PubMed HealthSearch

Biomedical subjects

M Eicher

Publications and source records attributed to M Eicher.

6 recordsLinked to original sources

[Blind date].

Explore the source record for details and available documents.

Adaptation, Psychological

Effects of hydration on mitral valve prolapse.

We investigated the effect of hydration on mitral valve prolapse (MVP). Ten subjects with documented diagnosis of MVP were studied before and after oral hydration with 1 L of fluid. Increased weight and cardiac output were present after hydration. Results showed that all 10 subjects with diagnosis of MVP before hydration continued to have MVP after hydration; however, subtle changes were detected, especially on auscultation. Seven of 9 subjects (with cardiac examination recorded before and after hydration) had auscultatory findings of MVP before hydration. No detectable auscultatory change after hydration was present in one subject; in six subjects a loss of either a click or a murmur was detected after hydration. All subjects had echocardiographically detected MVP before hydration; evidence of MVP on two-dimensional or M-mode examination persisted after hydration in all 10 subjects. Minor changes in the echocardiographic examination (M-mode n = 2, Doppler n = 1) were detected in three subjects. Thus we found that hydration of subjects with MVP did not alter the overall diagnosis; however, changes occurred, especially on auscultation. This suggests that alterations in hydration may affect auscultatory expression of MVP and could explain, in part, the variable auscultatory findings in patients with MVP.

Adult

Mild dehydration induces echocardiographic signs of mitral valve prolapse in healthy females with prior normal cardiac findings.

This study was designed to investigate the hypothesis that mitral valve prolapse (MVP) can be induced after diuresis in women without the abnormality who have characteristic body habitus. Fifteen tall, slim, healthy female volunteers with a normal cardiac findings, echocardiogram, and history were investigated after mild diuresis with furosemide and after placebo. All subjects lost weight after furosemide and placebo administration; but mean weight loss was significantly greater after furosemide administration than after placebo administration. Echocardiography showed MVP in none of the 15 patients before treatment, in seven after administration of placebo, and in seven after administration of furosemide. Coaptation point prolapsed superior to the anulus in seven subjects with echocardiographically determined MVP. Left ventricular end-diastolic dimensions decreased significantly after placebo or furosemide administration in subjects in whom MVP developed compared with the measurement in those in whom MVP did not develop. Murmurs characteristic of MVP disappeared in all four rehydrated subjects and echocardiographic changes resolved in two of the five rehydrated subjects. Thus echocardiographically determined MVP can be induced by mild dehydration in women with phenotypic body habitus of MVP; changes may resolve with rehydration. Results suggest an explanation for variable physical examination findings in persons with MVP.

Adult