Table 2 Classification of supraventricular tachycardia in study patients
|  | ZF (n = 1020) | CF (n = 2040) | Total cohort (n = 3060) |
|---|---|---|---|
SVT | 1001 (98.1%) | 1998 (97.9%) | 2999 (98.0%) |
 1.AVNRT | 556 (54.5%) | 1052 (51.6%) | 1608 (52.5%) |
 2.AP | |||
  1) Septal | 75 (7.4%) | 160 (7.8%) | 235 (7.7%) |
  2) Left free wall | 261 (25.6%) | 568 (27.8%) | 829 (27.1%) |
  3) Right free wall | 88 (8.6%) | 173 (8.5%) | 261 (8.5%) |
  4) Multiple | 16 (1.6%) | 31 (1.5%) | 47 (1.5%) |
 3.AP + AVNRT | 5 (0.5%) | 14 (0.7%) | 19 (0.6%) |
(Special AP) | |||
 (Para His) | 6 (0.6%) | 15 (0.7%) | 21 (0.7%) |
 (Venous) | 2 (0.2%) | 5 (0.2%) | 7 (0.2%) |