Echocardiographic and haemodynamic characteristics, and their correlation with calibrated integrated backscatter in 29 men and 11 women with coronary artery disease
| Variable | Mean±SD or median (IQR) (n=30–40) | r | p Value |
|---|---|---|---|
| Left ventricular ejection fraction (%) | 65±7 | 0.02 | 0.91 |
| E/A ratio | 1.06±0.35 | −0.03 | 0.87 |
| Mean S′ (cm/s) | 7.4±1.5 | 0.03 | 0.87 |
| Mean E′ (cm/s) | 7.0±1.7 | −0.06 | 0.70 |
| Mean A’ (cm/s) | 9.0±1.9 | −0.32 | 0.048 |
| Average E/E′ ratio | 11.2±3.5 | 0.20 | 0.22 |
| Peak global systolic strain (%) | −18.6±2.8 | 0.14 | 0.45 |
| Peak global systolic strain rate (s−1) | −0.97±0.17 | 0.13 | 0.49 |
| Mean peak systolic strain (%) | −19.2±2.8 | 0.10 | 0.60 |
| Mean peak systolic strain rate (s−1) | −1.21±0.44 | −0.14 | 0.47 |
| Calculated integrated backscatter (dB) | −19.5±4.2 | ||
| Central venous pressure (mm Hg) | 7.8±3.4 | −0.21 | 0.20 |
| Pulmonary capillary wedge pressure (mm Hg) | 10 (8–12)* | −0.24† | 0.13† |
| Cardiac index (L/min/m2) | 2.6±0.6 | 0.17 | 0.30 |
Data shown for 40 patients, except for strain and strain rate where n=30–31 patients.
Central venous pressure, pulmonary capillary wedge pressure, and cardiac index were measured immediately postinduction of anaesthesia.
*Median value and IQR given non-parametric distribution.†Value derived from log-transformed data.