Comparison of the main electrocardiographic, echocardiographic, and clinical data at baseline and at 3-month follow-up
| . | Baseline . | 3-month follow-up . | ||||
|---|---|---|---|---|---|---|
| Responders (n = 36) . | Non-responders (n = 15) . | P . | Responders (n = 36) . | Non-responders (n = 15) . | P . | |
| ECG (ms) | ||||||
| QRS (ms) | 153.9 ± 19 | 150.5 ± 19 | 0.56 | 141.5 ± 22* | 150.1 ± 26 | 0.22 |
| QR-V1 (ms) | 13.5 ± 11 | 9.9 ± 9 | 0.28 | 47.0 ± 40 | 51.3 ± 40 | 0.78 |
| QR-V6 (ms) | 62.2 ± 25 | 65.3 ± 28 | 0.69 | 19.6 ± 30 | 36.7 ± 45 | 0.22 |
| RS-V1 (ms) | 52.9 ± 12 | 44.0 ± 13 | 0.02 | 38.0 ± 10§ | 44.5 ± 11 | 0.03 |
| RS-V6 (ms) | 58.7 ± 21 | 57.7 ± 21 | 0.87 | 54.6 ± 17 | 54.4 ± 23 | 0.98 |
| SJ-V1 (ms) | 83.8 ± 26 | 96.5 ± 20 | 0.10 | 50.0 ± 44 | 59.1 ± 60 | 0.64 |
| SJ-V6 (ms) | 26.9 ± 25 | 24.3 ± 21 | 0.75 | 53.9 ± 34 | 45.5 ± 49 | 0.58 |
| D_QR_V6-V1 (ms) | 46.0 ± 35 | 55.4 ± 26 | 0.35 | −16.2 ± 47 | −8.8 ± 49 | 0.61 |
| QRS axis, n (%) | ||||||
| −30° to 120° | 19 (53) | 7 (47) | 6 (17) | 1 (7) | ||
| −30° to −90° | 16 (47) | 8 (53) | 0.76 | 30 (83) | 14 (93) | 0.66 |
| 120° to 270° | 1 (3) | 0 (0) | 0 (0) | 0 (0) | ||
| Echocardiogram | ||||||
| LVEF (%) | 25.5 ± 5.6 | 28.4 ± 6.5 | 0.11 | 36.6 ± 6.1§ | 29.3 ± 6.1 | <0.001 |
| LVEDV (cc) | 216.0 ± 60 | 217.6 ± 52 | 0.92 | 190.1 ± 55† | 217.4 ± 46 | 0.97 |
| LVESV (cc) | 162.7 ± 53 | 160.9 ± 53 | 0.91 | 122.4 ± 42§ | 156.7 ± 42 | 0.012 |
| Minnesota score | 54.3 ± 12 | 46.5 ± 14 | 0.052 | 40.2 ± 10§ | 43.5 ± 13 | 0.32 |
| NYHA class | 3.2 ± 0.6 | 2.7 ± 0.7 | 0.02 | 2.1 ± 0.4§ | 2.7 ± 0.7 | 0.001 |
| NYHA class, n (%) | ||||||
| I | – | – | 1 (3) | 0 (0) | ||
| II | 3 (8) | 6 (40) | 0.025 | 29 (80) | 6 (40) | 0.009 |
| III | 24 (67) | 7 (47) | 6 (17) | 7 (47) | ||
| IV | 9 (25) | 2 (13) | 0 (0) | 2 (13) | ||
| . | Baseline . | 3-month follow-up . | ||||
|---|---|---|---|---|---|---|
| Responders (n = 36) . | Non-responders (n = 15) . | P . | Responders (n = 36) . | Non-responders (n = 15) . | P . | |
| ECG (ms) | ||||||
| QRS (ms) | 153.9 ± 19 | 150.5 ± 19 | 0.56 | 141.5 ± 22* | 150.1 ± 26 | 0.22 |
| QR-V1 (ms) | 13.5 ± 11 | 9.9 ± 9 | 0.28 | 47.0 ± 40 | 51.3 ± 40 | 0.78 |
| QR-V6 (ms) | 62.2 ± 25 | 65.3 ± 28 | 0.69 | 19.6 ± 30 | 36.7 ± 45 | 0.22 |
| RS-V1 (ms) | 52.9 ± 12 | 44.0 ± 13 | 0.02 | 38.0 ± 10§ | 44.5 ± 11 | 0.03 |
| RS-V6 (ms) | 58.7 ± 21 | 57.7 ± 21 | 0.87 | 54.6 ± 17 | 54.4 ± 23 | 0.98 |
| SJ-V1 (ms) | 83.8 ± 26 | 96.5 ± 20 | 0.10 | 50.0 ± 44 | 59.1 ± 60 | 0.64 |
