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Table 2 Postoperative details

From: Impaired right ventricular ejection fraction after cardiac surgery is associated with a complicated ICU stay

  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*
  1. 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
  2. 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