Table 1.
Patient characteristics, n (%)
| No CHD N = 2481 | CHD N= 367 | Overall N= 2848 | |
|---|---|---|---|
| Gestational age, weeks | |||
| <32 | 479 (19) | 74 (20) | 553 (20) |
| 33-36 | 774 (31) | 112 (31) | 886 (31) |
| ≥37 | 1223 (49) | 181 (49) | 1404 (49) |
| Birth weight, g | |||
| <1500 | 265 (11) | 42 (11) | 307 (11) |
| 1500-2499 | 562 (23) | 100 (27) | 662 (23) |
| >2500-3499 | 1649 (67) | 224 (61) | 1873 (66) |
| Male | 1577 (64) | 204 (56) | 1781 (63) |
| Postnatal age, days | |||
| <7 | 1678 (68) | 191 (52) | 1869 (66) |
| 7-14 | 484 (20) | 106 (29) | 590 (21) |
| >14 | 319 (13) | 70 (19) | 389 (14) |
| Type of SVT | |||
| Unspecified SVT | 1907 (77) | 293 (80) | 2200 (77) |
| Atrial flutter | 395 (16) | 53 (14) | 448 (16) |
| WP W syndrome | 179 (7) | 21 (6) | 200 (7) |
| Inotropic support on day of diagnosis | 144 (6) | 36 (10) | 180 (6) |
| Mechanical ventilation on day of diagnosis | 441 (18) | 102 (28) | 543 (19) |
CHD, congenital heart disease; SVT, supraventricular tachycardia; WPW, Wolff Parkinson White.