• Medicina intensiva · Aug 2021

    Risk factors associated to noninvasive ventilation failure in primary influenza A pneumonia in the critical care setting.

    • H Hernández Garcés, A Navarro Lacalle, L Lizama López, and R Zaragoza Crespo.
    • Servicio de Medicina Intensiva, Hospital Universitario Doctor Peset, Valencia, España. Electronic address: hektorhernandez84@gmail.com.
    • Med Intensiva. 2021 Aug 1; 45 (6): 347-353.

    ObjectiveTo evaluate the risk factors associated to noninvasive mechanical ventilation (NIV) failure in patients with primary pneumonia due to influenza A (H1N1)pdm09 virus admitted to the intensive care unit (ICU), and to demonstrate the association of NIV failure to increased mortality and longer stays.DesignA cohort study was carried out.ScopeA mixed ICU (16 beds) in a teaching hospital.PatientsAdult patients admitted to the ICU with a diagnosis of pneumonia due to influenza A (H1N1)pdm09 virus requiring mechanical ventilation.MeasurementsAge, sex, severity scores, administration of corticosteroids, oseltamivir within 72h of symptoms onset, days of symptoms prior to admission, affected quadrants, hemodynamic parameters, renal failure, laboratory test data on admission, mortality and stay in ICU and in hospital.ResultsA total of 54 patients were admitted to the ICU and 49 were ventilated; 29 were females (59.2%), and the mean age±standard deviation was 66.77±14.77 years. Forty-three patients (87.75%) were ventilated with NIV, and 18 (41.9%) of them failed. Patients with NIV failure were younger (63 vs. 74 years; P=.04), with a higher SOFA score (7 vs. 4; P=.01) and greater early hemodynamic failure (61.1 vs. 8%; P=.01). In addition, they presented longer ICU (26.28 vs. 6.88 days; P=.01) and hospital stay (32.78 vs. 18.8 days; P=.01). The ICU mortality rate was also higher in the NIV failure group (38.9 vs. 0%; P=.02). In the multivariate analysis, corticosteroid therapy (OR 7.08; 95% CI 1.23-40.50) and early hemodynamic failure (OR 14.77; 95% CI 2.34-92.97) were identified as independent risk factors for NIV failure.ConclusionsTreatment with corticosteroids and early hemodynamic failure were associated to NIV failure in patients with primary pneumonia due to influenza A (H1N1)pdm09 virus infection admitted to the ICU. The failure of NIV was associated to increased mortality.Copyright © 2019 Elsevier España, S.L.U. y SEMICYUC. All rights reserved.

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