Measurement of physiological responses to various stress during oral surgery. In relation to cardiovascular disease.

Physiological responses during tooth extraction, including plethysmogram, GSR, heart rate, blood pressure and RPP, were measured, and the obtained data were recorded and analyzed by computer. As the subjects, 127 healthy adults, 67 patients with hypertension and 41 patients with heart disease were used.2. When the amounts of stress were compared according to the treatments used, plethysmogram and GSR were found to be larger at the time of anesthesia and tooth extraction and during a preoperative period; heart rates increased after anesthesia; changes in blood pressure were larger at the time of anesthesia and tooth extraction.3. When the amounts of stress were compared according to the subjects' ages, responses with plethysmograph were large in the age group of 39 years or below, but were small in the age group of 60 years or above. Similar results were seen with GSR. Heart rates were fewer in aged patients than in younger patients, and the aged patients also showed smaller heart rate changes. Blood pressure was the highest and showed the greatest changes in the age group of 40-50 years.4. In comparison of the diseased group with the healthy group, plethysmograms had larger waves in the diseased group, and this group showed poor responses. Changes in heart rates were larger in the diseased group at the time of tooth extraction. The diseased group showed greater changes in blood pressure during a preoperative period and at the time of anesthesia and tooth extraction than did the healthy group. RPP was larger in the deseased group than in the healthy group, and changes in RPP were higher at the time of anesthesia and tooth extraction.5. Plethysmogram and GSR well reflected mental responses, while the other parameters well reflected cardiovascular dynamics.