Phonocardiography is an old and efficient technique for assesing the condition of the heart during cardiac cycles. Through auscultation, doctors can determine various abnormalities of the heart by listening. Is there any resources addressing the acoustic propagation of these mechanical waves through the human tissue towards the boundaries of the skin?
Simple tool is to assess wave propagation of cardiac activity is ECG .P wave -Atrial Depolarisation QRS- Ventricular Depolarisation and T wave - Ventricular repolarization
Take a look at the article in AHA journal, Circulation research, Vol XIV, May 1964, p. 426-435. by JJ Faber, MB, Phd. "Origin and conduction of Mitral sound in the heart"
Evidence based article on AHA site or circulation journal iare sufficient enough
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