Association of Serum Creatinine Level with Prognosis of Laparotomy for Acute Mesenteric Ischemia after Cardiovascular Surgery

Table 2

Comparison of the demographics of patients between the survivor and nonsurvivor groups.

Demographic characteristics	Survivor (n = 16)	Nonsurvivor (n = 13)	value
Age, years^a	78.0 (72.8–83.8)	77.0 (76.0–84.5)	0.779
Sex
Male, n (%)	10 (62.5)	10 (76.9)	0.336
Female, n (%)	6 (37.5)	3 (23.1)
Type of AMI
Occlusive mesenteric ischemia, n (%)	10 (62.5)	7 (53.8)	0.638
Nonocclusive mesenteric ischemia, n (%)	6 (37.5)	6 (46.2)
Duration between CS and AMI, days^a	1.5 (0.0–47.25)	1.5 (1.0–37.00)	0.619
Operative type
Cardiac surgery, n (%)	1 (6.3)	0 (0)	0.552
Thoracic aortic, n (%)	6 (37.5)	6 (46.2)	0.638
Abdominal aortic, n (%)	6 (37.5)	5 (38.5)	0.628
Peripheral artery, n (%)	3 (18.8)	2 (15.4)	0.604
Emergency CS
Yes, n (%)	10 (62.5)	13 (100.0)	0.017
No, n (%)	6 (37.5)	0 (0)
Comorbidities at the index CS
Hypertension, n (%)	12 (75.0)	7 (53.8)	0.212
Diabetes mellitus, n (%)	4 (25.0)	2 (15.4)	0.435
Heart failure, n (%)	4 (25.0)	3 (23.1)	0.626
Peripheral artery disease, n (%)	3 (18.8)	1 (7.7)	0.383
Renal insufficiency, n (%)	2 (12.5)	3 (23.1)	0.396
Hemodialysis at the onset of AMI
Yes, n (%)	2 (12.5)	8 (61.5)	0.008
No, n (%)	14 (87.5)	5 (38.5)
Ventilator at the onset of AMI
Yes, n (%)	5 (31.3)	5 (38.5)	0.493
No, n (%)	13 (68.7)	8 (61.5)
Laboratory data prior to laparotomy for AMI
White blood cell count,/μL^a	11085 (7908–14113)	10935 (6093–14898)	0.846
Lactate, mmol/L^a	15.0 (10.5–63.0)	11.8 (9.6–84.8)	0.371
Creatinine, mg/dL^a	1.27 (0.91–1.94)	2.23 (1.65–3.09)	0.004
AST, IU/L^a	33.5 (20.5–85.3)	74.0 (41.0–273.3)	0.045
C-reactive protein, mg/dL^a	8.07 (0.98–16.26)	9.47 (3.07–16.68)	0.619
CT findings at the AMI onset
Ascites, n (%)	9 (56.3)	8 (61.5)	0.774
Free air, n (%)	2 (12.5)	2 (15.4)	0.617
Intestinal pneumatosis, n (%)	5 (31.3)	2 (15.4)	0.292
Hepatic portal vein gas, n (%)	1 (6.3)	1 (7.7)	0.704
P-POSSUM-predicted mortality rate^a	53.1 (21.5–92.7)	97.7 (43.8–99.3)	0.092
Extent of bowel resection in laparotomy
Small intestine, n (%)	7 (43.8)	9 (69.2)	0.170
Colorectum, n (%)	12 (75.0)	6 (46.2)	0.114

^aMedian (interquartile range). AMI, acute mesenteric ischemia; AST, aspartate aminotransferase; CS, cardiovascular surgery; CT, computed tomography; P-POSSUM, Portsmouth physiological and operative severity score for the enumeration of mortality and morbidity.