
SINGLE (Outcomes Assessor)
Eligibility
Sex/Gender
FEMALE
Age
16 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* ASA I-III * undergoing elective laparoscopic gynecological surgical procedures * expected duration \>60 minutes * BMI 18-45
Exclusion criteria
* Current fever (temperature\>38.1°C) * active endocrine disorders were
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Oral temperature immediately postoperatively | Immediately post-operatively | Immediate postoperative oral temperature on admission to the post-anesthetic care unit. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Oral temperature 30 minutes postoperatively | 30 min after admission to post-anesthetic care unit | Oral temperature 30 minutes after admission to the post-anesthetic care unit. |
| Oral temperature at discharge from post-anesthetic care unit | Discharge from post-anesthetic care unit (average 99 minutes) | Oral temperature upon discharge from the post-anesthetic care unit. |
| 11-point Pain score | 30 min after admission to post-anesthetic care unit | 11-point VAS pain score postoperatively measured 30 minutes after admission to the post-anesthetic care unit |
Countries
Canada
Outcome results
None listed