BioMed Research International / 2014 / Article / Fig 3

Research Article

Intra-QT Spectral Coherence as a Possible Noninvasive Marker of Sustained Ventricular Tachycardia

Figure 3

Power spectral analysis of RR (a), (b), (c), and T e (d) calculated on a short-term (5-minute) ECG recording from the same patient shown in Figure 2. All the power spectra contain a high-frequency power component synchronous with breathing (between 0.20 and 0.30 Hz) and low-frequency power around 0.10 Hz.
583035.fig.003a
(a)
583035.fig.003b
(b)
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(c)
583035.fig.003d
(d)