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Abstract
Around one-third of patients diagnosed with COVID-19 develop a severe illness that requires admission to the Intensive Care Unit (ICU). In clinical practice, clinicians have learned that patients admitted to the ICU due to severe COVID-19 frequently develop ventilator-associated lower respiratory tract infections (VA-LRTI). This study aims to describe the clinical characteristics, the factors associated with VA-LRTI, and its impact on clinical outcomes in patients with severe COVID-19. This was a multicentre, observational cohort study conducted in ten countries in Latin America and Europe. We included patients with confirmed rtPCR for SARS-CoV-2 requiring ICU admission and endotracheal intubation. Only patients with a microbiological and clinical diagnosis of VA-LRTI were included. Multivariate Logistic regression analyses and Random Forest were conducted to determine the risk factors for VA-LRTI and its clinical impact in patients with severe COVID-19. In our study cohort of 3287 patients, VA-LRTI was diagnosed in 28.8% [948/3287]. The cumulative incidence of ventilator-associated pneumonia (VAP) was 18.6% [610/3287], followed by ventilator-associated tracheobronchitis (VAT) 10.3% [338/3287]. A total of 1252 bacteria species were isolated. The most frequently isolated pathogens were Pseudomonas aeruginosa (21.2% [266/1252]), followed by Klebsiella pneumoniae (19.1% [239/1252]) and Staphylococcus aureus (15.5% [194/1,252]). The factors independently associated with the development of VA-LRTI were prolonged stay under invasive mechanical ventilation, AKI during ICU stay, and the number of comorbidities. Regarding the clinical impact of VA-LRTI, patients with VAP had an increased risk of hospital mortality (OR [95% CI] of 1.81 [1.40–2.34]), while VAT was not associated with increased hospital mortality (OR [95% CI] of 1.34 [0.98–1.83]). VA-LRTI, often with difficult-to-treat bacteria, is frequent in patients admitted to the ICU due to severe COVID-19 and is associated with worse clinical outcomes, including higher mortality. Identifying risk factors for VA-LRTI might allow the early patient diagnosis to improve clinical outcomes.
Trial registration: This is a prospective observational study; therefore, no health care interventions were applied to participants, and trial registration is not applicable.
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1 Universidad de La Sabana, Unisabana Center for Translational Science, Chía, Colombia (GRID:grid.412166.6) (ISNI:0000 0001 2111 4451); Clinica Universidad de La Sabana, Chía, Colombia (GRID:grid.412166.6) (ISNI:0000 0001 2111 4451); University of Oxford, Pandemic Sciences Institute, Oxford, UK (GRID:grid.4991.5) (ISNI:0000 0004 1936 8948)
2 Hospital Universitari Joan XXIII, Critical Care Department, URV/IISPV/CIBERES, Tarragona, Spain (GRID:grid.411435.6) (ISNI:0000 0004 1767 4677)
3 Universidad de La Sabana, Unisabana Center for Translational Science, Chía, Colombia (GRID:grid.412166.6) (ISNI:0000 0001 2111 4451); Clinica Universidad de La Sabana, Chía, Colombia (GRID:grid.412166.6) (ISNI:0000 0001 2111 4451)
4 Universidad de La Sabana, Unisabana Center for Translational Science, Chía, Colombia (GRID:grid.412166.6) (ISNI:0000 0001 2111 4451)
5 Fundación Valle del Lili, Cali, Colombia (GRID:grid.477264.4)
6 Pontificia Universidad Católica de Chile, Critical Care Department, Santiago, Chile (GRID:grid.7870.8) (ISNI:0000 0001 2157 0406)
7 Fundación Clínica Shaio, Bogotá, Colombia (GRID:grid.7870.8)
8 Eugenio Espejo Hospital of Specialties, Quito, Ecuador (GRID:grid.7870.8)
9 Universitat Autonoma Barcelona, Critical Care Department, Hospital Universitari Parc Taulí, Sabadell, Spain (GRID:grid.7080.f) (ISNI:0000 0001 2296 0625)
