Table 2.
CMRI strain parameters between the patients with and without an Impella
| CMRI strain parameters | Impella (n = 7) |
Non-Impella (n = 18) |
P value |
|---|---|---|---|
| LVEF (%) | 45 ± 13 | 34 ± 7.6 | 0.034 |
| LVEDV (mL) | 149 ± 29 | 187 ± 41 | 0.006 |
| LVESV (mL) | 80 ± 29 | 121 ± 40 | 0.012 |
| LV Mass (g) | 80 ± 13 | 96 ± 22 | 0.047 |
| Infarcted size (% of LV myocardial mass) | 29 ± 13 | 31 ± 11 | 0.97 |
| LV longitudinal | |||
| Global | |||
| Peak strain (%) | − 9.3 ± 2.0 | − 8.1 ± 2.1 | 0.43 |
| Systolic strain rate (1/s) | − 0.8 ± 0.2 | − 0.4 ± 0.4 | 0.020 |
| Diastolic strain rate (1/s) | 0.7 ± 0.2 | 0.4 ± 0.3 | 0.12 |
| Infarcted area | |||
| Peak strain (%) | − 6.6 ± 2.3 | − 5.9 ± 3.2 | 0.76 |
| Systolic strain rate (1/s) | − 0.5 ± 0.4 | − 0.3 ± 0.4 | 0.29 |
| Diastolic strain rate (1/s) | 0.3 ± 0.3 | 0.3 ± 0.3 | 0.81 |
| Non-infarcted area | |||
| Peak strain (%) | − 13 ± 3.0 | − 11 ± 3.5 | 0.32 |
| Systolic strain rate (1/s) | − 1.2 ± 0.5 | − 0.6 ± 0.7 | 0.12 |
| Diastolic strain rate (1/s) | 1.2 ± 0.4 | 0.6 ± 0.5 | 0.024 |
| LV radial | |||
| Global | |||
| Peak strain (%) | 23 ± 9.1 | 15 ± 4.9 | 0.044 |
| Systolic strain rate (1/s) | 1.4 ± 0.8 | 0.8 ± 0.3 | 0.024 |
| Diastolic strain rate (1/s) | − 1.3 ± 0.5 | − 0.7 ± 0.3 | 0.006 |
| Infarcted area | |||
| Peak strain (%) | 19 ± 10 | 12 ± 5.8 | 0.12 |
| Systolic strain rate (1/s) | 1.2 ± 0.8 | 0.6 ± 0.4 | 0.052 |
| Diastolic strain rate (1/s) | − 0.9 ± 0.6 | − 0.4 ± 0.5 | 0.074 |
| Non-infarcted area | |||
| Peak strain (%) | 27 ± 8.2 | 18 ± 6.3 | 0.020 |
| Systolic strain rate (1/s) | 1.7 ± 0.7 | 1.1 ± 0.4 | 0.024 |
| Diastolic strain rate (1/s) | − 1.9 ± 0.4 | − 1.0 ± 0.3 | < 0.001 |
| LV circumferential | |||
| Global | |||
| Peak strain (%) | − 13 ± 4.4 | − 9.5 ± 3.1 | 0.024 |
| Systolic strain rate (1/s) | − 0.9 ± 0.4 | − 0.6 ± 0.2 | 0.044 |
| Diastolic strain rate (1/s) | 0.8 ± 0.2 | 0.4 ± 0.2 | 0.001 |
| Infarcted area | |||
| Peak strain (%) | − 12 ± 5.5 | − 7.8 ± 4.1 | 0.16 |
| Systolic strain rate (1/s) | − 0.8 ± 0.4 | − 0.4 ± 0.5 | 0.10 |
| Diastolic strain rate (1/s) | 0.6 ± 0.3 | 0.2 ± 0.3 | 0.024 |
| Non-infarcted area | |||
| Peak strain (%) | − 16 ± 3.0 | − 12 ± 3.2 | 0.010 |
| Systolic strain rate (1/s) | − 1.1 ± 0.4 | − 0.7 ± 0.2 | 0.030 |
| Diastolic strain rate (1/s) | 1.0 ± 0.1 | 0.6 ± 0.2 | < 0.001 |
CMRI cardiac magnetic resonance image, LV left ventricular, LVEF left ventricular ejection fraction, LVEDV left ventricular end-diastole volume, LVESV left ventricular end-systolic volume
P values are determined by a Mann–Whitney U test