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Table 3 Comparison of patient-related factors associated with postoperative mortality

From: Poor prognostic factors in patients who underwent surgery for acute non-occlusive ischemic colitis

  No. of patients (%)
Died (n = 15) Survived (n = 35) P -value a
Mean age (years) ± SD 67.33 ± 12.87 69.26 ± 14.79 0.664
Gender    0.545
Male 9 (60.0) 17 (48.6)
Female 6 (40.0) 18 (51.4)
Smoking 7 (46.7) 13 (37.1) 0.547
Alcohol habit 3 (20.0) 13 (37.1) 0.328
Mean BMI (Kg/m2) ± SD 23.18 ± 2.86 22.39 ± 3.74 0.468
Liver cirrhosis 2 (13.3) 3 (8.6) 0.629
Nephropathy 8 (53.3) 6 (17.1) 0.016
Diabetes 4 (26.7) 10 (28.6) 1.000
Hypertension 7 (46.7) 16 (45.7) 1.000
Respiratory diseaseb 0 (0) 2 (5.7) 1.000
Coronary artery disease 7 (46.7) 6 (17.1) 0.040
Atrial fibrillation 4 (26.7) 7 (20.0) 0.713
Previous abdominal surgeryc 6 (40.0) 6 (17.1) 0.146
Previous cardiovascular surgeryd 6 (40.0) 3 (8.6) 0.015
ASA score (≥4)e 14 (93.3) 20 (57.1) 0.019
Localization of ischemia    0.445
Right colon 2 (13.3) 9 (25.7)
Transverse colon 0 (0) 3 (8.6)
Left colon 10 (66.7) 23 (60.0)
Entire colon 1 (6.7) 2 (5.7)
Preoperative initial symptoms    
Abdominal pain 14 (93.3) 32 (91.4) 1.000
Hematochezia 4 (26.7) 11 (31.4) 1.000
Diarrhea 3 (20.0) 8 (22.9) 1.000
Surgical delay (≥3 days) 11 (73.3) 12 (34.3) 0.015
Peritoneal irritation 11 (73.3) 22 (62.9) 0.533
Preoperative SIRS 10 (66.7) 15 (42.9) 0.217
Hemodynamic instability 12 (80.0) 15 (42.9) 0.029
Preoperative use of vasopressors 9 (60.0) 9 (25.7) 0.028
Preoperative laboratory data    
WBC (k/uL) 1315 ± 6.59 1421 ± 9.16 0.687
CRP (mg/dL) 13.56 ± 7.92 10.47 ± 11.62 0.353
Urea (mg/dL) 41.98 ± 25.01 26.08 ± 20.77 0.024
Creatinine (mg/dL) 4.64 ± 9.74 1.54 ± 1.30 0.068
Lactate (mmol/L) 2.84 ± 2.69 3.08 ± 2.88 0.791
Type of surgery    0.492
Rt. Hemicolectomy 1 (6.7) 7 (20.0)
T-colon segmental resection 0 (0) 3 (8.6)
Lt. hemicolectomy 3 (20.0) 5 (14.3)
Sigmoid resection 7 (46.7) 11 (31.4)
Subtotal/Total colectomy 4 (26.7) 7 (20.0)
Colostomy 0 (0) 2 (5.7)
Emergency surgery 14 (93.3) 29 (82.9) 0.659
Bowel perforation 6 (40.0) 12 (34.3) 0.754
Stoma formation 12 (80.0) 22 (62.9) 0.328
Operative time (min) 236.1 ± 86.0 213.0 ± 81.4 0.370
Estimated blood loss (>1000 mL) 7 (46.7) 10 (28.6) 0.329
Intraoperative blood transfusion 9 (60.0) 17 (48.6) 0.545
Intraoperative use of vasopressors 9 (60.0) 10 (28.6) 0.056
  1. aCross-table analysis using Fisher’s exact test.
  2. bRespiratory disease included chronic obstructive pulmonary disease, bronchial asthma.
  3. cPrevious abdominal surgery included gastrointestinal surgery, abdominal aortic aneurysm surgery.
  4. dPrevious cardiovascular surgery included coronary artery bypass surgery, aortoiliac surgery, peripheral vascular surgery.
  5. eASA score according to the American Society of Anesthesiologists
  6. BMI, body mass index; SIRS, systemic inflammatory response syndrome; SD, standard deviation
  7. Bold print, P < 0.05.