Sensitivity of diagnosis of spontaneous bacterial peritonitis is higher with the automated cell count method

Table 4 Markers of infection and characteristics of ascitic fluid in positive-spontaneous bacterial peritonitis and negative-spontaneous bacterial peritonitis cases in cohort 1, n (%)/mean ± SD

	Negative-SBP (n = 132)	Positive-SBP (n = 5)	P value
Markers of inflammation
CRP (mg/L)	42 ± 40	59 ± 26	0.33
CRP > 5 mg/L	106 (89)	5 (100)	1.0
Leukocyte count in serum (× 109/L)	10.2 ± 6.6	7.5 ± 2.3	0.36
Neutrophil count in serum (× 109/L)	7.6 ± 5.7	5.8 ± 1.9	0.50
Temperature (°C)	37.0 ± 0.7	37.5 ± 0.3	0.14
Heart rate (beats per minute)	91 ± 15	92 ± 19	0.87
Respiratory rate (breaths per minute)	18 ± 4	19 ± 1	0.74
Presence of SIRS	33/108 (31)	0/5	0.17
MAP (mmHg)	79 ± 16	89 ± 10	0.19
Characteristics of the ascitic fluid
Albumin (g/L)	7.7 ± 4.9	8.5 ± 2.1	0.74
Auto. polymorph count (cells × 109/L)	0.47 ± 1.89	4.76 ± 3.86	< 0.001
Manual polymorph count (cells × 106/L)	72 ± 259	1226 ± 1706	< 0.001

SBP: Spontaneous bacterial peritonitis; CPR: C-reactive protein; SIRS: Systemic inflammatory response syndrome; MAP: Mean arterial pressure.