Abstract: A thermal retention hood for reducing heat loss from a patient's head during and following surgery includes an enclosure configured to cover the face and head of the patient, and configured to retain heat within the enclosure. The enclosure is at least partially transparent, to give a practitioner visual access to a patient's face. The hood further includes a scored line in the enclosure in a position corresponding to the patient's nose and mouth, a second scored line surrounding a region of the enclosure corresponding to the location of the patient's face, and a strap configured to secure an open end of the enclosure around the patient's neck. The hood may also include an absorbent pad within the enclosure, positioned to cover a portion of the back of the patient's head to absorb excess moisture.