Delay in diagnosis of influenza A (H1N1)pdm09 virus infection in critically ill patients and impact on clinical outcome

Francisco Álvarez-Lerma, Judith Marín-Corral, Clara Vila, Joan Ramón Masclans, Francisco Javier González de Molina, Ignacio Martín Loeches, Sandra Barbadillo, Alejandro Rodríguez, Pedro Cobo, Javier Martins, Cecilia Carbayo, Emilio Robles-Musso, Antonio Cárdenas, Javier Fierro, Dolores Ocaña Fernández, Rafael Sierra, Ma Jesús Huertos, Ma Luz Carmona Pérez, Juan Carlos Pozo Laderas, R. GuerreroJuan Carlos Robles, Melissa Echevarría León, Alberto Bermejo Gómez, Enrique Márquez, Manuel Rodríguez-Carvajal, ángel Estella, José Pomares, José Luis Ballesteros, Olga Moreno Romero, Yolanda Fernández, Francisco Lobato, José F. Prieto, José Albofedo-Sánchez, Pilar Martínez, María Victoria de la Torre, María Nieto, Estefanía Cámara Sola, Miguel ángel Díaz Castellanos, Guillermo Sevilla Soler, Carlos Ortiz Leyba, José Garnacho-Montero, Rafael Hinojosa, Esteban Fernández, Ana Loza, Cristóbal León, Samuel González López, ángel Arenzana, Dolores Ocaña, Inés Navarrete, Medhi Zaheri Beryanaki, Ignacio Sánchez, Manuel Pérez Alé, Ana Ma Poullet Brea, Juan Francisco Machado Casas, Carlos Serón, Manuel Luis Avellanas, Arantxa Lander, S. Garrido Ramírez de Arellano, M. I. Marquina Lacueva, Pilar Luque, Elena Plumed Serrano, Juan Francisco Martín Lázaro, Carlos Sánchez Polo, Isabel Gutiérrez Cía, Belén Jiménez Bartolomé, Carlos López Núñez, Ignacio González, José Ignacio Tomás Marsilla, Clara Jaques Andrés, Pablo Gutiérrez Ibañes, Pilar Araujo Aguilar, Jose Ma Montón, Paloma Dorado Regil, Lisardo Iglesias, Carmen Pascual González, Brígida Quindós Fernández, Lorena Martín Iglesias, Lucía Viña Soria, Raquel Yano Escudero, Ma del Rosario Martínez Revuelta, José Ma Quiroga Ruiz, águeda García-Rodríguez, Marta Martín Cuadrado, Ana Luz Balán Mariño, Lorenzo Socias, Pedro Ibáñez, Marcío Borges-Sa, A. Socias, A. Del Castillo, Ricard Jordà Marcos, Cristina Muñoz, José M.Bonell Goytisolo, José Antonio Morales Carbonero, Ignacio Ayestarán, M. ángeles González López, Cecilia Vilanova Pàmies, Rossana Pérez Senoff, Marta Generelo López de Medrano, Sergio Ruiz-Santana, Juan José Díaz

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© 2016 The Author(s). Background: Patients infected with influenza A (H1N1)pdm09 virus requiring admission to the ICU remain an important source of mortality during the influenza season. The objective of the study was to assess the impact of a delay in diagnosis of community-acquired influenza A (H1N1)pdm09 virus infection on clinical outcome in critically ill patients admitted to the ICU. Methods: A prospective multicenter observational cohort study was based on data from the GETGAG/SEMICYUC registry (2009-2015) collected by 148 Spanish ICUs. All patients admitted to the ICU in which diagnosis of influenza A (H1N1)pdm09 virus infection had been established within the first week of hospitalization were included. Patients were classified into two groups according to the time at which the diagnosis was made: early (within the first 2 days of hospital admission) and late (between the 3rd and 7th day of hospital admission). Factors associated with a delay in diagnosis were assessed by logistic regression analysis. Results: In 2059 ICU patients diagnosed with influenza A (H1N1)pdm09 virus infection within the first 7 days of hospitalization, the diagnosis was established early in 1314 (63.8 %) patients and late in the remaining 745 (36.2 %). Independent variables related to a late diagnosis were: age (odds ratio (OR) = 1.02, 95 % confidence interval (CI) 1.01-1.03, P < 0.001); first seasonal period (2009-2012) (OR = 2.08, 95 % CI 1.64-2.63, P < 0.001); days of hospital stay before ICU admission (OR = 1.26, 95 % CI 1.17-1.35, P < 0.001); mechanical ventilation (OR = 1.58, 95 % CI 1.17-2.13, P = 0.002); and continuous venovenous hemofiltration (OR = 1.54, 95 % CI 1.08-2.18, P = 0.016). The intra-ICU mortality was significantly higher among patients with late diagnosis as compared with early diagnosis (26.9 % vs 17.1 %, P < 0.001). Diagnostic delay was one independent risk factor for mortality (OR = 1.36, 95 % CI 1.03-1.81, P < 0.001). Conclusions: Late diagnosis of community-acquired influenza A (H1N1)pdm09 virus infection is associated with a delay in ICU admission, greater possibilities of respiratory and renal failure, and higher mortality rate. Delay in diagnosis of flu is an independent variable related to death.
Idioma originalAnglès
Número d’article337
RevistaCritical Care
Volum20
Número1
DOIs
Estat de la publicacióPublicada - 23 d’oct. 2016

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