Normal standards for amplitude of ballistocardiograms calibrated by force.
نویسنده
چکیده
منابع مشابه
A two-dimensional ballistocardiographic study of the relation of body size to ballistic amplitude in children.
Simultaneous longitudinal and transverse ballistocardiogranis were obtained from 20 normal boys and 20 normal girls ranging in age from 4 to 15 years. A highly significant correlation was found to exist between body surface area and the basal mean WJ amplitude. C ONSIDERABLE doubt has existed in regard to the value of the ballistocardio-gram for determining cardiac output. The formulas in use a...
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We describe a simple method of recording the direct body ballistocardiogram by means of a microscope and a powerful light source. The beam passes through a slit attached to the body, and the image of this moving slit is magnified by the microscope and focused on moving photographic paper. When a static force is applied to the body, the base line of the record is permanently displaced and so the...
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عنوان ژورنال:
- Circulation
دوره 11 6 شماره
صفحات -
تاریخ انتشار 1955