Table 3 Averaged QT intervals (ms) in seven men with idiopathic ventricular fibrillation (IVF) and five women with the long QT syndrome.
| Heart rate (beats/min) | IVF | Long QT syndrome | ||
|---|---|---|---|---|
| Measured QT | QT deviation | Measured QT | QT deviation | |
| 46–50 | 413 (17) | −18 (17) | 510 (20)** | 60 (17) |
| 51–55 | 394 (16)* | −15 (16) | 496 (24)* | 64 (21) |
| 56–60 | 383 (13)* | −20 (13) | 479 (22)* | 58 (17) |
| 61–65 | 370 (13)* | −18 (13) | 466 (17)** | 59 (14) |
| 66–70 | 364 (13)* | −20 (13) | 457 (16)** | 63 (15) |
| 71–75 | 357 (12)* | −16 (12) | 451 (17)** | 68 (15) |
| 76–80 | 353 (11)* | −13 (11) | 448 (17)** | 72 (13) |
| 81–85 | 351 (12)* | −11 (12) | 444 (19)** | 76 (12) |
| 86–90 | 350 (11) | −8 (11) | 426 (9)* | 66 (9) |
| 91–95 | 347 (11) | −4 (11) | 420 (3)** | 64 (3) |
| 96–100 | 344 (11) | −3 (11) | ||
| 101–105 | 340 (11) | −1 (11) | ||
| 106–110 | 346 (12) | −2 (12) | ||
Data are mean (SD).
*p<0.01, **p<0.001 v normal group shown in table 2.