Pattern Changes in the Heart Rate Variability of Patients Undergoing Coronary Artery Bypass Grafting Surgery

<div>Heart rate variability. (a) Ratio of decreased heart rate variability before and after surgery and (b) ratio of decreased heart rate variability by each index.</div>

Cardiology Research and Practice

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Figure 2

Figure 2: Pattern Changes in the Heart Rate Variability of Patients Undergoing Coronary Artery Bypass Grafting Surgery 