Table 4. HRV In Case Patients With And Without LVSD.
| HRV (ms) | Normal LV mean (SEM) | LVSD mean (SEM) | p-value mean (SEM) |
| RMSSD | 27 (2) | 31 (4) | NS |
| Triangular index | 29 (1) | 28 (2) | NS |
| SDNN | 113 (4) | 109 (7) | NS |
| SDNN index | 44 (3) | 43 (2) | NS |
| SDANN | 104 (4) | 100 (6) | NS |
LV: Left ventricle, LVSD: left ventricular systolic dysfunction, SEM: standard error of mean, NS: not significant (p > 0.05), RMSSD: mean square root of successive differences, SDNN: standard deviation normal-to-normal interval, SDANN: standard deviation average normal-to-normal interval.