| SJ-V6 (ms) | 26.9 ± 25 | 24.3 ± 21 | 0.75 | 53.9 ± 34 | 45.5 ± 49 | 0.58 |
| D_QR_V6-V1 (ms) | 46.0 ± 35 | 55.4 ± 26 | 0.35 | −16.2 ± 47 | −8.8 ± 49 | 0.61 |
| QRS axis, n (%) | ||||||
| −30° to 120° | 19 (53) | 7 (47) | 6 (17) | 1 (7) | ||
| −30° to −90° | 16 (47) | 8 (53) | 0.76 | 30 (83) | 14 (93) | 0.66 |
| 120° to 270° | 1 (3) | 0 (0) | 0 (0) | 0 (0) | ||
| Echocardiogram | ||||||
| LVEF (%) | 25.5 ± 5.6 | 28.4 ± 6.5 | 0.11 | 36.6 ± 6.1§ | 29.3 ± 6.1 | <0.001 |
| LVEDV (cc) | 216.0 ± 60 | 217.6 ± 52 | 0.92 | 190.1 ± 55† | 217.4 ± 46 | 0.97 |
| LVESV (cc) | 162.7 ± 53 | 160.9 ± 53 | 0.91 | 122.4 ± 42§ | 156.7 ± 42 | 0.012 |
| Minnesota score | 54.3 ± 12 | 46.5 ± 14 | 0.052 | 40.2 ± 10§ | 43.5 ± 13 | 0.32 |
| NYHA class | 3.2 ± 0.6 | 2.7 ± 0.7 | 0.02 | 2.1 ± 0.4§ | 2.7 ± 0.7 | 0.001 |
| NYHA class, n (%) | ||||||
| I | – | – | 1 (3) | 0 (0) | ||
| II | 3 (8) | 6 (40) | 0.025 | 29 (80) | 6 (40) | 0.009 |
| III | 24 (67) | 7 (47) | 6 (17) | 7 (47) | ||
| IV | 9 (25) | 2 (13) | 0 (0) | 2 (13) | ||
LVEDV, left ventricular end-diastolic volume; LVEF, left ventricular ejection fraction; LVESV, left ventricular end-systolic volume; NYHA, average New York Heart Association.
P for follow-up vs. baseline: *0.004; †<0.001; §<0.00001.
Comparison of the main electrocardiographic, echocardiographic, and clinical data at baseline and at 3-month follow-up
| . | Baseline . | 3-month follow-up . | ||||
|---|---|---|---|---|---|---|
| Responders (n = 36) . | Non-responders (n = 15) . | P . | Responders (n = 36) . | Non-responders (n = 15) . | P . | |
| ECG (ms) | ||||||
| QRS (ms) | 153.9 ± 19 | 150.5 ± 19 | 0.56 | 141.5 ± 22* | 150.1 ± 26 | 0.22 |
| QR-V1 (ms) | 13.5 ± 11 | 9.9 ± 9 | 0.28 | 47.0 ± 40 | 51.3 ± 40 | 0.78 |
| QR-V6 (ms) | 62.2 ± 25 | 65.3 ± 28 | 0.69 | 19.6 ± 30 | 36.7 ± 45 | 0.22 |
| RS-V1 (ms) | 52.9 ± 12 | 44.0 ± 13 | 0.02 | 38.0 ± 10§ | 44.5 ± 11 | 0.03 |
| RS-V6 (ms) | 58.7 ± 21 | 57.7 ± 21 | 0.87 | 54.6 ± 17 | 54.4 ± 23 | 0.98 |
| SJ-V1 (ms) | 83.8 ± 26 | 96.5 ± 20 | 0.10 | 50.0 ± 44 | 59.1 ± 60 | 0.64 |
| SJ-V6 (ms) | 26.9 ± 25 | 24.3 ± 21 | 0.75 | 53.9 ± 34 | 45.5 ± 49 | 0.58 |
| D_QR_V6-V1 (ms) | 46.0 ± 35 | 55.4 ± 26 | 0.35 | −16.2 ± 47 | −8.8 ± 49 | 0.61 |
| QRS axis, n (%) | ||||||
| −30° to 120° | 19 (53) | 7 (47) | 6 (17) | 1 (7) | ||
| −30° to −90° | 16 (47) | 8 (53) | 0.76 | 30 (83) | 14 (93) | 0.66 |
| 120° to 270° | 1 (3) | 0 (0) | 0 (0) | 0 (0) | ||
| Echocardiogram | ||||||
| LVEF (%) | 25.5 ± 5.6 | 28.4 ± 6.5 | 0.11 | 36.6 ± 6.1§ | 29.3 ± 6.1 | <0.001 |
