Thirty cases of atrial septal defect proved by cardiac catheterization, surgery, or post-morten examination have been investigated with the technic of intracardiac phonocar-diography, which provided precise localization of the source of heart sounds and murmurs. The site and mechanism of origin of the many auscultatory signs in uncomplicated atrial septal defect and in cases of Lutembacher's sy...

The clinical differentiation of the apical systolic murmurs arising at the mitral and aortic valves may be difficult. This is especially so when the murmur of aortic origin is audible only at the apex or is loudest at this site. Phonocardiography gives further help in that the murmur of aortic stenosis is diamond shaped and ends before the aortic second sound while that of mitral regurgitation ...

Background: Cardiac murmur and subsequently cardiac failure is one of the poor-performance causes in athletic horses. Attention to murmur character is vital during heart examination. Polo is a sport which demands very high stress on horses, which may result in more stress on cardiovascular system. Objectives: In this study we assume that high pressure on polo horses makes them more susceptible ...

The case reports of 186 intravenous drug abusers admitted over a three year period were studied. Nineteen had proven staphylococcal septicaemia. Echocardiography showed tricuspid vegetations in seven and aortic vegetations in two. Eighteen out of 19 had systolic murmurs, but only the two patients with aortic vegetations had diastolic murmurs. The chest x ray showed opacities in 10 patients (all...

The identification and interpretation of equine murmurs can be improved. In older horses, the two common degenerative valvular conditions are mitral and aortic regurgitation, which occur with approximate equal frequency. Mitral regurgitation produces a systolic murmur. These are often blowing in character. If the murmur occupies all of systole the pulse wave in a peripheral artery can be palpat...

OBJECTIVE To determine the prevalence of cardiomyopathy and the relationship between cardiomyopathy and heart murmurs in apparently healthy cats. DESIGN Cross-sectional study. ANIMALS 103 privately owned, apparently healthy domestic cats. PROCEDURES Cats were physically and echocardiographically examined by 2 investigators independently. Left ventricular wall thickness was determined via ...

Four patients had evidence that mitral valve prolapse was the etiology of isolated early systolic clicks that were "ejection" in timing, that is, within 80 msec of the first heart sound (S1). Phonocardiography demonstrated movement of the click closer to S, (three patients) with no change (three patients) or an increase in click amplitude (one patient) on inspiration. Earlier movement of systol...

Mitral valve prolapse (MVP) is generally understood to be the systolic displacement of an abnormally thickened, redundant mitral leaflet into the left atrium during systole.1 This valvular abnormality has been associated with mid-systolic clicks, late systolic murmurs, and serious complications such as bacterial endocarditis, severe mitral regurgitation, and sudden death.2 Unfortunately, our un...

Border electrokymograms of the cardiovascular silhouette in various views were obtained at approximately 1.0 cm. intervals in 28 subjects to determine the constancy and the specificity of the atrial border motion and to determine its ability to differentiate organic from functional apical systolic murmurs. Although a "plateau" curve previously reported as pathognomonic of organic mitral regurgi...