Table 2.
Electrophysiological characteristics and ablation results of patients
| Ablation substrats, n | 78 | AP substrate location, manifest/concealed, n | 28/8 |
|---|---|---|---|
| Manifest AP (WPW) | 28 | Anteroseptal | 2/0 |
| Concealed AP | 8 | Midseptal | 3/1 |
| Focal atrial tachycardia | 3 | Right posterior | 1/0 |
| Typical AVNRT | 32 | Right posteroseptal | 10/1 |
| Atypical AVNRT | 2 | Right anterolateral | 4/1 |
| VPB | 4 | Left lateral | 6/3 |
| Fascicular VT | 1 | Left posterior | 2/2 |
| Acute success [n/total (%)] | Recurrence at follow-up of 43.4±23.3 weeks [n (%)] | 4 (5.2)* | |
| - By patient | 74/76 (97.3) | ||
| - By tachycardia substrates | 76/78 (97.4) | Fluoroscopy time, minutes, mean±SD | 5.4±3.15** |
| Manifest AP (WPW) | 26/28 (92.8) | ||
| Concealed AP | 8/8 (100) | Total procedure duration, min, mean±SD | 153.1±44.3 |
| Focal atrial tachycardia | 3/3 (100) | ||
| Typical AVNRT | 32/32 (100) | ||
| Atypical AVNRT | 2/2 (100) | Complication (n) | 2*** |
| VPB | 4/4 (100) | ||
| Fascicular VT | 1/1 (100) |
*
1 WPW, 1 concealed AP, and 2 AVNRT recurred after 2, 1, 5, and 6 months after the procedure, respectively.
**
14 patients who required fluoroscopy have been included in these averages.
***
1 transient right bundle branch block and 1 pericardial effusion, which resolved spontaneously
AP - accessory pathway; AVNRT - atrioventricular nodal reentrant tachycardia; VT - ventricular tachycardia; WPW - Wolff-Parkinson-White syndrome