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Parada-Gereda HM, Avendaño JM, Melo JE, Ruiz CI, Castañeda MI, Medina-Parra J, Merchán-Chaverra R, Corzzo D, Molano-Franco D, Masclans JR. Association between ventilatory ratio and mortality in patients with acute respiratory distress syndrome and COVID 19: A multicenter, retrospective cohort study. BMC Pulm Med 2023; 23:425. [PMID: 37924051 PMCID: PMC10623871 DOI: 10.1186/s12890-023-02733-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 10/25/2023] [Indexed: 11/06/2023] Open
Abstract
BACKGROUND Mortality rates in patients with COVID-19 undergoing mechanical ventilation in the intensive care unit are high. The causes of this mortality have been rigorously investigated. The aim of the present study is to establish mortality risk factors related to lung mechanics measured at days 1 and 5 in patients with covid-19 ARDS managed with invasive mechanical ventilation in the intensive care unit. METHODS A retrospective observational multicenter study including consecutive patients with a confirmed diagnosis of COVID-19-induced ARDS, admitted to three institutions and seven intensive care units in the city of Bogota between May 20, 2020 and May 30, 2022 who required mechanical ventilation for at least five days. Data were collected from the medical records of patients who met the inclusion criteria on day 1 and day 5 of mechanical ventilation. The primary outcome assessed was mortality at day 30. RESULTS A total of 533 consecutive patients admitted with ARDS with COVID-19 were included. Ventilatory ratio, plateau pressure and driving pressure measured on day 5 were significantly higher in non-survivors (p < 0.05). Overall, 30-day follow-up mortality was 48.8%. The increases between day 1 and day 5 in the ventilatory ratio (OR 1.42, 95%CI 1.03-2.01, p = 0.04), driving pressure (OR 1.56, 95%CI 1.10-2.22, p = 0.01); and finally plateau pressure (OR 1.9, 95%CI 1.34-2.69, p = 0.001) were associated with an increased risk of death. There was no association between deterioration of PaO2/FIO2 index and mortality (OR 1.34, 95%CI 0.96-1.56, p = 0.053). CONCLUSIONS Ventilatory ratio, plateau pressure, driving pressure, and age were identified as independent risk factors for 30-day mortality in patients with ARDS due to COVID-19 on day 5 of invasive mechanical ventilation.
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Affiliation(s)
- Henry M Parada-Gereda
- Intensive Care Unit Clínica Reina Sofia, Clínica Colsanitas. Clinical Nutrition and Rehabilitation Research Group, Fundación Universitaria Sanitas. Grupo Keralty, Bogotá, Colombia.
| | - Janneth M Avendaño
- Intensive Care Unit Clínica Reina Sofia, Mujer y Pediátrica, Clínica Colsanitas, Clinical Nutrition and Rehabilitation Research Group, Fundación Universitaria Sanitas. Grupo Keralty, Bogotá, Colombia
| | - Johana E Melo
- Intensive Care Unit Clinica Universitaria Colombia, Fundacion Universitaria Sanitas. Grupo Keralty, Bogotá, Colombia
| | - Claudia I Ruiz
- Department Clínica Reina Sofía, Clínica Reina Sofia, Mujer y Pediátrica. Grupo Keralty, Bogotá, Colombia
| | | | - Jorge Medina-Parra
- Clinical Nutrition and Rehabilitation Research Group, Fundación Universitaria Sanitas. grupo Keralty, Bogotá, Colombia
| | - Ricardo Merchán-Chaverra
- Clinical Nutrition and Rehabilitation Research Group, Fundación Universitaria Sanitas. Clinica Santa Maria del Lago. Grupo Keralty, Bogota, Colombia
- Facultad de Medicina, Fundación Universitaria Sanitas, Bogotá, Colombia
- Latin American Nutrition Center (CELAN), Chía (Cundinamarca), Colombia
| | - Dinia Corzzo
- Intensive Care Unit Clínica Reina Sofía, Intensive Care Unit Center of Cancer Research and Treatment (CTIC), Bogotá, Colombia
| | - Daniel Molano-Franco
- Intensive Care Unit, Los Cobos Medical Center, Hospital San José, Center of Cancer Research and Treatment, Research Group Gribos, Bogotá, Colombia
| | - Joan Ramón Masclans
- Critical Care Department, Hospital del Mar Barcelona, Barcelona, Spain
- Critical Care Illness Research Group (GREPAC), IMIM. Department of Medicine and Life Sciences (MELIS), Universitat Pompeu Fabra (UPF), Barcelona, Spain
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