The case history of a patient suffering from attacks of cardiac asystole with syncope is described. On superficial examination the condition appeared to be one of Stokes-Adams disease; electrocardiographic tracings, however, showed that there was no delay or block in the conducting system of the heart, but a persistent sinus bradycardia (about 24 beats a minute) interrupted by complete asystole for periods of at least 22 seconds. No report of a similar case has been found. The effect of exercise and various drugs upon the heart rate is described and the underlying basis of the condition discussed.
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R. S. B. Pearson (1945) studied this question.