Background and Objective HATCH score is an established predictor of progression from paroxysmal to persistent atrial fibrillation (AF). The purpose of this study was to determine if HATCH score could predict recurrence of AF after radiofrequency catheter ablation (RFCA).
Methods The data of 123 consecutive artial fibrillation patients who underwent an index circumferential pulmonary veins (PV) ablation were retrospectively analysed. Of theses patients, 65 (52.9%) patients had HATCH = 0, 41 (33.3%) patients had HATCH = 1, and 17 (13.8%) patients had HATCH≥2 (11 patients had HATCH = 2, 5 patients had HATCH = 3, 1 patients had HATCH = 4). The recurrence was defined as atrial tachyarrhythmia lasting more than 30 seconds after three months of RFCA.
Results After 12 months follow-up, HATCH score was significant higher in recurrence group than in non-recurrence group (0.91 ± 0.94 vs 0.53 ± 0.80, P = 0.02). The recurrence rate were 27.7%, 36.6% and 64.7% in HATCH = 0, HATCH = 1, HATCH≥2 categories respectively. The ratio of patients with HATCH≥2 in recurrence group was higher than in no recurrence group (P = 0.007, OR = 4.06). The sensitivity and specificity of HATCH≥2 to discover recurrence was 25.0%, 92.4% respectively. Cumulative no recurrence rate of HATCH≥2 was lower than other scores analysised by Kaplan-Meier curve (P = 0.038).
Conclusions HATCH score has a certain value in predicting AF recurrence after RFCA. HATCH≥2 has a high specificity to identify recurrence of AF after RFCA.