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A patient warmer is a medical device used to help maintain or raise a patient’s body temperature. It may use forced warm air, conductive heating, circulating water, warming blankets, or other temperature-management methods. Patient warmers are commonly used before, during, and after surgery, in recovery areas, and in critical care. They are used under clinical supervision to reduce the risk of hypothermia.
read more about patient warmer ...A patient warmer is used when a patient is at risk of losing too much body heat. This can happen during anesthesia, surgery, trauma care, long procedures, exposure, or recovery from illness. Maintaining body temperature can support comfort and help reduce complications linked to perioperative hypothermia. The warming method depends on the patient’s condition, procedure, temperature, and care setting.
Forced-air warmers deliver heated air through a hose into a special warming blanket. Conductive systems warm the patient through a heated surface, pad, or blanket. Circulating water systems move warmed fluid through a pad or mattress. The device is adjusted and monitored so the patient warms safely without overheating or skin injury.
Common patient warmers include forced-air warming units, electric warming blankets, underbody warming mattresses, circulating water blankets, radiant warmers, and fluid-warming systems. Some are used for adults, while others are designed for infants or surgical patients. Disposable blankets or reusable accessories may be used depending on the system. The selected warmer should match the clinical goal and product instructions.
Patient warmers can cause burns, overheating, dehydration, skin injury, or equipment-related problems if misused. Forced-air hoses should not be used without the correct warming blanket because concentrated hot air can injure skin. Temperature, skin condition, device alarms, and placement should be checked during use. Redness, blistering, unexpected pain, high temperature, or device malfunction should be addressed promptly.
A warming blanket can be part of a patient warming system, but a patient warmer may also include a heater, hose, mattress, pad, or temperature-control unit.
Anesthesia, cool operating rooms, exposed skin, and long procedures can lower body temperature. Warming helps reduce perioperative hypothermia risk.
Yes. Burns can happen if the device is misused, placed incorrectly, too hot, or used on fragile or poorly monitored skin.
Trained clinical staff set up and monitor the warmer according to the device instructions and the patient’s temperature needs.
Hypothermia: prevention and management in adults having surgery. National Institute for Health and Care Excellence. https://www.nice.org.uk/guidance/cg65/chapter/Recommendations. Date Accessed June 18, 2026.
Strategies for perioperative hypothermia management. PMC. https://pmc.ncbi.nlm.nih.gov/articles/PMC11684272/. Date Accessed June 18, 2026.
Forced-Air Warming and Resistive Heating Devices. Updated Perspectives. PMC. https://pmc.ncbi.nlm.nih.gov/articles/PMC6258796/. Date Accessed June 18, 2026.
Thermal burn injury associated with a forced-air warming device. PMC. https://pmc.ncbi.nlm.nih.gov/articles/PMC3337390/. Date Accessed June 18, 2026.
Misuse of Forced-Air Warming Devices Causes Burns. Anesthesia Patient Safety Foundation. https://www.apsf.org/article/misuse-of-forced-air-warming-devices-causes-burns/. Date Accessed June 18, 2026.