Why the study?
Does high left atrial compliance prevent pulmonary artery pressure elevation in severe rheumatic mitral valve regurgitation?
Does high left atrial compliance prevent pulmonary artery pressure elevation in severe rheumatic mitral valve regurgitation?
This case highlights that high left atrial compliance can prevent pulmonary artery pressure elevation even in the presence of severe mitral valve regurgitation and a giant left atrium.
Answers are grounded in this paper and cite their sources.
High LA compliance may mask pulmonary hypertension in severe rheumatic MR; hypothesis-generating for prevalence and mechanisms.
BACKGROUND: Left ventricular diastolic dysfunction, with secondary atrial pressure elevation, is a well-known concept. On the contrary, effect of left atrial compliance on pulmonary pressure is rarely considered. CASE PRESENTATION: We report the echocardiographic case of a 9-year-old child who presented severe rheumatic mitral valve regurgitation with a giant left atrium, in contrast to a normal artery pulmonary pressure, testifying of the high left atrial compliance. CONCLUSION: Left atrial compliance is an important determinant of symptoms and pulmonary artery pressure in mitral valve disease.
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Marijon et al. (2006) studied this question.
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