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Figure 2 Three-dimensional continuous plots (wavelet transforms) of RR interval in patients who showed an augmentation of low-frequency component during coronary occlusion. The low-frequency power around 0.06 Hz gradually increased as the occlusion period progressed. Patient initials and target coronary lesion are indicated in each figure. Def = balloon deflation; Inf = balloon inflation; LAD = left anterior descending artery; LCX = left circumflex artery; RCA = right coronary artery.
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