In the preoperative period, patients with a body temperature of 36°C-37°C one hour before surgery will be included in the sample. Postoperatively, upon arrival from the operating room to the intensive care unit, which has a humidity range of 55%-65% and a temperature range of 22°C-25°C, will be safely transferred to a single-bed room, monitored, and wiped down. After ensuring personal hygiene, the patient will be covered with a 160x220cm cotton quilt. The heating device hose will be placed inside the bed from the side of the bed. The electric heater will be operated at 38°C (Medium) for 120 minutes, 15 cm from the patient's body. Routine treatment and care will then be administered. Vital signs, shivering level, and temperature perception will be recorded on the patient's follow-up form at 0, 15, 30, 45, 60, 90, and 120 minutes postoperatively.

In the preoperative period, patients with a body temperature of 36°C to 37°C one hour before surgery will be included in the sample. In the postoperative period, the intensive care room, which has a routine humidity range of 55%-65% and a temperature of 22°C to 25°C, will be heated to the upper limit of the intensive care room temperature range, 27°C, with an electric heater half an hour before the operation. After ensuring personal hygiene, the patient will be safely transferred to the bed in the single room, monitored, and wiped down. After ensuring personal hygiene, the patient will be covered with a 160x220cm cotton quilt. The heating device hose will be placed inside the bed from the edge of the bed. The electric heater will be operated at 38°C (Medium Level) for 120 minutes, 15cm from the patient's body. Routine treatment and maintenance will be administered. Then, the vital signs, pain, shivering level, and temperature perception will be recorded in the patient follow-up form a

The rooms of the intervention group patients will be heated before they come to intensive care and the temperature of the room will be increased.

The Thermal Comfort Scale (TKS) is a Likert-type scale developed by Wagner and colleagues in 2006. Although it was developed to assess the thermal comfort perception of preoperative patients, the authors state that it is also suitable for evaluating conscious postoperative patients. The scale assesses the patient's thermal comfort perception based on self-report. The scale consists of 13 items, each scored from 1 to 6. A higher score indicates a higher thermal comfort perception.

The Temperature Comfort Perception Scale is a visual analog scale developed by Wagner and colleagues to objectively assess patients' perception of temperature comfort. It is scored based on patient self-reporting from 0 (extremely cold) to 10 (extremely hot), with a score of 5 representing optimal temperature comfort.

This study planned to use a 10-point pain scale, with 0 representing no pain and 10 representing the most unbearable pain. In the study, patients will be asked to select the number that best describes their pain intensity.

Tremor Level Assessment Scale (TRS) This form, used to assess patients' tremor levels, was developed based on literature. The form was developed using the studies of Badjaita et al. (2008) and May et al. (2011), and was based on criteria for determining the level of tremor based on observation. Tremor level will be assessed based on observation as follows: 0 (absent), 1 (mild; tremor localized only to the neck and/or thorax), 2 (moderate; tremor in the neck, thorax, and upper extremities), and 3 (severe; tremor in the trunk, upper, and lower extremities).