Paediatric

TL;DR: The presence of clicks that move with posture and other manoeuvres altering the left ventricular end-diastolic volume is suggestive of a prolapsing posterior cusp of the mitral valve.

Abstract: and Three cases are described which were originally diagnosed as having ventricular septal defect, pulmonary stenosis, and innocent prae-cordial honk. These have been reinvestigated using pixie accelerometer, phonocardiographic techniques (Bew et al., 1971). All three have been shown to have clicks which move with posture, Valsalvas, and other manoeuvres altering the left ventricular end-diastolic volume. These features enable a diagnosis to be made of prolapsing posterior cusp of the mitral valve.