[Continuous observation of the electrocardiogram following experimental cerebral hemorrhage]

An intracranial injection of 5 ml of heparinized autoblood was made into 14 healthy domestic dogs. Model of experimental cerebral hemorrhage was made. 7 dogs of a control group were not injected with the blood. Electrocardiograms (ECG) were recorded before operation, 6 hours after operation and once a day from the first to the seventh day after operation in order to observe the changes of ECG after cerebral hemorrhage. The result indicated that 11 dogs (78.57%) among the dogs of the hemorrhage group had abnormal ECG after operation, but only 2 (28.57%) of the 7 dogs of the control group were so. Comparison between the two groups showed significant difference, P less than 0.01. Abnormal ECG displayed the earliest during the postoperation 6 hours. These abnormal phenomena, mainly obvious in T wave changes and prolongation of the Q-T interval, were transient and began to disappear on the third day.