TABLE 1.
Baseline patients' characteristics
| Variables | Overall (N = 122) | No pacemaker (N = 42) | Pacemaker (N = 80) | P‐value |
|---|---|---|---|---|
| Age (years) | 61.90 (±18.28) | 55.98 (±21.97) | 65.01 (±15.27) | 0.070 |
| LVEF (%) | 57.36 (±9.81) | 59.05 (±9.06) | 56.46 (±10.13) | 0.184 |
| Sex (Male) | 75 (61.50) | 25 (59.50) | 50 (62.50) | 0.748 |
| Presyncope (N of patients) | 39 (32) | 10 (23.80) | 29 (36.30) | 0.162 |
| Syncope (N of patients) | 92 (75.40) | 34 (81) | 58 (72.50) | 0.303 |
| Presyncope (N of events) | 2.36 (±1.20) | 2.30 (±0.95) | 2.38 (±1.29) | 0.937 |
| Syncope (N of events) | 2.23 (±1.29) | 2.26 (±1.16) | 2.21 (±1.36) | 0.679 |
| Follow‐up (months) | 50.39 (±32.40) | 44.74 (±25.73) | 53.35 (±35.19) | 0.400 |
| Organic heart disease | ||||
| Coronary artery disease | 26 (21.3) | 7 (16.7) | 19 (23.8) | 0.364 |
| Hypertrophic cardiomyopathy | 1 (0.8) | 0 (0) | 1 (1.3) | 0.467 |
| Dilated cardiomyopathy | 6 (4.9) | 1 (2.4) | 5 (6.3) | 0.348 |
| Valvular heart disease | 3 (2.5) | 0 (0) | 3 (3.8) | 0.204 |
| 12‐lead ECG | ||||
| Heart rate | 57.88 (±7.73) | 59.33 (±8.40) | 57.11 (±7.29) | 0.140 |
| 1st degree atrioventricular block | 36 (29.5) | 7 (16.7) | 29 (36.3) | 0.024 |
| Right Bundle Branch Block | 15 (12.3) | 2 (4.8) | 13 (16.3) | 0.066 |
| Left Bundle Branch Block | 7 (5.7) | 0 (0) | 7 (8.8) | 0.048 |
| Left Anterior Hemiblock | 17 (13.9) | 3 (7.1) | 14 (17.5) | 0.117 |
| Left Posterior Hemiblock | 3 (2.5) | 1 (2.4) | 2 (2.5) | 0.728 |
| Bifascicular block | 11 (9) | 0 (0) | 11 (13.8) | 0.012 |
| Trifascicular block | 6 (4.9) | 0 (0) | 6 (7.5) | 0.074 |
| Holter monitoring | ||||
| Mean 24‐hour heart rate ≤60 bpm | 59 (48.4) | 21 (50) | 38 (47.5) | 0.793 |
| Sinus pauses ≥2 sec | 11 (9) | 2 (4.8) | 9 (11.3) | 0.199 |
| Second degree atrioventricular block | 11(9) | 3 (7.1) | 8 (10) | 0.436 |