Table 2.
Baseline characteristics of the Primary Study Group Split by Endpoint
| Variable | No VA/Death (n=20) | VA/Death (n=6) | P |
|---|---|---|---|
| Age, y | 64.5±2.2 | 71.8±3.5 | 0.120 |
| Sex, % male | 95 | 100 | … |
| QRSD, ms | 107±4.7 | 108±6.3 | 0.889 |
| LVEF, % | 30.5±3.3 | 25.3±3.0 | 0.414 |
| PES result (positive/total) | 7/20 | 4/6 | 0.348 |
| R2I2 | 1.03±0.06 | 1.30±0.10 | 0.037 |
| EDV index, mL/cm | 1.43±0.12 | 1.44±0.23 | 0.958 |
| SV index, mL/cm | 0.37±0.04 | 0.39±0.06 | 0.790 |
| Mass index, g/cm | 0.80±0.04 | 0.72±0.04 | 0.342 |
| Height, cm | 170±1.7 | 173±2.2 | 0.383 |
| Follow-up, mo | 24[17] | 19 [12] | 0.273 |
| PIZ%* | 7.4[8.0] | 15.6[4.6] | 0.016 |
| PIZ mass, g* | 7.4[7.9] | 20.1 [7.5] | 0.033 |
| PIZ mass/scar mass%* | 66[64] | 72[26] | 0.643 |
| Scar% left ventricular mass* | 8.7[13.5] | 22.0[3.8] | 0.042 |
Parametric data are expressed as mean±standard deviation; nonparametric data as median [inter-quartile range]. (Abbreviations: QRSD QRS duration, LVEF left ventricular ejection fraction, PES programmed electrical stimulation, PIZ peri-infarct zone, R2I2 Regional Restitution Instability Index, EDV left ventricular end-diastolic volume, SV stroke volume).
*
CMR PIZ data were available for 19 of 26 patients.