Intracardiac phonocardiography. Description of a new simplified system.

Intracardiac phonocardiography in ventricular septal defect.

It has been demonstrated that intracardiac phonocardiography provides precise localization of the source of cardiovascular sounds. Can this technic be of practical help in the diagnosis of small or complicated ventricular septal defects? Is a ventricular septal1 defect ever silent? What mechanisiims are responsible for the diastolic mlurmlurs in ventricular septal defect? In an attempt to answe...

Intracardiac Phonocardiography in Ventricular Septal Defect

It has been demonstrated that intracardiac phonocardiography provides precise localization of the source of cardiovascular sounds. Can this technic be of practical help in the diagnosis of small or complicated ventricular septal defects? Is a ventricular septal1 defect ever silent? What mechanisiims are responsible for the diastolic mlurmlurs in ventricular septal defect? In an attempt to answe...

Intracardiac phonocardiography in mitral and aortic valve lesions.

Intracardiac phonocardiography in man.

This paper describes a new method for the detection of sound from within the heart in man. It employs the technic and equipment of underwater listening developed and use(l by the Navy in antisubmarine warfare. Records are shown to illustrate the localization of heart sound production to an extent not possible by phonocardiograms from the chest wall. The technic has proved helpful in the evaluat...

Intracardiac phonocardiography: correlation of mechanical, acoustic and electric events of the cardiac cycle.

A TTEA1 PTS to rec(ord heart souinds and miurmnurs at their site of origin are not new. For obvious reasons, sounds picked up fromt the surface of tlhe, thorax are not a true represetltatioil of the actual vibrations of the cardiac valves aiid walls. rThm1s, physiologists have attempted to uiov' their recordingl instrunient closer to the souiid source by placing microl)holles in the e ;ophagus,...