Table 2.
Procedural characteristics of the patients
| All patients (n = 91) | Control protocol (n = 57) | HPSD protocol (n = 34) | p value | |
|---|---|---|---|---|
| RF time PVI (sec, median [IQR]) | 1654 [1130, 2024] | 1949 [1693, 2261] | 1036 [898, 1184] | < 0.001 |
| Fluoro time (min, median [IQR]) | 2 [1, 3] | 2 [1, 3] | 2 [1, 3] | 0.7 |
| Fluoro dose (Gycm2, median [IQR]) | 168 [76, 341] | 215 [79, 410] | 149 [69, 205] | 0.215 |
| Procedure duration (min, median [IQR]) | 105 [85, 127] | 118 [104, 141] | 84 [76, 100] | < 0.001 |
| Stick to map time (min, median [IQR]) | 19 [13, 26] | 20 [13, 28] | 18 [14, 22] | 0.19 |
| Map duration (min, median [IQR]) | 16 [12, 20] | 18 [15, 21] | 12 [10, 16] | < 0.001 |
| RF duration (min, median [IQR]) | 69 [48, 80] | 75 [66, 97] | 44 [35, 57] | < 0.001 |
| Number of lesions | 79 [67, 91] | 85 [75, 105] | 67 [60,80] | < 0.001 |
| First-pass isolation (%) | 78 (88) | 48 (87) | 30 (88) | 1 |
| CTI ablation (%) | 22 (24) | 14 (25) | 8 (24) | 1 |
| RF time for CTI (sec, median [IQR]) | 312 [244, 526] | 298 [255, 534] | 335 [209, 501] | 0.733 |
| Overall RF time (sec, median [IQR]) | 1742 [1248, 2124] | 2006 [1889, 2373] | 1107 [934, 1329] | < 0.001 |
| Energy dose (Joules, median [IQR]) | 52,156 [42630, 59347] | 54,565 [48917, 61174] | 43,312 [37484, 53156] | < 0.001 |
| hs-cTn before RF (ng/L, median [IQR]) | 7 [5, 11] | 7 [5, 11] | 7 [6, 11] | 0.618 |
| hs-cTn after RF (ng/L, median [IQR]) | 864 [698, 1125] | 823 [663, 1020] | 996 [724, 1264] | 0.029 |
| Outcome data | ||||
| Recurrence during FU (%) | 12 (13) | 9 (16) | 3 (8.8) | 0.669 |
| Redo procedures (%) | 5 (5.5) | 5 (8.8) | 0 (0) | 1 |
Data are presented as n (%) or median (IQR). Patients from the training phase (n = 11) in the control protocol were excluded for this analysis. Abbreviations: IQR interquartile range; RF radiofrequency energy; Fluoro fluoroscopy; CTI cavotricuspid isthmus ablation; FU follow-up