Table 1.
Clinical and ablation parameters of the 2 adolescents undergoing CNA
| Parameter | Case 1 | Case 2 |
|---|---|---|
| Age, y | 12 | 14 |
| Sex | Female | Female |
| Diagnosis | Sinus pauses (>4.4 s) | Sinus bradycardia with fusion beats and ventricular escape |
| Baseline HR, beats/min | 60 | 40 |
| Syncope history | Yes | Yes |
| Atropine response | >25% HR increase (98 beats/min) | >25% HR increase (128 beats/min) |
| Pre-CNA EP measurements | AH: 80 ms, HV: 42 ms, Wenckebach: 390 | AH: 70 ms, HV: 40 ms, Wenckebach: 360 |
| Post-CNA EP measurements | AH: 72 ms, HV: 42 ms, Wenckebach: 360 | AH: 65 ms, HV: 40 ms, Wenckebach: 350 |
| Targeted GPs | RSGP and RIGP | RSGP and RIGP |
| Total RF lesions | 21 | 25 |
| Ablation Index | 400 | 400 |
| Power, W, mean | 30 | 36 |
| Temperature, °C, mean | 27 | 26 |
| Impedance, Ω, mean | 180 | 122 |
| Impedance drop, Ω, mean | 10 | 16 |
| Total ablation time, min:s | 3:05 | 5:01 |
| Complications | None | None |
| 3-mo follow-up | No syncopal events, mean HR, 110 beats/min | No syncopal events, mean HR, 100 beats/min |
| 6-mo follow-up | No syncopal events, mean HR, 90 beats/min | No syncopal events, mean HR, 105 beats/min |
CNA = cardioneuroablation; EP = electrophysiology; GP = ganglionated plexus; HR = heart rate; RF = radiofrequency; RSGP = superior right atrial ganglionated plexus; RIGP = inferior right atrial ganglionated plexus.