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

Table 7 Markers of infection and characteristics of ascitic fluid in positive-spontaneous bacterial peritonitis and negative-spontaneous bacterial peritonitis cases in cohort 2, n (%)/mean ± SD

	Negative-SBP (n = 52)	Positive-SBP (n = 33)	P value
Markers of inflammation
CRP (mg/L)	22 ± 17	57 ± 47	< 0.001
CRP > 5 mg/L	24 (89)	30 (91)	1.00
Leukocyte count in serum (× 109/L)	7.3 ± 2.1	11.1 ± 5.1	< 0.001
Neutrophil count in serum (× 109/L)	5.0 ± 1.8	8.6 ± 4.4	< 0.001
Temperature (°C)	36.9 ± 0.3	37.1 ± 1.0	0.22
Heart rate (beats per minute)	102 ± 16	104 ± 20	0.75
Respiratory rate (breaths per minute)	18 ± 3	21 ± 5	0.02
Presence of SIRS	4 (13)	14 (50)	0.004
MAP (mmHg)	84 ± 12	74 ± 17	0.01
Characteristics of the ascitic fluid
Albumin (g/L)	8.0 ± 4.1	7.5 ± 5.8	0.61
Automated polymorph count (cells × 109/L)	0.06 ± 0.06	3.27 ± 3.68	< 0.001
Manual polymorph count (cells × 106/L)	20 ± 22	2157 ± 4105	< 0.001

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