%0 Journal Article %T Significance of Perioperative Tests to Diagnose the Infection in Revision Total Shoulder Arthroplasty %J The Archives of Bone and Joint Surgery %I Mashhad University of Medical Sciences, Iranian Society of Knee Surgery, Arthroscopy and Sports Tramatology,Iranian Orthopaedic Association %Z 2345-4644 %A Ahmadi, Shahryar %A Lawrence, Thomas M. %A Sahota, Shawn %A Schleck, Cathy D. %A Harmsen, William S. %A Cofield, Robert H. %A Sperling, John W. %D 2018 %\ 09/01/2018 %V 6 %N 5 %P 359-364 %! Significance of Perioperative Tests to Diagnose the Infection in Revision Total Shoulder Arthroplasty %K Infection in Revisions Shoulder Arthroplasty %K Perioperative Tests %K shoulder %K Shoulder Arthroplasty %R 10.22038/abjs.2017.24928.1671 %X Background: The purpose of this study was to evaluate the value of perioperative tests for the diagnosis of infectionin revision shoulder arthroplasty.Methods: A retrospective analysis was performed on 537 shoulder arthroplasties (429 patients) that underwent revisionshoulder arthroplasty at our institution. Periprosthetic tissue cultures were positive in 169/537 surgeries.Results: White-blood cell count (WBC) was elevated in 3.8% revision arthroplasties. Erythrocyte sedimentation rate (ESR)was elevated in 23.1% revision arthroplasties. The C-reactive protein (CRP) was elevated in 20.8% revision arthroplasties.Bone scans (technetium, indium) were performed on 9.9% patients and it was positive for osteomyelitis in just one revisionarthroplasty. Intra-operative pathology was read as consistent with acute inflammation in 11.9% revision arthroplasties.The positive and negative predictive values for intra-operative pathology were 56.7% and 71.6% respectively.Conclusion: All of the perioperative tests had a high specificity and negative predictive value, but low sensitivity andpositive predictive value.Level of evidence: III %U https://abjs.mums.ac.ir/article_10283_1c3f50cf21e4116d392ee2ba77841aab.pdf