The Use of a Novel Quantitative Marker of Echogenicity of Pleural Fluid in Parapneumonic Pleural Effusions

Table 2

Pleural fluid characteristics of the study population. Data are expressed as mean ± SD or as absolute numbers. PPE, parapneumonic effusion.

Parameter	PPE	Uncomplicated PPE	Complicated PPE	value
Effusion pH	7.20 ± 0.256	7.45 ± 0.77	7.10 ± 0.10	<0.001
Effusion total protein (g/dl)	4.64 ± 0.84	4.35 ± 1.01	4.77 ± 0.76	NS
Effusion albumin (g/dl)	2.45 ± 0.563	2.40 ± 0.55	2.47 ± 0.58	NS
Effusion LDH (IU/L)	2092.33 ± 3503.37	313.62 ± 181.37	2984.43 ± 4031.95	<0.001
Total cell count	12971.25 ± 31649.57	1561.25 ± 1151.79	18648.75 ± 37844.24	0.003
Polymorphonuclears (%)	73.50 ± 18.79	55.85 ± 22.55	82.37 ± 7.23	0.002
Lymphocytes (%)	23.38 ± 17.73	38.37 ± 22.70	15.62 ± 6.84	0.002
ADA(IU/L)	22.46 ± 13.84	11.11 ± 3.90	37.62 ± 32.56	0.001
Hypoechogenicity index	9.22 ± 4.14	15.39 ± 8.30	7.24 ± 2.89	<0.001