Key result
Normal kinetocardiography yields consistent waveforms and timing intervals in ~59% of healthy young men.
Cross-Sectional (n=51)
Descriptive normal KCG patterns leave open any modern diagnostic role; hypothesis-generating for noninvasive precordial motion assessment.
The beating heart produces low frequency movements of the anterior chest wall.If these movements are recorded with an externally fixed pick-up device a kinetocardiogram (KCG) (Eddleman et al., 1953) is obtained.The curve is a displacement record of the absolute movements and differs in this respect from tracings registered with pick-up devices resting directly upon the chest wall, e.g.apex cardiography (Marey, 1885; Luisada and Magri, 1952; Benchimol, Dimond, and Carson, 1961).The normal KCG is well defined.In 30 of 51 normal men between 16 and 30 years of age KCGs similar in shape, relative size of amplitude, and time intervals were found.Only minor deviations were present in the remaining 21 men (von Bertrab, Reist, and Schweizer, 1963).The normal KCG has the following characteristics (Fig. 1): small outward movement during atrial ISOMETRIC EJECTION CONTRACTION 'IF ATRIAL SYSTOLE I, ECG I KCG PCG r FIG.1.-The normal kinetocardiogram (see text).Arrow indicates start of the ejection period.
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Schweizer et al. (1965) conducted a cross-sectional in Healthy subjects (n=51). Kinetocardiography (KCG) was evaluated on KCG characteristics (shape, amplitude, time intervals). In 51 normal men aged 16 to 30 years, kinetocardiography showed consistent shape, amplitude, and time intervals in 30 subjects, with only minor deviations in the remaining 21.
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