Table 1 Baseline characteristics of the study participants. Values are expressed as mean ± SD or number (%). CABG: coronary artery bypass graft. P value refers to comparison between ventriculo-arterial uncoupled and ventriculo-arterial coupled patients. Abnormal ventriculo-arterial coupling was defined as a EA/ELV ratio greater than 1.36
Variables | Ventriculo-arterial coupled patients (n = 7) | Ventriculo-arterial uncoupled patients (n = 23) | P value |
|---|---|---|---|
Age (mean (SD), years) | 66 (13) | 66 (12) | 0.947 |
Gender (F/M) | 1/6 | 7/16 | 0.638 |
Disease, n (%) | |||
Arterial hypertension | 5 (71) | 14 (61) | 1 |
Aortic stenosis | 5 (71) | 14 (61) | 1 |
Diabetes mellitus | 3 (43) | 3 (13) | 0.120 |
Dyslipidaemia | 5 (71) | 11 (48) | 0.399 |
Smoking | 4 (57) | 10 (44) | 0.675 |
Heart surgery, n (%) | |||
Valve replacement | 5 (71) | 12 (52) | |
CABG | 1 (14) | 5 (22) | |
Mixed | 0 | 4 (17) | 0.589 |
Other (atrial myxoma, ascending aorta) | 1 (14) | 1 (4) | |
Thoracic surgery, n (%) | 0 | 1 (4) | |
Cardiopulmonary bypass time (min, mean (SD)) (n = 29) | 90 (46) | 99 (44) | 0.617 |
Respiratory parameters | |||
Tidal volume (ml kg−1 of predicted body weight, mean (SD), | 7.8 (0.5) | 7.8 (0.7) | 0.957 |
Total PEEP (cmH2O, mean (SD)) | 5 (1) | 5 (1) | 0.443 |