10 Hospital Universitario Dr Negrín, Las Palmas de Gran Canaria, Spain (GRID:grid.411250.3) (ISNI:0000 0004 0399 7109); Universidad Fernando Pessoa, Canarias, Spain (GRID:grid.512367.4)
11 Vall d’Hebron Hospital Universitari, Barcelona, Spain (GRID:grid.411083.f) (ISNI:0000 0001 0675 8654)
12 Guadalajara University Hospital, Guadalajara, Spain (GRID:grid.411098.5) (ISNI:0000 0004 1767 639X)
13 Son Llatzer University Hospital, Palma de Mallorca, Spain (GRID:grid.413457.0) (ISNI:0000 0004 1767 6285)
14 Fundación Clínica Shaio, Bogotá, Colombia (GRID:grid.412166.6)
15 La Cardio, Fundación Neumológica Colombiana, Bogotá, Colombia (GRID:grid.492703.b) (ISNI:0000 0004 0440 9989)
16 Jerez University Hospital, Jerez de la Frontera, Spain (GRID:grid.492703.b)
17 Hospital Universitario Virgen del Valme, Critical Care Department, Sevilla, Spain (GRID:grid.412800.f) (ISNI:0000 0004 1768 1690)
18 Hospital Providencial Nuestra Señora de Gracia, Zaragoza, Spain (GRID:grid.412800.f)
19 Hospital Universitario Miguel Servet, Critical Care Department, Zaragoza, Spain (GRID:grid.411106.3) (ISNI:0000 0000 9854 2756)
20 Royal Infirmary of Edinburgh, Intensive Care Unit, Edinburgh, UK (GRID:grid.418716.d) (ISNI:0000 0001 0709 1919); The University of Edinburgh, Centre for Inflammation Research, Edinburgh, Scotland, UK (GRID:grid.4305.2) (ISNI:0000 0004 1936 7988)
21 St. James’s Hospital, Department of Intensive Care Medicine, Multidisciplinary Intensive Care Research Organization (MICRO), Dublin, UK (GRID:grid.443984.6) (ISNI:0000 0000 8813 7132)
22 Hospital Juárez de México, Critical Care Unit, Mexico, Mexico (GRID:grid.414788.6)
23 Fundación Clínica Shaio, Bogotá, Colombia (GRID:grid.414788.6)
24 Hospital Interzonal de Agudos San Martín de La Plata, La Plata, Argentina (GRID:grid.414788.6)
25 Hospital Santa Clara, Bogota, Colombia (GRID:grid.414788.6)
26 Hospital Español, Intensive Care Unit, Montevideo, Uruguay (GRID:grid.414788.6)
27 UCI Hospital Universitario Virgen de Valme, Seville, Spain (GRID:grid.412800.f) (ISNI:0000 0004 1768 1690)
28 UCI Hospital Quirón, Huelva, Spain (GRID:grid.412800.f)
29 UCI Hospital Universitario Puerto Real, Cádiz, Spain (GRID:grid.411254.7)
30 UCI Hospital Universitario Virgen de la Macarena, Seville, Spain (GRID:grid.411375.5) (ISNI:0000 0004 1768 164X)
31 UCI Hospital Universitario Reina Sofía, Córdoba, Spain (GRID:grid.411349.a) (ISNI:0000 0004 1771 4667)
32 UCI Hospital Nuestra Señora de Gracia, Zaragoza, Spain (GRID:grid.411349.a)
33 UCI Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain (GRID:grid.411050.1) (ISNI:0000 0004 1767 4212)
34 UCI Hospital General San Jorge, Huesca, Spain (GRID:grid.415076.1) (ISNI:0000 0004 1765 5935)
35 UCI Hospital Obispo Polanco, Teruel, Spain (GRID:grid.414940.c) (ISNI:0000 0004 1794 9861)
36 UCI Hospital Universitario San Agustín, Avilés, Spain (GRID:grid.414940.c)
37 UCI Hospital Universitario Central de Asturias, Oviedo, Spain (GRID:grid.411052.3) (ISNI:0000 0001 2176 9028)
38 UCI Hospital Cabueñes, Gijón, Spain (GRID:grid.414440.1) (ISNI:0000 0000 9314 4177)
39 UCI Hospital Quirón Salud Palmaplanas, Palma de Mallorca, Spain (GRID:grid.413457.0)
40 UCI Hospital Universitario Son Espases, Palma de Mallorca, Spain (GRID:grid.411164.7) (ISNI:0000 0004 1796 5984)
41 UCI Hospital Comarcal d’Inca, Inca, Spain (GRID:grid.490114.9)
42 UCI Hospital Mateu Orfila, Mao, Spain (GRID:grid.490114.9)
43 UCI Complejo Hospitalario Universitario Insular—Materno Infantil, Las Palmas de Gran Canaria, Spain (GRID:grid.411322.7) (ISNI:0000 0004 1771 2848)
44 UCI Hospital General de la Palma, Tenerife, Spain (GRID:grid.411322.7)
45 UCI Hospital Universitari de Tarragona Joan XXIII, Tarragona, Spain (GRID:grid.411435.6) (ISNI:0000 0004 1767 4677)
