Abstract
The materials for this study were 160 cases, on which the EKG was studied at random at the Okura National Hospital for 1 year and 10 months between November 1968 and August 1970. The methods used were studies, which were divided into two groups of cases, showing the normal or abnormal EKG before the operation, and studies on each period of insufflating cannulation, operation and a wakening, etc.
As the result, the irregular pulse was observed during the cannulation in 10 cases out of the 101 normal cases (9.90%) and 3 cases out of the 59 abnormal cases (5.08%).
During the operation the occurrence of irregular pulse was observed most frequently compared with the cases of cannulation and awakening, namely, 15 cases out of 101 normal cases (14.5%) and 10 of 59 abnormal (19.94%).
The occurrence of irregular pulse during awakening was fewer than the former two: only 1 case in the normal group (0.99%) and 1 in abnormal (1.69%).
Contrary to our expectancy we could not observe remarkable difference between the normal and abnormal group in each period.
