Table 2.
Comparison of clinical and electrophysiological characteristics of patients with and without pre-potentials.
| With PP N=13 |
Without PP N=8 |
P value | |
|---|---|---|---|
| Age (years) | 50.0±13.4 | 58.4±12.4 | 0.17 |
| Sex (male, %) | 6 (46.2) | 5 (62.5) | 0.66 |
| Symptoms (n, %) | |||
| Chest discomfort | 5 (38.5) | 4 (50) | 0.67 |
| Fatigue | 10 (76.9) | 5 (62.5) | 1.00 |
| Palpitations | 9 (69.2) | 5 (62.5) | 1.00 |
| Lightheadedness/presyncope | 6 (46.2) | 6 (75) | 0.37 |
| Syncope | 0 (0) | 2 (25) | 0.13 |
| Non-sustained VT | 6 (46.2) | 3 (37.5) | 1.00 |
| Sustained VT | 0 (0) | 1 (12.5) | 0.38 |
| PVC burden* (%) | 26.1±10.9 | 14.9±10.1 | 0.03 |
| LVEF (%) | 54.8±9.7 | 48.1±17.1 | 0.27 |
| LVEDD (mm) | 53.2±4.7 | 53.6±5.8 | 0.84 |
| LVEF <50% (n, %) | 3 (37.5) | 4 (30.8) | 1.00 |
| >1 VA morphology at AMC (n, %) | 4 (30.8) | 0 (0) | 0.13 |
| V-H interval during VA (ms) | 32.1±38.6 | 76.3±11.1 | 0.06 |
| VA ablated at other regions* (n, %) | 1 (7.7) | 4 (50) | 0.047 |
| VEGM-QRS at AMC* (ms) | 9.0±28.5 | 33.1±8.8 | 0.03 |
| Pacemap score* (n/12) | 8.7±1.6 | 11.4±0.8 | 0.001 |
PP – prepotential; VT – ventricular tachycardia; PVC – premature ventricular complex; LVEF – left ventricular ejection fraction; LVEDD – left ventricular end-diastolic diameter; VA – ventricular arrhythmia; AMC – aortomitral continuity; VEGM – ventricular electrogram