Evaluation of prognostic factors and scoring system in colonic perforation

Table 1 Comparison of clinical factors between survivors and non-survivors

Variable	Survivors(n = 20)	Non-survivors(n = 6)	P
Age	71.9 ± 12.7	75.1 ± 6.96	0.5561
Sex Male	6	3	0.6782
Female	14	3	0.5722
Hinchey’s stage I/II	8	1
III/IV	12	5
Preoperative data
Mean blood pressure (mmHg)	93.9 ± 21.8	69.8 ± 17.9	0.0231
WBC count (/mm3)	11247 ± 8629	6683 ± 5036	0.2381
Total protein (g/dL)	5.95 ± 0.84	4.76 ± 1.44	0.0321
Potassium (mEq/L)	3.85 ± 0.68	3.88 ± 1.23	0.9381
Creatinine (mg/dL)	0.91 ± 0.45	1.48 ± 0.58	0.0191
BUN (mg/dL)	30.4 ± 31.7	27.0 ± 12.3	0.7991
PaO2/FiO2 ratio	380.9 ± 273.5	314.2 ± 280.1	0.6251
pH	7.426 ± 0.080	7.319 ± 0.170	0.0501
Postoperative data
Mean blood pressure (mmHg)	90.6 ± 12.7	76.0 ± 19.1	0.0401
WBC count (/mm3)	10305 ± 6202	3416 ± 4411	0.0191
Total protein (g/dL)	5.45 ± 0.76	5.45 ± 0.26	0.9361
Potassium (mEq/L)	3.85 ± 0.68	3.88 ± 1.23	0.9381
Creatinine (mg/dL)	0.88 ± 0.50	1.43 ± 0.69	0.0451
BUN (mg/dL)	27.0 ± 27.6	25.8 ± 15.4	0.9231
PaO2/FiO2 ratio	278.1 ± 125.6	126.2 ± 98.6	0.0141
pH	7.443 ± 0.049	7.315 ± 0.173	0.0091

¹Student’s t-test;

²Chi-squared test.

Table 2 Comparison of prognostic score between survivors and non-survivors

Score	Survivors(n = 20)	Non-survivors(n = 6)	P(Student’s t test)
APACHE II	10.4 ± 3.84	19.3 ± 2.87	0.00003
MPI	25.1 ± 4.68	28.6 ± 5.95	0.141
PIA II	1.42 ± 0.99	0.39 ± 1.54	0.066