Effects of age, sex, and body habitus on QRS and ST-T potential maps of 1100 normal subjects.

摘要: Body surface potential maps provide more detailed regional cardiac electrophysiologic information than the standard electrocardiogram. We performed a large-scale study of normal population to form comparison base for evaluation clinical utility this technique. analyzed body from 1113 subjects 10 80 years old detail map features as function age, sex, and habitus. Maps were by visual inspection spatial temporal data reduction technique that allows statistical features. On average, both QRS ST-T potentials decreased with increasing age. Potential pattern distributions remained constant 40 years. Beyond age 40, larger numbers showed depolarization patterns consistent delayed activation left anterior fasicle, despite 12-lead electrocardiograms. Only minor amplitude distribution differences noted when male female compared within groups similar Male consistently greater average T amplitudes. Slender habitus was associated horizontal "zero" line. In over there extensive low-level negative recorded precordium during ST segment in men. This defines range large clinically provides basis qualitative patients disease.