1. Contribution of lung ultrasound in diagnosis of community-acquired pneumonia in the emergency department: a prospective multicentre study
- Author
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Philippe Le Conte, Quentin Le Bastard, Denis Haroche, Benjamin Gaborit, Estelle Boucher, Hugo De Carvalho, François Javaudin, Nicolas Marjanovic, Emmanuel Montassier, Centre hospitalier universitaire de Nantes (CHU Nantes), Université de Nantes (UN), Centre hospitalier universitaire de Poitiers (CHU Poitiers), Centre d’Investigation Clinique de Nantes (CIC Nantes), Université de Nantes (UN)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre hospitalier universitaire de Nantes (CHU Nantes), Centre hospitalier de Saint-Nazaire, Centre Hospitalier Départemental Vendée (CHDV), and Malbec, Odile
- Subjects
Male ,medicine.medical_specialty ,Concordance ,[SDV]Life Sciences [q-bio] ,infectious diseases ,03 medical and health sciences ,respiratory infections ,0302 clinical medicine ,Community-acquired pneumonia ,Intensive care ,accident & emergency medicine ,Medicine ,Humans ,030212 general & internal medicine ,Prospective Studies ,Medical prescription ,Lung ,Aged ,Ultrasonography ,Aged, 80 and over ,business.industry ,ultrasound ,General Medicine ,Emergency department ,Pneumonia ,Middle Aged ,medicine.disease ,3. Good health ,Community-Acquired Infections ,[SDV] Life Sciences [q-bio] ,030228 respiratory system ,Radiological weapon ,Emergency medicine ,Emergency Medicine ,Observational study ,Female ,business ,Emergency Service, Hospital - Abstract
Lung ultrasound (LUS) can help clinicians make a timely diagnosis of community-acquired pneumonia (CAP).ObjectivesTo assess if LUS can improve diagnosis and antibiotic initiation in emergency department (ED) patients with suspected CAP.DesignA prospective observational study.SettingsFour EDs.ParticipantsThe study included 150 patients older than 18 years with a clinical suspicion of CAP, of which 2 were subsequently excluded (incorrect identification), leaving 148 patients (70 women and 78 men, average age 72±18 years). Exclusion criteria included a life-threatening condition with do-not-resuscitate-order or patient requiring immediate intensive care.InterventionsAfter routine diagnostic procedure (clinical, radiological and laboratory tests), the attending emergency physician established a clinical CAP probability according to a four-level Likert scale (definite, probable, possible and excluded). An LUS was then performed, and another CAP probability was established based on the ultrasound result. An adjudication committee composed of three independent experts established the final CAP probability at hospital discharge.Primary and secondary outcome measuresPrimary objective was to assess concordance rate of CAP diagnostic probabilities between routine diagnosis procedure or LUS and the final probability of the adjudication committee. Secondary objectives were to assess changes in CAP probability induced by LUS, and changes in antibiotic treatment initiation.ResultsOverall, 27% (95% CI 20 to 35) of the routine procedure CAP classifications and 77% (95% CI 71 to 84) of the LUS CAP classifications were concordant with the adjudication committee classifications. Cohen’s kappa coefficients between routine diagnosis procedure and LUS, according to adjudication committee, were 0.07 (95% CI 0.04 to 0.11) and 0.61 (95% CI 0.55 to 0.66), respectively. The modified probabilities for the diagnosis of CAP after LUS resulted in changes in antibiotic prescriptions in 32% (95% CI 25 to 40) of the cases.ConclusionIn our study, LUS was a powerful tool to improve CAP diagnosis in the ED, reducing diagnostic uncertainty from 73% to 14%.Trial registration numberNCT03411824.
- Published
- 2021
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