Table 2.
Postoperative details
| RVEF < 20% | RVEF 20–30% | RVEF > 30% | p value | |
|---|---|---|---|---|
| Mortality ICU (%) | 4.2% | 1.2% | 0.7% | 0.008* |
| LVEF (%) (TEE) | ||||
| Good (> 55%) | 52 | 69 | 72 | |
| Moderate (30–49%) | 31 | 24 | 21 | < 0.001* |
| Poor (< 30%) | 17 | 8 | 9 | |
| Markers of morbidity | ||||
| Length of stay ICU (days) | 2 [2–5] | 2 [2–3] | 2 [2–2] | < 0.001* |
| Mechanical ventilation (h) | 5.5 [3.5–17.8] | 4.5 [3–8] | 3.8 [2.5–5.6] | < 0.001* |
| Fluid balance (l) | 1.9 [1.2–3.2] | 1.6 [0.8–2.8] | 1.1 [0.3–2.0] | < 0.001* |
| Use of inotropic drugs (%) | 76 | 61 | 48 | < 0.001* |
| Postoperative laboratory details | ||||
| Delta creatinine (μmol/l)‡ | 12 [− 13–41] | 5 [−9–28] | 0 [−10–19] | 0.004* |
| Peak lactate (mmol/l) | 2.6 [1.9–3.4] | 2.7 [2.0–3.5] | 2.7 [2.0–3.5] | 0.431 |
| Peak CK-MB (U/l) | 39 [24–72] | 44 [28–76] | 40 [27–66] | 0.095 |
| Postoperative complications (%) | ||||
| Re-sternotomy | 7.4 | 6.6 | 6.8 | 0.910 |
| Tamponade | 4.6 | 3.6 | 4.8 | 0.686 |
| CVVHD | 4.2 | 1.9 | 1.4 | 0.101 |
| Haemodynamic variables† | ||||
| RVEF (%) | 18 [15–19] | 25 [23–27] | 32 [31–34] | < 0.001* |
| Mean PAP (mmHg) | 20 [17–25] | 19 [15–22] | 18 [16–21] | < 0.001* |
| Cardiac index (l/min/m2) | 2.2 [2.0–2.5] | 2.4 [2.2–2.7] | 2.7 [2.4–3.0] | < 0.001* |
| EDVi (ml/m2) | 143 [124–167] | 113 [100–128] | 101 [85–115] | < 0.001* |
| CVP (mmHg) | 8 [5–10] | 7 [5–9] | 7 [5–9] | 0.081 |
| SvO2 (%) | 64 [59–68] | 65 [60–69] | 68 [63–71] | < 0.001* |
| PHT (%) | 24 | 9 | 7 | < 0.001* |
‡Postoperative delta creatinine is the difference between preoperative creatinine and postoperative peak value creatinine. †Mean values measured with a pulmonary artery catheter over the first 24 h of ICU admission
Abbreviations: ICU, intensive care unit; CK-MB, creatine kinase-myoglobin binding; CVVHD, continuous veno-venous haemodialysis; LV, left ventricular; RVEF, right ventricular ejection fraction; PAP, pulmonary artery pressure; EDVi, end-diastolic volume index; CVP, central venous pressure; SvO2, mixed venous oxygen saturation; PHT, pulmonary hypertension; TEE, transoesophageal echocardiography