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. 2020 Aug 11;62:59–64. doi: 10.1016/j.jelectrocard.2020.08.008

Table 3.

Changings in electrocardiographic findings during treatment course.

Baseline ECG On-treatment first ECG On-treatment second ECG
Heart rate, bpm, mean ± SD 86 ± 14 77 ± 12 76 ± 12
RR duration, ms, mean ± SD 739.06 ± 128.84 801.59 ± 140.49 816.06 ± 161.21
PR interval, ms, mean ± SD 158.47 ± 25.10 156.35 ± 26.00 155.53 ± 26.77
QRS duration, ms, mean ± SD 94.00 ± 20.55 97.88 ± 21.73 99.18 ± 20.99
QT interval, ms, mean ± SD 370.09 ± 37.15 389.68 ± 42.92 397.88 ± 55.66
QTc interval, ms, mean ± SD
  • by Bazett

435.28 ± 32.78 459.68 ± 38.40 441.91 ± 38.71
  • by Fridericia

415.67 ± 28.51 442.30 ± 40.42 426.33 ± 41.19
  • by Framingham Heart Study

412.07 ± 25.65 440.97 ± 39.11 426.21 ± 39.68
LBBB, n (%) 4 (3.7) 4 (3.7) 4 (3.7)
RBBB, n (%) 3 (2.8) 3 (2.8) 3 (2.8)
NIVCD, n (%) 4 (3.7) 4 (3.7) 4 (3.7)

ECG- electrocardiogram; LBBB- left bundle branch block; NIVCD - Nonspecific intraventricular conduction delay; QTc- corrected QT; RBBB- right bundle branch block; SD- standard deviation.