The Effects of Continuous Positive Airway Pressure on Premature Ventricular Contractions and Ventricular Wall Stress in Patients with Heart Failure and Sleep Apnea
Table 3
The chances of frequency of PVC, Tp-e, QTc, QTc dispersion, and Tp-e/QTc ratio during the follow-up period in both groups.
Study group
Control group
Study group versus control group
Baseline
6th month
Baseline
6th month
value
Baseline
6th month
value
value
value
Frequency of PVC
1290 (865–1665)
945 (685–1330)
<0.001
1360 (960–1765)
1325 (990–1740)
0.57
0.82
0.004
Tp-e interval (ms)
79.7 ± 7.02
71.85 ± 6.07
<0.001
79.18 ± 8.01
79.13 ± 7.97
0.89
0.76
<0.001
QTc interval (ms)
410.05 ± 11.2
397.2 ± 11.64
<0.001
410.43 ± 12.11
414.25 ± 11.56
0.004
0.89
<0.001
QTc dispersion
53.28 ± 8.51
37.95 ± 8.31
<0.001
55.48 ± 9.97
54.83 ± 9.58
0.16
0.29
<0.001
Tp-e/QTc ratio
194.18 ± 14.99
180.48 ± 13.89
<0.001
192.15 ± 15.03
190.48 ± 16.81
0.13
0.55
<0.001
Two-way repeated measures ANOVA was used; frequency of premature ventricular contractions were compared between the groups using Mann–Whitney U test; PVC: premature ventricular contractions; Tp-e: T-peak to T-end interval; QTc: corrected QT interval.
