Heart sounds are produced from a specific cardiac event such as closure of a valve or tensing of a chordae tendineae. Many pathologic cardiac conditions can be diagnosed by auscultation of the ...

The second heart sound (S2) is produced by the closure of the aortic and pulmonic valves. The sound produced by the closure of the aortic valve is termed A2, and the sound produced by the closure ...

Audible atrial contractions were recorded in a case of rheumatic heart disease during atrial fibrillation and ... In atrial flutter, the atrial contraction sounds were synchronous with the "f" waves.

These observations demonstrate that the audible third and fourth heart sounds have a common origin in the ventricles and have the same temporal and hemodynamic relationships regardless of etiology.

Objective To examine the relationship between acoustic characteristics of the first and second heart sounds (S1 and S2) and underlying cardiac structure and haemodynamics in patients with isolated ...

Wearable heart sound devices represent a groundbreaking shift in cardiac care, offering continuous, non-invasive monitoring with the potential to revolutionise the prevention, diagnosis ...

Borjon, University of Houston assistant professor of psychology, is reporting in Proceedings of the National Academy of Sciences that a baby’s first sweet sounds and early attempts at forming words ...