Table 1

Relation between QT interval and heart rate    

Patient numberQT interval (ms) at each heart rate (beats/min)
110907050
Group I
 1420460500520
 2400440480
 3420460500
 4400440480
 5420460500520
 6390420460480
 7440460480500
 8440470520550
 Mean (SD)416 (18)451 (16)490 (19)
Group II
 9400420440460
 10380400420
 11420440460480
 12400420420
 13380400420
 Mean (SD)396 (17)416 (17)432 (18)