Ramana Sadananda

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We evaluated the electrocardiograms of 208 postmenopausal women (ages 40 to > or = 70 years) without heart disease, medications that could alter the QT interval, use of vaginal estrogens, unknown hormone replacement therapy, or electrocardiographic abnormalities both with (n = 76) and without (n = 132) hormone replacement therapy, and found no significant(More)
To understand the behavior of the heart under chaotic conditions, a computer simulation was made considering it as coupled biological oscillators. Piece-wise linear and non-linear equations were used to characterize the observed phase response behavior of the myocardial cells. Models predict phase locking and chaotic regions that correspond to the AV blocks(More)
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