Loss of lag-response curvilinearity of indices of heart rate variability in congestive heart failure.
作者： Tushar P Thakre , Michael L Smith
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摘要: Background Heart rate variability (HRV) is known to be impaired in patients with congestive heart failure (CHF). Time-domain analysis of ECG signals traditionally relies heavily on linear indices an essentially non-linear phenomenon. Poincare plots are commonly used study behavior physiologic signals. Lagged incorporate autocovariance information and for various lags can provide interesting insights into the autonomic control heart.
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