Factors predisposing to severe acute pancreatitis: evaluation and prevention

Table 1 Factors predisposing to infections associated with SAP

Factors	Total cases	Incidence of infections			P values
		cases	%	χ2
Admission
1980.1-1992.6	94	40	42.6	7.58	< 0.01
1992.7-2001.12	114	28	24.6
Ascites
Non-bloody	156	40	25.6	14.1	< 0.01
Bloody	52	28	53.8
Paralytic ileus
< 5 days	150	43	28.7	3.96	< 0.05
≥ 5 days	58	25	43.1
Ranson Scores
< 5	144	40	27.8	5.14	< 0.05
≥ 5	64	28	43.8
Hematocrit
< 45%	128	35	27.3	4.33	< 0.05
≥ 45%	80	33	41.2
CT Balthazar Scores
< 7	138	38	27.5	4.95	< 0.05
≥ 7	70	30	42.9
Etiology
Biliogenic SAP	90	35	38.9	2.77	> 0.05
Non-biliogenic SAP	118	33	28.0
Serum amylase
< 200 U/L	83	25	30.1	0.41	> 0.05
≥ 200 U/L	125	43	34.4
Serum calcium
< 2 mmol/L	88	34	38.6	2.45	> 0.05
≥ 2 mmol/L	120	34	28.3
TPN
< 7 days	126	37	29.4	1.61	> 0.05
≥ 7 days	82	31	37.8