46 UCI Hospital Universitari Arnau de Vilanova, Lleida, Spain (GRID:grid.411443.7) (ISNI:0000 0004 1765 7340)
47 UCI Hospital Verge de la Cinta, Tortosa, Spain (GRID:grid.490132.d)
48 UCI Hospital del Mar, Barcelona, Spain (GRID:grid.411142.3) (ISNI:0000 0004 1767 8811)
49 UCI Hospital Mutua de Terrasa, Terrasa, Spain (GRID:grid.411142.3)
50 UCI Hospital Sant Joan, Reus, Spain (GRID:grid.411136.0) (ISNI:0000 0004 1765 529X)
51 UCI Hospital Parc Tauli, Sabadell, Spain (GRID:grid.414560.2) (ISNI:0000 0004 0506 7757)
52 UCI Hospital Universitario Marqués de Valdecillas, Santander, Spain (GRID:grid.414560.2)
53 UCI Hospital Universitario de Guadalajara, Guadalajara, Spain (GRID:grid.411098.5) (ISNI:0000 0004 1767 639X)
54 UCI Hospital Nuestra Señora del Prado, Toledo, Spain (GRID:grid.477416.7)
55 UCI Hospital Virgen de la Concha, Zamora, Spain (GRID:grid.413506.5) (ISNI:0000 0000 9961 7465)
56 UCI Complejo Asistencial de Segovia, Segovia, Spain (GRID:grid.413506.5)
57 UCI Hospital universitario de Burgos, Burgos, Spain (GRID:grid.459669.1) (ISNI:0000 0004 1771 1036)
58 UCI Hospital Clínica de Salamanca, Salamanca, Spain (GRID:grid.459669.1)
59 UCI Hospital Universitario de Ceuta, Ceuta, Spain (GRID:grid.459669.1)
60 UCI Hospital San Pedro de Alcántara, Cáceres, Spain (GRID:grid.413393.f) (ISNI:0000 0004 1771 1124)
61 UCI Hospital de Mérida, Mérida, Spain (GRID:grid.413393.f)
62 UCI Hospital Montecelo, Pontevedra, Spain (GRID:grid.414863.c) (ISNI:0000 0000 9921 6370)
63 UCI CHUAC A Coruña, A Coruña, Spain (GRID:grid.414863.c)
64 UCI Centro Hospital Universitario de Ferrol, Ferrol, Spain (GRID:grid.414863.c)
65 UCI Hospitalario Clínico Universitario de Santiago, Santiago de Compostela, Spain (GRID:grid.11794.3a) (ISNI:0000000109410645)
66 UCI Hospital Lucus Augusti, Lugo, Spain (GRID:grid.414792.d) (ISNI:0000 0004 0579 2350)
67 UCI IFEMA, Madrid, Spain (GRID:grid.414792.d)
68 UCI Hospital Príncipe de Asturias, Madrid, Spain (GRID:grid.411336.2) (ISNI:0000 0004 1765 5855)
69 UCI Hospital de la Princesa, Madrid, Spain (GRID:grid.411251.2) (ISNI:0000 0004 1767 647X)
70 UCI Hospital Clinico San Carlos, Madrid, Spain (GRID:grid.411068.a) (ISNI:0000 0001 0671 5785)
71 UCI Hospital HLA la Moncloa, Madrid, Spain (GRID:grid.411068.a)
72 UCI Hospital Morales Meseguer, Murcia, Spain (GRID:grid.411101.4) (ISNI:0000 0004 1765 5898)
73 UCI Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain (GRID:grid.411372.2) (ISNI:0000 0001 0534 3000)
74 UCI Hospital Reina Sofía, Murcia, Spain (GRID:grid.411089.5) (ISNI:0000 0004 1768 5165)
75 UCI Hospital Santa Lucía, Cartagena, Spain (GRID:grid.411089.5)
76 UCI Hospital Rafael Méndez, Lorca, Spain (GRID:grid.490171.a) (ISNI:0000 0004 1793 8687)
77 UCI Hospital Reina Sofía, Tudela, Spain (GRID:grid.411349.a) (ISNI:0000 0004 1771 4667)
78 UCI Hospital García Orcoyen, Estella‐Lizarra, Spain (GRID:grid.411349.a)
79 UCI Hospital Universitario de Donostia, Donostia, Spain (GRID:grid.414651.3) (ISNI:0000 0000 9920 5292)
80 UCI Hospital Universitario de La Ribera, Alzira, Spain (GRID:grid.440284.e) (ISNI:0000 0005 0602 4350)
81 UCI Hospital Dr. Peset, Valencia, Spain (GRID:grid.411289.7) (ISNI:0000 0004 1770 9825)
82 UCI Hospital Universitari i Politècnic La Fe, Valencia, Spain (GRID:grid.84393.35) (ISNI:0000 0001 0360 9602)
83 UCI Hospital Clínico Universitario de Valencia, Valencia, Spain (GRID:grid.411308.f)
84 UCI Hospital Virgen de los Lirios de Alcoy, Alicante, Spain (GRID:grid.413522.3) (ISNI:0000 0000 9189 6148)
85 UCI Hospital Arnau de Vilanova, Valencia, Spain (GRID:grid.413937.b) (ISNI:0000 0004 1770 9606)
86 UCI Hospital Comarcal de Vinarós, Vinarós, Spain (GRID:grid.413937.b)
87 ICU Hospital nostra Señyora de Meritxell, Les Esclades, Spain (GRID:grid.413937.b)