The Effect of Active Warming During General Anaesthesia on Postoperative Body Temperature, Shivering and Thermal Comfort

Summary

Adult patients who undergo surgery under general anaesthesia often experience inadvertent perioperative hypothermia. This common problem has serious consequences such as surgical site infection, coagulopathy, increased need for transfusion, altered drug metabolism and adverse cardiac events. Perioperative guidelines recommend warming the patient with a forced-air warming device and administering warmed intravenous and irrigation fluids to prevent intraoperative hypothermia. This study aims to investigate the effects of individual and combined use of intraoperative forced-air warming and warmed intravenous and irrigation fluids on postoperative body temperature, shivering, thermal comfort, pain, nausea and vomiting in adult patients receiving general anaesthesia.

Conditions

• Nursing Caries
• Postoperative Pain
• Postoperative Nausea and Vomiting

Interventions

OTHER

FAW

After the induction of anaesthesia, for patients assigned to groups 1 and 3, the cover of the forced-air warming device (Bair HuggerTM Warming Unit, Model 505, Augustine Medical Inc., Eden Prairie, MN, USA) will be covered over the patient, with the surgical site exposed, and the temperature adjustment of the device will be set to the maximum (43°C). Then, the temperature will be adjusted to maintain a patient temperature of at least 36.5°C. When the patient's body temperature reaches 37°C, the device will be turned off and it will be restarted at a temperature measurement of \<36.5°C.

OTHER

Warmed fluids

In patients assigned to groups 2 and 3, intraoperative IV (Automer blood/fluid warming system, Acemedikal, South Korea) and irrigation fluids (Enthermic Warming Cabinet 1002W, Poland) will be given by heating to 37°C in a thermostatically controlled heating cabinet.

OTHER

Combination

After the induction of anaesthesia, for patients assigned to groups 3, the cover of the forced-air warming device (Bair HuggerTM Warming Unit, Model 505, Augustine Medical Inc., Eden Prairie, MN, USA) will be covered over the patient, with the surgical site exposed, and the temperature adjustment of the device will be set to the maximum (43°C). Then, the temperature will be adjusted to maintain a patient temperature of at least 36.5°C. When the patient's body temperature reaches 37°C, the device will be turned off and it will be restarted at a temperature measurement of \<36.5°C. In patients assigned to groups 3, intraoperative IV (Automer blood/fluid warming system, Acemedikal, South Korea) and irrigation fluids (Enthermic Warming Cabinet 1002W, Poland) will be given by heating to 37°C in a thermostatically controlled heating cabinet.

OTHER

Control

The patients assigned to group 4 will only receive 'routine care'. They will not be given intraoperative forced-air warming or heated IV and irrigation fluids.

Sponsors & Collaborators

• Bozok University

  lead OTHER

Study Design

Allocation

RANDOMIZED

Purpose

PREVENTION

Masking

SINGLE

Model

FACTORIAL

Eligibility

Min Age

18 Years

Max Age

80 Years

Sex

ALL

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2020-12-18

Primary Completion

2021-09-18

Completion

2021-12-18

Countries

• Turkey (Türkiye)

Study Locations