Search results
15 mar 1996 · With the advent of numerous new diagnostic modalities, however, especially ultrasonic imaging and Doppler techniques, cardiac auscultation is receiving less emphasis in teaching and practice. 1 To compound this problem further, phonocardiography, ie, the graphic recording of heart sounds, which had served as a valuable means for teaching and ...
Heart murmurs are generated as a result of turbulence in blood flow through narrow cardiac valves or reflow through the atrioventricular valves. Congenital heart defects or acquired heart valve diseases are frequently the source of abnormal heart murmurs.
Pansystolic murmurs in patients with mitral and tricuspid valve regurgitation or ventricular septal defect may be confirmed by phonocardiography. They are caused by a flow of blood from a chamber or vessel that is at a higher pressure throughout systole than the receiving vessel or chamber.
Phonocardiography is a diagnostic technique that graphically records cardiac acoustic phenomena. 10 Visualization of heart sounds may help in understanding cardiac events . A visual record may also help an inexperienced listener recognize and classify auscultatory findings.
15 lip 2024 · This work investigates whether inclusion of the low-frequency components of heart sounds can increase the accuracy, sensitivity and specificity of diagnosis of cardiovascular disorders. We standardized the measurement method to minimize changes in signal characteristics.
Phonocardiograms are visual representations of heart sounds that have been used for diagnosis [4, 5] and have been advanced as a curricular approach to teach students the typical shape, timing, and duration of heart murmurs that correspond to specific disease processes [6, 7].
The phonocardiogram (PCG) detects and records heart sounds, the sounds made by the various cardiac structures pulsing and moving blood. The sound is caused by the acceleration and deceleration of blood and turbulence developed during rapid blood flow.
