Posted: August 14th, 2022
Reducing Perioperative Hypothermia Through Warming Methods
Reducing Perioperative Hypothermia Through Warming Methods
Perioperative hypothermia is a common and preventable complication that affects many patients undergoing surgery. It is defined as a core body temperature below 36°C during the perioperative period, which includes the preoperative, intraoperative, and postoperative phases. Perioperative hypothermia can have adverse effects on patient outcomes, such as increased blood loss, wound infection, cardiac events, and prolonged hospital stay. Therefore, it is important to implement effective warming methods to prevent and treat perioperative hypothermia.
Warming methods can be classified into two categories: active and passive. Active warming methods involve the use of external devices that deliver heat to the patient, such as forced-air warmers, fluid warmers, electric blankets, and radiant warmers. Passive warming methods involve the use of insulation materials that reduce heat loss from the patient, such as cotton blankets, surgical drapes, and reflective blankets. Both active and passive warming methods have been shown to reduce the incidence and severity of perioperative hypothermia.
However, not all warming methods are equally effective or appropriate for every patient or surgical procedure. Some factors that should be considered when choosing a warming method are:
– The type and duration of surgery
– The patient’s risk factors for hypothermia, such as age, body mass index, comorbidities, and medications
– The availability and cost of warming devices and materials
– The potential complications and contraindications of warming methods, such as burns, infection, interference with monitoring devices, and fire hazards
According to the current guidelines from the American Society of Anesthesiologists (ASA), the following recommendations can be made for the prevention and treatment of perioperative hypothermia:
– Preoperatively, patients should be assessed for their risk of hypothermia and informed about the benefits of warming methods.
– Preoperatively, patients should be kept in a warm environment and provided with adequate clothing and blankets.
– Intraoperatively, patients should be warmed with an active warming method unless contraindicated. The choice of active warming method should depend on the type and duration of surgery, the patient’s condition, and the availability of devices.
– Intraoperatively, patients should also be covered with passive warming materials to minimize heat loss from exposed body parts.
– Postoperatively, patients should be monitored for their core body temperature and warmed with an active or passive method until normothermia is restored.
By following these recommendations, perioperative hypothermia can be reduced and patient outcomes can be improved. Perioperative hypothermia is a preventable complication that can have serious consequences for patients undergoing surgery. Therefore, it is essential to implement effective warming methods to maintain normothermia throughout the perioperative period.
Works Cited
Horn E-P., Bein B. “The pathophysiology of perioperative hypothermia.” Best Practice & Research Clinical Anaesthesiology 22.4 (2008): 659-668.
Sessler D.I. “Perioperative thermoregulation and heat balance.” The Lancet 387.10038 (2016): 2655-2664.
Sun Z., Honar H., Sessler D.I., et al. “Intraoperative core temperature patterns, transfusion requirement, and hospital duration in patients warmed with forced air.” Anesthesiology 124.2 (2016): 276-285.
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