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Prevalence of male and female patterns of early ventricular repolarization in the normal ECG of males and females from childhood to old age

Borys Surawicz, MD, MACC^*,* and Sanjay R. Parikh, MD, FACC

^* Indiana Heart Institute, Indianapolis, Indiana, USA
The Care Group, St. Vincent Hospital, Indianapolis, Indiana, USA

View larger version (34K): [in a new window]   Figure 2 Pattern distribution in different age groups of females and males. See text. ECG = electrocardiograms.

View larger version (31K): [in a new window]   Figure 1 Method of pattern determination in representative electrocardiogram complexes of lead V3. The two horizontal lines represent the Q–Q line and the line parallel to the Q–Q line at the level of the J point, respectively. The arrow marks the J point; the short vertical line marks the point 60 ms after the J point; the oblique line connects the J point with the above point (see text). (A) Female pattern: the J point is at the level of the Q–Q line, and the ST angle is 19°. (B) Male pattern: the J point is >0.1 mV above the Q–Q line, and the ST angle is 36°.(C) Variant of the male pattern in which the T-wave ascends at the J point; the J point is >0.1 mV above the Q–Q line, and the angle between the line parallel to the Q–Q line at the level of the J point and the ascent of the T-wave is 29°. (D) Indeterminate pattern: the J point is >0.1 mV above the Q–Q line, and the ST angle is 15°.