Abstract
The survey on the normal values of electrocardiograms of the Japanese was conducted by Committee on the Criteria of Heart Diseases and Electrocardiogram. Electrocardiographic records from 1, 329 Japanese people over 15 years of age, who were considered to be clinically normal, were analyzed according to age and sex. Among the various electrocardiographic component parts, 14 items were measured in the standard leads, unipolar extremity leads and precordial leads. The mean value, maximum value and minimum value were listed according to the items, age and sex. The standard deviation was calculated in some items. The normal range of electrocardiographic items and their difference with sex and age were discussed.
