Abstract
The prognosis of atrial infarction is much worse than ventricular infarction because of atrial arrhythmias and rupture of the atrial wall. Hence it would be important clinically to make an accurate diagnosis of atrial infarction. In view of the discrepancy as to the interpretation of electrocardiographic findings in an atrial infarction among workers, an attempt was made to find out possible relations between lesions and electrocardiographic responses to an experimental injury of the atria. The results are reported with discussion in the present paper.
