<原著>加齢と心機能 1.健康人の心拍出量

概要

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Cardiac output in supine position at rest was measured by the earpiece dye-dilution method with an automatic computer calibration of dye concentration, in 74 healthy persons aged 4 to 74 years. Cardiac output in the healthy persons decreased in parallel to aging. The mean value every ten years from the first decade to the eight decade was 5.73±1.59,4.66±1.01,4.24±0.75,3.97±0.69,3.94±0.61,3.94±0.69,3.23±0.36 and 3.04±0.50 1/min/m^2,respectively. Stroke index had a linearly reverse relationship with aging. The mean value every ten years was 66±16,63±12,60±12,60±8,58±12,55±6,52±4 and 46±10 ml/m^2,respectively. Peak concentration time increased in parallel to aging also. It is concluded that cardiac output and stroke volume are strongly dependent upon age in healthy persons, so that evaluation of these indices as parameters of cardiac function must be considered with the correction of age factor.
近畿大学の論文
1977-06-25