Table 6.
Characteristics of the dynamic electrocardiograms of patients with long R-R intervals (2-3 s vs. >3 s (n (%))).
| Parameters | Long R-R interval = 2-3 s (n = 245) | Long R-R interval >3 s (n = 154) | χ 2 | P |
|---|---|---|---|---|
| Second-degree atrioventricular block (n = 45) | 40 (16.33%) | 5 (3.25%) | 14.887 | 0.001 |
| Paroxysmal atrial tachycardia (n = 35) | 30 (12.24%) | 5 (3.25%) | 8.476 | 0.004 |
| Paroxysmal atrial flutter (n = 68) | 48 (19.59%) | 20 (12.99%) | 2.469 | 0.116 |
| Junctional escape beats (n = 24) | 16 (6.53%) | 8 (5.19%) | 0.109 | 0.741 |
| Ventricular escape beats (n = 15) | 10 (4.08%) | 5 (3.25%) | 0.068 | 0.795 |
| Linking phenomenon (n = 8) | 5 (2.04%) | 3 (1.95%) | 0.025 | 0.876 |
| Transient ventricular arrest (n = 15) | 15 (6.12%) | 0 (0.00%) | 8.178 | 0.004 |
| Accelerated ventricular escape (n = 12) | 8 (3.27%) | 4 (2.60%) | 0.006 | 0.937 |
| Complete right bundle branch block (n = 35) | 35 (14.29%) | 0 (0.00%) | 22.363 | 0.001 |
| Incomplete right bundle branch block (n = 12) | 12 (4.90%) | 0 (0.00%) | 6.188 | 0.013 |