[Mitral valve prolapse and autonomic activity in normal women].


We examined relationships between mitral valve prolapse (MVP) and circadian rhythm of autonomic activity using spectral analysis of heart rate variability and echocardiography in 31 normal women. The heart rate variability was calculated from 24-hour ambulatory electrocardiogram by Fourier transformation. The power spectra were quantified at 0.04-0.15 Hz… (More)


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