Journal
JOURNAL OF ARTHROPLASTY
Volume 28, Issue 6, Pages 913-917Publisher
CHURCHILL LIVINGSTONE INC MEDICAL PUBLISHERS
DOI: 10.1016/j.arth.2012.10.015
Keywords
frozen section tests; periprosthetic infections; diagnosis; polymorphonuclear leukocyte; specificity
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Funding
- National Natural Science Foundation of China [81101377, 81171687]
- Research Program of Zhejiang Provincial Health Department [N20100757]
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We objectively appraised available evidence regarding the threshold for the number of polymorphonuclear leukocytes required in frozen section tests used to diagnose periprosthetic infection. Pooled summary estimates for sensitivity, specificity, positive likelihood ratio, negative likelihood ratio and diagnostic odds ratio (OR) were compared for ten and five polymorphonuclear leukocytes per high power field as the threshold. The total cohort included 1011 patients and the rate of infection was 19.2%. Although there was no difference in sensitivity or diagnostic OR, specificity was significantly higher for ten than for five polymorphonuclear leukocytes per high power field (p = 0.007) In sum, a threshold of 10 polymorphonuclear leukocytes is better for diagnosing periprosthetic infections. (C) 2013 Elsevier Inc. All rights reserved.
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