Table 2 Correlation of global longitudinal peak strain to left ventricular systolic and diastolic parameters, cardiac biomarkers and haemodynamics
Global longitudinal peak strain | ||||||
|---|---|---|---|---|---|---|
Echocardiography on day 1 | Echocardiography on day 3 to 4 | Follow-up echocardiography | ||||
Echocardiographic parameters | r | P | r | P | r | p |
Left ventricular ejection fraction, % | −0.70 | <0.001 | −0.44 | 0.03 | 0.44 | 0.49 |
Early mitral tissue Doppler velocity, cm/s | −0.59 | <0.001 | −0.39 | 0.06 | 0.12 | 0.77 |
Ratio of early mitral inflow to early mitral tissue Doppler velocity | 0.27 | 0.01 | 0.15 | 0.52 | 0.36 | 0.39 |
Cardiac biomarkers and data from invasive monitoring | ||||||
Amino-terminal pro-brain natriuretic peptide | 0.54 | <0.001 | 0.01 | 0.98 | ||
High sensitivity troponin T | 0.35 | 0.02 | 0.25 | 0.30 | ||
Cardiac index at time of echo | −0.45 | 0.03 | −0.54 | 0.25 | ||