Clinical Study
Chronic Apical and Nonapical Right Ventricular Pacing in Patients with High-Grade Atrioventricular Block: Results of the Right Pace Study
Table 1
Demographics and baseline characteristics of the study population.
| | Parameter | RVA
() | Non-RVA
() | |
| | Male gender, (%) | 171 (62) | 104 (64) | 0.770 | | Age, years | 75 ± 9 | 73 ± 11 | 0.059 | | AV block—third degree, (%) | 45 (16) | 39 (23) | 0.054 | | AV block—second degree, (%) | 65 (24) | 52 (32) | 0.062 | | Coronary artery disease, (%) | 65 (24) | 47 (29) | 0.237 | | Myocardial infarction, (%) | 28 (10) | 21 (13) | 0.393 | | Previous valvular surgery, (%) | 12 (4) | 5 (3) | 0.493 | | History of atrial fibrillation, (%) | 66 (24) | 33 (20) | 0.353 | | Hypertension, (%) | 199 (73) | 120 (74) | 0.821 | | Diabetes, (%) | 65 (24) | 53 (33) | 0.045 | | Chronic obstructive pulmonary disease, (%) | 26 (9) | 19 (12) | 0.471 | | Chronic kidney disease, (%) | 56 (20) | 29 (18) | 0.499 | | LV ejection fraction, % | 57 ± 9 | 58 ± 9 | 0.897 | | LVEDV, ml | 101 ± 43 | 101 ± 30 | 0.992 | | LVESV, ml | 44 ± 21 | 45 ± 18 | 0.695 | | Severe mitral regurgitation, (%) | 26 (9) | 17 (10) | 0.750 | | SLD > 41 ms during spontaneous conduction, (%) | 69 (25) | 45 (28) | 0.576 | | SLD > 41 ms during ventricular pacing, (%) | 132 (48) | 83 (51) | 0.579 | | QRS duration during spontaneous conduction, ms | 98 ± 25 | 92 ± 24 | 0.122 | | QRS duration during ventricular pacing, ms | 145 ± 30 | 141 ± 31 | 0.285 | | Active fixation lead in right ventricle, (%) | 74 (27) | 135 (83) | <0.001 |
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AV = atrioventricular; LV = left ventricular; LVEDV = left ventricular end-diastolic volume; LVESV = left ventricular end-systolic volume; SLD = septal-to-lateral delay.
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