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Table 1 Preoperative conditions and type of surgery in the patient population

From: In search of the ideal risk-scoring system for very high-risk cardiac surgical patients: a two-stage approach

Factor Total population Survivors Non-survivors P
  N = 105 N = 78 N = 27  
Age (years) 74.5 (7.2) 74.9 (6.8) 73.5 (8.3) 0.404
Weight (kgs) 71.2 (12.9) 70.4 (11.6) 73.5 (16.2) 0.290
Gender female 27 (25.7) 18 (23.1) 9 (33.3) 0.293
Left ventricle EF (%) 26 (23–30) 25 (23–30) 26 (23–33) 0.514
Pulmonary hypertension 13 (12.4) 6 (7.7) 7 (25.9) 0.013
Recent (30 days) MI 7 (6.7) 6 (7.7) 1 (3.7) 0.474
Unstable angina 1 (1.0) 1 (1.3) 0 (0) 0.554
Congestive heart failure 29 (27.6) 20 (25.6) 9 (33.3) 0.441
Cardiogenic shock 6 (5.7) 3 (3.8) 3 (11.1) 0.161
Intra-aortic balloon pump 7 (6.7) 4 (5.1) 3 (11.1) 0.283
Active endocarditis 5 (4.8) 3 (3.8) 2 (7.4) 0.454
COPD 18 (17.1) 15 (19.2) 3 (11.1) 0.335
Previous CVA 10 (9.5) 8 (10.3) 2 (7.4) 0.664
Diabetes on medication 31 (29.5) 22 (28.2) 9 (33.3) 0.615
Serum creatinine (mg/dL) 1.4 (1.2–1.8) 1.3 (1.2–1.6) 1.7 (1.4–1.9) 0.002
Serum bilirubin (mg/dL) 0.5 (0.5–0.7) 0.5 (0.5–0.7) 0.5 (0.5–0.6) 0.957
Hematocrit (%) 35.8 (5.5) 36.5 (5.3) 34.0 (5.8) 0.047
Redo surgery 17 (16.2) 10 (12.8) 7 (25.9) 0.111
Urgent procedure 37 (35.2) 28 (35.9) 9 (33.3) 0.810
Emergent procedure 7 (6.7) 2 (2.6) 5 (18.5) 0.004
Isolated CABG 25 (23.8) 22 (28.2) 3 (11.1) 0.074
CABG + mitral valve 19 (18.1) 16 (20.5) 3 (11.1) 0.274
CABG + aortic valve 8 (7.6) 5 (6.4) 3 (11.1) 0.427
Mitral + aortic valve 5 (4.8) 3 (3.8) 2 (7.4) 0.454
Ascending aorta/arch 5 (4.8) 3 (3.8) 2 (7.4) 0.454
Isolated valve 23 (21.9) 13 (16.7) 10 (37.0) 0.027
Others 20 (19) 16 (20.5) 4 (14.8) 0.516
  1. Data are number (%) or mean (standard deviation) or median (interquartile range)
  2. CABG coronary artery bypass graft, CVA cerebrovascular accident, COPD chronic obstructive pulmonary disease, EF ejection fraction