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Value of the urine strip test in the early diagnosis of bacterial peritonitis
Author(s) -
Akman Sema,
Uygun Vedat,
Guven Ayfer Gur
Publication year - 2005
Publication title -
pediatrics international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.49
H-Index - 63
eISSN - 1442-200X
pISSN - 1328-8067
DOI - 10.1111/j.1442-200x.2005.02119.x
Subject(s) - medicine , spontaneous bacterial peritonitis , urine , peritonitis , test (biology) , value (mathematics) , gastroenterology , statistics , ascites , paleontology , mathematics , biology
Background: In an effort to detect the presence of leukocytes in the peritoneal dialysate fluid (PDF) a urine dipstick may be practical for the early detection of peritonitis in peritoneal dialysis patients.Methods: The study was performed in 44 samples of four children with peritonitis. The total counts of white blood cell (WBC) and polimorphonuclear neutrophils (PMNs) were found using both a hemocytometer (CELDYN 3700 R) and a microscopic method. The existence of leukocytes was investigated by urine dipstick tests.Results: The dipstick test was correlated with both hemocytometer and microscopic methods ( r = 0.537, P = 0.001; r = 0.560, P = 0.0001, respectively). Our results revealed no false negative values in all strip categories. At the proposed cut‐off point (> 100/mm 3 of WBC count), a 3+ reading on the strip test reached a sensitivity of 100% for the detection of peritonitis with a specificity of 100%. A 2+ reading reached a sensitivity of 100% with lower specificity (71.4%) at the same cut‐off point. The dipstick test correlated significantly with the total counts of PMNs ( r = 0.80, P = 0.0001). All positive strip categories had more than 50% of PMNs with a low PMN percentage of negative strip category in PDF samples.Conclusion: It is proposed that the strip test might be a valuable test to diagnose bacterial peritonitis through the detection of both WBC and PMN in peritoneal dialysis patients.