Table 1.
Patient characteristics
| Characteristic | Conventional arm N = 141 |
Pressure wire–guided arm N = 140 |
P value |
|---|---|---|---|
| Mean age (years) | 72.3 ± 10.5 | 71.1 ± 9.9 | .43 |
| Sex, n (%) | .45 | ||
| Male | 110 (78) | 98 (70) | |
| Female | 31 (22) | 42 (30) | |
| Etiology, n (%) | .21 | ||
| Ischemic | 81 (57) | 70 (50) | |
| Nonischemic | 60 (43) | 70 (50) | |
| Mean QRS duration (ms) | 157 ± 23 | 161 ± 23 | .33 |
| QRS morphology, n (%) | .38 | ||
| LBBB | 90 (64) | 81 (58) | |
| Non-LBBB | 29 (20) | 33 (24) | |
| RV paced | 22 (16) | 26 (18) | |
| Rhythm, n (%) | .70 | ||
| Sinus | 106 (75) | 108 (77) | |
| AT/AF | 35 (25) | 32 (23) | |
| Mean PR interval if in SR (ms) | |||
| LBBB | 189 ± 31 | 187 ± 37 | .62 |
| Non-LBBB | 182 ± 27 | 186 ± 41 | .34 |
| Median NT-proBNP (pg/mL) | 1479 (IQR 426–3936) | 1046 IQR (295–2167) | .54 |
| Drugs, n (%) | |||
| Beta blockers | 127 (90) | 131 (93) | .37 |
| ACEI/ARB | 126 (89) | 132 (94) | .13 |
| MRA | 84 (60) | 87 (62) | .66 |
| Loop diuretics | 98 (70) | 104 (74) | .37 |
| NYHA class, n (%) | .12 | ||
| 2 | 43 (30) | 49 (35) | |
| 3 | 94 (67) | 91 (65) | |
| 4 | 4 (3) | 0 (0) | |
| QOL score | 43 ± 23 | 39 ± 24 | .24 |
| 6-minute walk distance (m) | 265 ± 131 | 283 ± 147 | .40 |
| LV ESV (mL) | 119 ± 44 | 129 ± 48 | .12 |
| LV EDV (mL) | 165 ± 24 | 179 ± 61 | .17 |
| LV EF (%) | 29 ± 6 | 28 ± 5 | .43 |
ACEI/ARB = angiotensin converting enzyme inhibitor/angiotensin receptor blocker; AT/AF = atrial tachycardia/atrial fibrillation; IQR = interquartile range; LBBB = left bundle branch block; LV EDV = left ventricular end-diastolic volume; LV EF = left ventricular ejection fraction; LV ESV = left ventricular end-systolic volume; MRA = mineralocorticoid receptor antagonist; NYHA = New York Heart Association; QOL = quality of life; RV = right ventricle; SR = sinus rhythm.