전신마취 수술후 정상체온 회복을 위한 열요법에 관한 연구 = A Study on the Effect of the heat therapy in the post operative Hypothermia under the general anesthesia.

다국어 초록 (Multilingual Abstract)

Human beings are homeothermic and normally their core temperature, either by increasing heat production or by heat dissipation.
But heat loss during general anesthesia occurs because anesthetics depress and render inefficient the temperature regulating mechanisms of the body. Cutaneous vasoconstricton is inhibited by anesthesia, while muscle relaxants prevent chilling or shivering for heat production.
Also, heat loss during general anesthesia is influenced not only by low environmental temperature and humidify but also by the infusion of not warmed fluid and blood, ventilation with cold gases and the exposure of body cavities. Hypothermia defined as core temperature below 36℃ has cardiovascular, neurologic, hematologic, immunologic and metabolic effects. It can also affect body fluid and electrolyte blance. Specially, hypothermia in the period after surgery may be responsible for excessive shivering with increase oxygen consumption and contributes to arterial hypoxemia.
The duration of postsurgery hypothermia is directly related to patient mortality.
The purpose of this study was on to contribute baseline data for further preventive and therapeutic nursing interventions through research related toward temperature regulation and relief of postsurgery hypothermia discomfort. The study was to determine their actual temperature change during surgery and the time needed for return to normal temperature after surgery.
The study design was a quasiexperimental non-equivalent control group post-test
design included twenty-three for each group patients of experimetal group and a control group, who received surgery under the general anesthesia.
Data collection was during the period from July, 26, 1998 to September, 10, 1998 at the operation room at one University Hospital using tympanic membrane temperature sixty-nine subjects, ranging from 20 to 60 years of age were selected from a patient scheduled for surgery body temperature were recorded every fifteen minutes after intubation by measured tympanic membrane temperature and recorded to recovery time for normal body temperature. Collected data were analyzed by means of SAS, ANOVA, and Ducan's multiple range test.
The results of the study as follows.
The research supported partially the main hypothesis "The recovery time to the normal temperature would depend on what kind of heat treatment, such as heat lamp treatment, electric blanket treatment and blanket treatment, is applied to the hypothermia patient after the surgical operation.
The first subordinate hypothesis was supported: the group treated by heat lamp would have shorter recovery time to the normal temperature than one by blanket.
Then second subordinate hypothesis was supported faintly: the group treated by electric blanket would have shorter recovery time to the normal temperature than one by blanket.
The time difference was appeared to reach the normal temperature between electric blanket treated group and blanket treated group. But it did not a notable meaning at all.
The third subordinate hypothesis was supported faintly: the group treated by heat lamp would have shorter recovery time to the normal temperature than one by electric blanket.
The time difference was appered to reach the normal temperature between heat lamp treated group and electric blanket treated group. But it did not a notable meaning at all.
As the study result was showned above, among heat treatments on recovery room, heat lamp treatment is the most effective application method for the patient to come back to normal temperature after surgical operation. Therefore, for the fast recovery of patients after operation, patients should be treated by proper heat treatment to maintain the body temperature and to prevent hypothermia on the recovery room with the temperature assesment. Also the research on such treatment should go on continuously.