Poincaré Plot of RR-Interval Differences (PORRID) A New Method for Assessing Heart Rate Variability (original) (raw)
2014
Interaction of sympathetic and parasympathetic nervous systems result in variation of RR interval (variation of heart rate) appeared significantly and related to physiological (or pathological) conditions. Heart rate variabiliy (HRV) is a non-invasive index of the neural control of the heart. The control of heart rate has mainly involve nonlinear mechanism so that the application of non linear techniques seems more suitable for HRV analysis. Poincare plot is one of the non linear techniques used for ascertaining the HRV, which in turn is a marker of the activity of the autonomic system. Analysis of a conventional Poincare plots that use only successive RRI duplets will underestimate the ability of heart beats to influence a train of succeeding beats. A new method for assessing HRV has developed, namely Poincare Plot of RR Interval Differences (PORRID). PORRID is a graphical representation of the variation of RR intervals difference (RRI) that form a pattern around the origin. The P...
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