1. Comparative assessment of mortality risk factors between admission and follow-up models among patients hospitalized with COVID-19
- Author
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Guilherme A. Salzstein, Felippe Lazar Neto, Fábio C. de Assis, Marilia Ribeiro de Azevedo Aguiar, Júlio César de Oliveira, Rodrigo H. Kondo, Thaís Bastos, Gerhard da Paz Lauterbach, Augusto César Ferreira de Moraes, Felipe Carvalho Barros Sousa, André L. Cortez, Daniel Fernandes Duailibi, Fabíola Vieira Duarte Baptista, Milton A. Martins, Marcos Felipe D.S. Dias, Aline A. de Deus, and Joanne Alves Moreira
- Subjects
0301 basic medicine ,Male ,medicine.medical_treatment ,Comorbidity ,Infectious and parasitic diseases ,RC109-216 ,Cohort Studies ,0302 clinical medicine ,Risk Factors ,030212 general & internal medicine ,Covid-19 - Brasil ,Hospital Mortality ,Mortality rate ,Follow-up ,Hazard ratio ,General Medicine ,Middle Aged ,Prognosis ,Hospitalization ,Doentes hospitalizados ,Infectious Diseases ,Mortalidade ,Female ,Brazil ,Cohort study ,Microbiology (medical) ,medicine.medical_specialty ,Respiratory rate ,030106 microbiology ,Models, Biological ,Article ,03 medical and health sciences ,Internal medicine ,medicine ,Humans ,Mortality ,Proportional Hazards Models ,Retrospective Studies ,Mechanical ventilation ,Fatores de risco ,Proportional hazards model ,business.industry ,SARS-CoV-2 ,COVID-19 ,Retrospective cohort study ,medicine.disease ,Respiration, Artificial ,Coronavirus ,business ,Follow-Up Studies - Abstract
Objectives: This study aimed to compare differences in mortality risk factors between admission and follow-up incorporated models. Methods: A retrospective cohort study of 524 patients with confirmed COVID-19 infection admitted to a tertiary medical center in São Paulo, Brazil from 13 March to 30 April 2020. Data were collected on admission, and the third, eighth and fourteenth days of hospitalization. The hazard ratio (HR) was calculated and 28-day in-hospital mortality risk factors were compared between admission and follow-up models using a time-dependent Cox regression model. Results: Of 524 patients, 50.4% needed mechanical ventilation. The 28-day mortality rate was 32.8%. Compared with follow-up, admission models under-estimated the mortality HR for peripheral oxygen saturation 100 bpm (1.19 versus 2.04), respiratory rate >24/min (1.01 versus 1.82) and mechanical ventilation (1.92 versus 12.93). Low oxygen saturation, higher oxygen support and more biomarkers–including lactate dehydrogenase, C-reactive protein, neutrophil-lymphocyte ratio, and urea remained associated with mortality after adjustment for clinical factors at follow-up compared with only urea and oxygen support at admission. Conclusions: The inclusion of follow-up measurements changed mortality hazards of clinical signs and biomarkers. Low oxygen saturation, higher oxygen support, lactate dehydrogenase, C-reactive protein, neutrophil-lymphocyte ratio, and urea could help with prognosis of patients during follow-up.
- Published
- 2021