1. Community-acquired pneumonia in the emergency department: an algorithm to facilitate diagnosis and guide chest CT scan indication
- Author
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P. Loubet, S. Tubiana, Y.E. Claessens, L. Epelboin, C. Ficko, J. Le Bel, B. Rammaert, N. Garin, V. Prendki, J. Stirnemann, C. Leport, Y. Yazdanpanah, E. Varon, X. Duval, E. Bouvard, M.F. Carette, M.P. Debray, C. Mayaud, N. Houhou, M. Benjoar, F.X. Blanc, A.L. Brun, A. Khalil, H. Lefloch, J.M. Naccache, A. Abry, J.C. Allo, S. Andre, C. Andreotti, N. Baarir, M. Bendahou, L. Benlafia, J. Bernard, A. Berthoumieu, M.E. Billemont, J. Bokobza, E. Burggraff, P. Canavaggio, E. Casalino, S. Castro, C. Choquet, H. Clément, L. Colosi, A. Dabreteau, S. Damelincourt, S. Dautheville, M. Delay, S. Delerme, L. Depierre, F. Djamouri, F. Dumas, M.R.S. Fadel, A. Feydey, Y. Freund, L. Garcia, H. Goulet, P. Hausfater, E. Ilic-Habensus, M.O. Josse, J. Kansao, Y. Kieffer, F. Lecomte, K. Lemkarane, P. Madonna, O. Meyniard, L. Mzabi, D. Pariente, J. Pernet, F. Perruche, J.M. Piquet, R. Ranerison, P. Ray, F. Renai, E. Rouff, D. Saget, K. Saïdi, G. Sauvin, E. Trabattoni, N. Trimech, C. Auger, B. Pasquet, S. Tamazirt, J.M. Treluyer, F. Tubach, J. Wang, O. Chassany, C. Misse, AP-HP - Hôpital Bichat - Claude Bernard [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Infection, Anti-microbiens, Modélisation, Evolution (IAME (UMR_S_1137 / U1137)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP)-Université Sorbonne Paris Nord, Hôpital Princesse Grace [Monaco], Centre Hospitalier Andrée Rosemon [Cayenne, Guyane Française], Ecosystemes Amazoniens et Pathologie Tropicale (EPat), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Guyane (UG), CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Hôpital d'Instruction des Armées Begin, Service de Santé des Armées, Pharmacologie des anti-infectieux (PHAR), Université de Poitiers-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre hospitalier universitaire de Poitiers (CHU Poitiers), Faculté de Médecine et Médecine Dentaire [UCLouvain], Université Catholique de Louvain = Catholic University of Louvain (UCL), Hôpitaux Universitaires de Genève (HUG), Centre National de Référence des Pneumocoques (CNRP), Assistance Publique - Hôpitaux de Paris, Centre Hospitalier Intercommunal de Créteil (CHIC), Université Paris Diderot, Sorbonne Paris Cité, Paris, France, Université Paris Diderot - Paris 7 (UPD7), CIC1425 Bichat [AP-HP Hôpital Bichat - Claude Bernard] (INSERM), and Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de la Santé et de la Recherche Médicale (INSERM)
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Male ,0301 basic medicine ,Emergency Medical Services ,Chest CT scan ,[SDV]Life Sciences [q-bio] ,Tomography, X-Ray Computed/methods ,Chest ct ,Diagnostic methods ,Chest pain ,0302 clinical medicine ,Community-acquired pneumonia ,[SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases ,Diagnosis ,Public Health Surveillance ,030212 general & internal medicine ,ddc:616 ,Aged, 80 and over ,Emergency Medical Services/statistics & numerical data ,Area under the curve ,Disease Management ,General Medicine ,Middle Aged ,Polymerase chain reaction ,3. Good health ,Respiratory pathogens ,Community-Acquired Infections ,Infectious Diseases ,Cohort ,Female ,Radiography, Thoracic ,medicine.symptom ,Emergency Service, Hospital ,Algorithm ,Algorithms ,Microbiology (medical) ,Clinical Decision-Making ,030106 microbiology ,Sensitivity and Specificity ,03 medical and health sciences ,Community-Acquired Infections/diagnosis/epidemiology/microbiology ,medicine ,Humans ,Aged ,Respiratory viruses ,Emergency department ,business.industry ,Pneumonia ,medicine.disease ,ddc:618.97 ,Tomography, X-Ray Computed ,business ,Biomarkers ,Pneumonia/diagnosis/epidemiology/microbiology - Abstract
International audience; Objective: The aim was to create and validate a community-acquired pneumonia (CAP) diagnostic algorithm to facilitate diagnosis and guide chest computed tomography (CT) scan indication in patients with CAP suspicion in Emergency Departments (ED).Methods: We performed an analysis of CAP suspected patients enrolled in the ESCAPED study who had undergone chest CT scan and detection of respiratory pathogens through nasopharyngeal PCRs. An adjudication committee assigned the final CAP probability (reference standard). Variables associated with confirmed CAP were used to create weighted CAP diagnostic scores. We estimated the score values for which CT scans helped correctly identify CAP, therefore creating a CAP diagnosis algorithm. Algorithms were externally validated in an independent cohort of 200 patients consecutively admitted in a Swiss hospital for CAP suspicion.Results: Among the 319 patients included, 51% (163/319) were classified as confirmed CAP and 49% (156/319) as excluded CAP. Cough (weight = 1), chest pain (1), fever (1), positive PCR (except for rhinovirus) (1), C-reactive protein ≥50 mg/L (2) and chest X-ray parenchymal infiltrate (2) were associated with CAP. Patients with a score below 3 had a low probability of CAP (17%, 14/84), whereas those above 5 had a high probability (88%, 51/58). The algorithm (score calculation + CT scan in patients with score between 3 and 5) showed sensitivity 73% (95% CI 66-80), specificity 89% (95% CI 83-94), positive predictive value (PPV) 88% (95% CI 81-93), negative predictive value (NPV) 76% (95% CI 69-82) and area under the curve (AUC) 0.81 (95% CI 0.77-0.85). The algorithm displayed similar performance in the validation cohort (sensitivity 88% (95% CI 81-92), specificity 72% (95% CI 60-81), PPV 86% (95% CI 79-91), NPV 75% (95% CI 63-84) and AUC 0.80 (95% CI 0.73-0.87).Conclusion: Our CAP diagnostic algorithm may help reduce CAP misdiagnosis and optimize the use of chest CT scan.
- Published
- 2020
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