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dc.contributor.authorLangvatn, Håkonen_US
dc.contributor.authorBartz-Johannessen, Christofferen_US
dc.contributor.authorSchrama, Johannes Cornelisen_US
dc.contributor.authorHallan, Geiren_US
dc.contributor.authorFurnes, Oveen_US
dc.contributor.authorLingaas, Egilen_US
dc.contributor.authorWalenkamp, Geerten_US
dc.contributor.authorEngesæter, Lars B.en_US
dc.contributor.authorDale, Håvarden_US
dc.PublishedLangvatn H, Bartz-Johannessen CA, Schrama JC, Hallan G, Furnes O, Lingaas E, Walenkamp, Engesæter LB, Dale H. Operating room ventilation-Validation of reported data on 108 067 primary total hip arthroplasties in the Norwegian Arthroplasty Register. Journal of Evaluation In Clinical Practice. 2020;26:1022–1029eng
dc.description.abstractRationale, aims, and objectives: The true effect of laminar airflow (LAF) systems on postoperative infection is disputed, partly due to uncertainty regarding the validity of ventilation data in register studies. The aim of this study was to validate the information on operating room (OR) ventilation reported by the orthopaedic surgeons to the Norwegian Arthroplasty Register (NAR) after primary total hip arthroplasty (THA). Method: Forty of the 62 public orthopaedic units performing primary THA in Norway during the period 1987‐2015 were included. The hospitals' current and previous ventilation systems were evaluated in cooperation with the hospitals head engineer. We identified the type of ventilation system reported to the NAR and compared the information with the factual ventilation in the specific ORs at the time of primary THA. Results: A total of 108 067 primary THAs were eligible for assessment. None of the hospitals performed THA in true “greenhouse” (GH) ventilation. Fifty‐seven percent of the primary THAs were performed in ORs with LAF and 43% in ORs with conventional, turbulent ventilation (CV). Comparing the reported data with the validated data, LAF was reported with a sensitivity of 86%, specificity of 89%, and positive predictive value (PPV) of 92%, with an accuracy of 88%. CV was reported with a sensitivity of 89%, specificity of 87%, and PPV of 84%, with an accuracy of 88%. The total, mean misreporting rate was 12%. Conclusions: Surgeons were not fully aware of what kind of ventilation system they operated in. This study indicates that conclusions based on ventilation data reported on THA in the NAR should not be interpreted without considering the inaccuracy of the data.en_US
dc.rightsAttribution-Non Commercial-No Derivatives CC BY-NC-NDeng
dc.titleOperating room ventilation-Validation of reported data on 108 067 primary total hip arthroplasties in the Norwegian Arthroplasty Registeren_US
dc.typePeer reviewed
dc.typeJournal article
dc.rights.holderCopyright 2019 The Authors
dc.source.journalJournal of Evaluation In Clinical Practice

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