| LVEDV (cc) | 216.0 ± 60 | 217.6 ± 52 | 0.92 | 190.1 ± 55† | 217.4 ± 46 | 0.97 |
| LVESV (cc) | 162.7 ± 53 | 160.9 ± 53 | 0.91 | 122.4 ± 42§ | 156.7 ± 42 | 0.012 |
| Minnesota score | 54.3 ± 12 | 46.5 ± 14 | 0.052 | 40.2 ± 10§ | 43.5 ± 13 | 0.32 |
| NYHA class | 3.2 ± 0.6 | 2.7 ± 0.7 | 0.02 | 2.1 ± 0.4§ | 2.7 ± 0.7 | 0.001 |
| NYHA class, n (%) | ||||||
| I | – | – | 1 (3) | 0 (0) | ||
| II | 3 (8) | 6 (40) | 0.025 | 29 (80) | 6 (40) | 0.009 |
| III | 24 (67) | 7 (47) | 6 (17) | 7 (47) | ||
| IV | 9 (25) | 2 (13) | 0 (0) | 2 (13) | ||
| . | Baseline . | 3-month follow-up . | ||||
|---|---|---|---|---|---|---|
| Responders (n = 36) . | Non-responders (n = 15) . | P . | Responders (n = 36) . | Non-responders (n = 15) . | P . | |
| ECG (ms) | ||||||
| QRS (ms) | 153.9 ± 19 | 150.5 ± 19 | 0.56 | 141.5 ± 22* | 150.1 ± 26 | 0.22 |
| QR-V1 (ms) | 13.5 ± 11 | 9.9 ± 9 | 0.28 | 47.0 ± 40 | 51.3 ± 40 | 0.78 |
| QR-V6 (ms) | 62.2 ± 25 | 65.3 ± 28 | 0.69 | 19.6 ± 30 | 36.7 ± 45 | 0.22 |
| RS-V1 (ms) | 52.9 ± 12 | 44.0 ± 13 | 0.02 | 38.0 ± 10§ | 44.5 ± 11 | 0.03 |
| RS-V6 (ms) | 58.7 ± 21 | 57.7 ± 21 | 0.87 | 54.6 ± 17 | 54.4 ± 23 | 0.98 |
| SJ-V1 (ms) | 83.8 ± 26 | 96.5 ± 20 | 0.10 | 50.0 ± 44 | 59.1 ± 60 | 0.64 |
| SJ-V6 (ms) | 26.9 ± 25 | 24.3 ± 21 | 0.75 | 53.9 ± 34 | 45.5 ± 49 | 0.58 |
| D_QR_V6-V1 (ms) | 46.0 ± 35 | 55.4 ± 26 | 0.35 | −16.2 ± 47 | −8.8 ± 49 | 0.61 |
| QRS axis, n (%) | ||||||
| −30° to 120° | 19 (53) | 7 (47) | 6 (17) | 1 (7) | ||
| −30° to −90° | 16 (47) | 8 (53) | 0.76 | 30 (83) | 14 (93) | 0.66 |
| 120° to 270° | 1 (3) | 0 (0) | 0 (0) | 0 (0) | ||
| Echocardiogram | ||||||
| LVEF (%) | 25.5 ± 5.6 | 28.4 ± 6.5 | 0.11 | 36.6 ± 6.1§ | 29.3 ± 6.1 | <0.001 |
| LVEDV (cc) | 216.0 ± 60 | 217.6 ± 52 | 0.92 | 190.1 ± 55† | 217.4 ± 46 | 0.97 |
| LVESV (cc) | 162.7 ± 53 | 160.9 ± 53 | 0.91 | 122.4 ± 42§ | 156.7 ± 42 | 0.012 |
| Minnesota score | 54.3 ± 12 | 46.5 ± 14 | 0.052 | 40.2 ± 10§ | 43.5 ± 13 | 0.32 |
| NYHA class | 3.2 ± 0.6 | 2.7 ± 0.7 | 0.02 | 2.1 ± 0.4§ | 2.7 ± 0.7 | 0.001 |
| NYHA class, n (%) | ||||||
| I | – | – | 1 (3) | 0 (0) | ||
| II | 3 (8) | 6 (40) | 0.025 | 29 (80) | 6 (40) | 0.009 |
| III | 24 (67) | 7 (47) | 6 (17) | 7 (47) | ||
| IV | 9 (25) | 2 (13) | 0 (0) | 2 (13) | ||
LVEDV, left ventricular end-diastolic volume; LVEF, left ventricular ejection fraction; LVESV, left ventricular end-systolic volume; NYHA, average New York Heart Association.
P for follow-up vs. baseline: *0.004; †<0.001; §<0.00001.
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