Results 201 to 210 of about 4,220 (250)
Application of Acoustic Cardiography in Assessment of Cardiac Function in Horses with Atrial Fibrillation Before and After Cardioversion. [PDF]
Animals (Basel)Schneider MJ +6 more
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Phonocardiography with a smartphone [PDF]
Physics Education, 2017 When a stethoscope is placed on the chest over the heart, sounds coming from the heart can be directly heard. These sound vibrations can be captured through a microphone and the electrical signals from the transducer can be processed and plotted in a phonocardiogram.
Raimund Girwidz +2 more
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American Heart Journal, 1956
1. 1. Problems dealing with the registration of either apical or basal diastolic murmurs of poor magnitude are discussed. Current methods of phonocardiography are reviewed. 2. 2. Eight normal subjects and thirty abnormal cases were studied by means of a variable band-pass filter with additional amplification.
C. Aravanis, L. Richmond, A.A. Luisada
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1. 1. Problems dealing with the registration of either apical or basal diastolic murmurs of poor magnitude are discussed. Current methods of phonocardiography are reviewed. 2. 2. Eight normal subjects and thirty abnormal cases were studied by means of a variable band-pass filter with additional amplification.
C. Aravanis, L. Richmond, A.A. Luisada
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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 ...
Aldo A. Luisada +3 more
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Phonocardiography and Electrocardiography with a Smartphone
2020 43rd International Convention on Information, Communication and Electronic Technology (MIPRO), 2020Phonocardiogram, a graphic recording of auscultatory findings of the cardiac sound vibrations, was acquired through an add-on to a stethoscope: a microphone was inserted into the stethoscope tube and connected to a smart device. Phonocardiographic data were synchronised to electrocardiogram, a recording of cardiac electrical activity, that was obtained
Viktor Avbelj, Maja Brloznik
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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.
Aldo A. Luisada, Giuliano di Bartolo
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The renaissance of phonocardiography
Journal of Chronic Diseases, 1960Abstract It has been suggested that cardiac auscultation and phonocardiography are presently in a period of renewed investigation. The renaissance of phonocardiography has brought forth new and valuable information and promises to yield more with time.
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The American Journal of Cardiology, 1959
Abstract The general laws of auscultation and the basic principles and scope of phonocardiography are analyzed and discussed with particular reference to instrumentation. The characteristics and responses of the various types of transducers (microphones), equalizer or filter circuits, amplifiers, and recording oscillographs are presented; they must ...
Aldo A. Luisada +2 more
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Abstract The general laws of auscultation and the basic principles and scope of phonocardiography are analyzed and discussed with particular reference to instrumentation. The characteristics and responses of the various types of transducers (microphones), equalizer or filter circuits, amplifiers, and recording oscillographs are presented; they must ...
Aldo A. Luisada +2 more
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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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Diseases of the Chest, 1969
The data of a clinical case of ventricular aneurysm are reported. While auscultation failed to reveal unusual murmurs, phonocardiography revealed bizarre diastolic murmurs and more conventional systolic murmurs. Discussion of these murmurs follows.
Aldo A. Luisada, B. Argano
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The data of a clinical case of ventricular aneurysm are reported. While auscultation failed to reveal unusual murmurs, phonocardiography revealed bizarre diastolic murmurs and more conventional systolic murmurs. Discussion of these murmurs follows.
Aldo A. Luisada, B. Argano
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