Table 2.
Correlation between GWI, GWE, LVEF, GLS, MCF and clinical, biochemical and echocardiographic parameters
| GWI | GWE | GLS | LVEF | MCF | |
| Systolic blood pressure | R=0.543* | R=0.158 p=0.088 |
R=0.280† | R=0.294† | R=0.164 p=0.077 |
| Functional status | |||||
| Peak oxygen consumption | R=0.359† | R=0.141 P.278 |
R=0.313† | R=0.110 p=0.400 |
R=0.168 p=0.195 |
| Biochemistry | |||||
| NT-proBNP | R=−0.518* | R=−0.383* | R=−0.553* | R=−0.382* | R=−0.336* |
| eGFR | R=0.309* | R=0.257† | R=0.345* | R=0.205† | R=0.203† |
| Troponin | R=−0.477* | R=−0.287† | R=−0.451* | R=−0.185 p=0.051 |
R=−0.253† |
| Echocardiography | |||||
| LV stroke volume | R=0.488* | R=0.315† | R=0.511* | R=0.420* | R=0.792* |
| Left atrial volume index | R=−0.061 p=0.515 |
R=−0.009 p=0.927 |
R=−0.053 p=0.572 |
R=−0.096 p=0.309 |
R=−0.158 p=0.091 |
| E/A | R=−0.314† | R=0.033 p=0.768 |
R=-.289† | R=−0.242† | R=−0.273† |
| E/e’ | R=−0.167 p=0.071 |
R=−0.123 p=0.186 |
R=−0.237† | R=−0.081 p=0.383 |
R=−0.234† |
| LVEF | R=0.555* | R=0.384* | R=0.595* | – | R=0.530* |
| GLS | R=0.896* | R=0.642* | – | R=0.595* | R=0.567* |
| MCF | R=0.493* | R=0.326* | R=0.567* | R=0.530* | – |
| GWI | – | R=0.625* | R=0.896* | R=0.555* | R=0.336* |
| GWE | R=0.625* | – | R=0.642* | R=0.384* | R=0.493* |
*p<0.001.
†p <0.05.
eGFR, estimated glomerular filtration rate; GLS, global longitudinal strain; GWE, global work efficiency; GWI, global work index; LV, left ventricular; LVEF, left ventricular ejection fraction; MCF, myocardial contraction fraction; NT-proBNP, N-terminal pro-hormone brain natriuretic peptide.