Table 2.
Characteristics between group 1 (pQRSD ≤130 ms) and group 2 (pQRSd >130 ms).
| Parameters | Group 1 (N = 19) Mean ± S.D |
Group 2 (n = 29) Mean ± S.D |
P value | |||
|---|---|---|---|---|---|---|
| Age | 54.79 ± 14.62 | 57.13 ± 10.18 | p = 0.515 | |||
| Sex (male/female) | 8/11 | 20/9 | p = 0.065 | |||
| pQRSd (msec) | 120 ± 7.4 | 155.5 ± 17.3 | P < 0.0001 | |||
| Mode | Dual chamber | 16 | 17 | P = 0.061 | ||
| Single chamber | 3 | 12 | ||||
| Site | RVOT | 14 | 14 | P = 0.080 | ||
| Apical | 5 | 15 | ||||
| Hypertension | 7 | 16 | P = 0.250 | |||
| Diabetes | 1 | 5 | P = 0.381 | |||
| Coronary Artery Disease | 1 | 6 | P = 0.219 | |||
| Valvular heart disease | 0 | 2 | P = 0.512 | |||
| Ventricular Pacing (%) | 53.8 ± 43.0 | 63.1 ± 44.7 | P = 0.541 | |||
| LVEF (Baseline %) | 57.2 ± 4.1 | 56.5 ± 4.8 | P = 0.615 | |||
| LVEF (at 12 months %) | 54.8 ± 7.3 | 52.3 ± 6.9 | P = 0.946 | |||
| LVEF (at paced rate 100 bpm) baseline % | 56.6 ± 5.5 | P = 0.151 | 54.7 ± 5.6 | P = 0.031 | P = 0.272 | |
| LVEF (at paced rate 100 bpm) 1 Year % | 54.9 ± 7.5 | 52.9 ± 6.3 | P = 0.239 | |||
| Paired difference in LVEF at 1 year % | −1.67 ± 4.70 | −1.75 ± 4.07 | P = 0.95 | |||