Results 121 to 130 of about 1,623 (161)
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High frequency phonocardiography
The American Journal of Cardiology, 1961Abstract A systematic study of the high frequency components of the heart sounds and murmurs was made by means of a new standardized and calibrated phonocardiograph provided with a variable band pass filter. The frequency bands 500–1000 c.p.s. and higher were particularly studied but comparison was also made with the vibrations found in lower bands.
A A, LUISADA, G, DI BARTOLO
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California medicine, 1998
In phonocardiography the second heart sound is important in appraisal of congenital heart disease and pulmonary hypertension because it reflects the duration of right ventricular systoles. The systolic murmur in patients with intracardiac shunt decreases as pulmonary hypertension develops, and may eventually disappear completely as the pulmonary ...
E G, DIMOND, A, BENCHIMOL
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In phonocardiography the second heart sound is important in appraisal of congenital heart disease and pulmonary hypertension because it reflects the duration of right ventricular systoles. The systolic murmur in patients with intracardiac shunt decreases as pulmonary hypertension develops, and may eventually disappear completely as the pulmonary ...
E G, DIMOND, A, BENCHIMOL
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Clinical calibration in phonocardiography
American Heart Journal, 1954Abstract 1. 1. The need for a sound calibration with a signal which varies in accordance with the manifold causes of error of clinical phonocardiography is emphasized. 2. 2. A new, simple device is described. It is based on the production of a sound vibration of known amplitude and frequency over the chest wall and its transmission to the ...
A A, LUISADA, G, GAMNA
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Phonocardiography and pulse tracings
International Journal of Cardiology, 1983The use of phonocardiography and pulse tracings has declined in recent years, no doubt in part due to the impact of newer, more sophisticated cardiac diagnostic methods. These time-honored techniques, however, still have a great deal to offer besides merely confirming auscultatory signs or serving as a teaching tool.
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The expanding horizon of phonocardiography
Archiv für Kreislaufforschung, 1960(1) Phonocardiography is defined and the various bands of the vibratory spectrum are described, both from a physical standpoint and in relation to clinical methods of observation. Methods employed by various authors for recording phonocardiograms are compared. A new calibrated phonocardiograph is described.
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Intracardiac phonocardiography
The American Journal of Cardiology, 1964B L, SEGAL, P, NOVACK, H, KASPARIAN
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Standardization of phonocardiography
The American Journal of Cardiology, 1965K, HOLLDACK, A A, LUSISADA, H, UEDA
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Intracardiac phonocardiography
American Heart Journal, 1954K, YAMAKAWA +5 more
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