International Journal of Critical Illness and Injury Science

ORIGINAL ARTICLE
Year
: 2022  |  Volume : 12  |  Issue : 3  |  Page : 121--126

Evaluation of time to death after admission to an intensive care unit and factors associated with mortality: A retrospective longitudinal study


Ana Luiza Mezzaroba, Alexandre S Larangeira, Fernanda K Morakami, Jair Jesus Junior, Amanda A Vieira, Marina M Costa, Fernanda M Kaneshima, Giovana Chiquetti, Ulisses E Colonheze, Giovanna C. S. Brunello, Lucienne T. Q. Cardoso, Tiemi Matsuo, Cintia M. C. Grion 
 Department of Clinical Medicine, Universidade Estadual De Londrina, Londrina, Brazil

Correspondence Address:
Prof. Cintia M. C. Grion
Divisão De Terapia Intensive, Rua Robert Koch 60, Vila Operária, Londrina 86038-440, Paraná
Brazil

Background: Among nonsurvivors admitted to the intensive care unit (ICU), some present early mortality while other patients, despite having a favorable evolution regarding the initial disease, die later due to complications related to hospitalization. This study aims to identify factors associated with the time until death after admission to an ICU of a university hospital. Methods: Retrospective longitudinal study that included adult patients admitted to the ICU between January 1, 2008, and December 31, 2017. Nonsurviving patients were divided into groups according to the length of time from admission to the ICU until death: Early (0–5 days), intermediate (6–28 days), and late (>28 days). Patients were considered septic if they had this diagnosis on admission to the ICU. Simple linear regression analysis was performed to evaluate the association between time to death over the years of the study. Multivariate cox regression was used to assess risk factors for the outcome in the ICU. Results: In total, 6596 patients were analyzed. Mortality rate was 32.9% in the ICU. Most deaths occurred in the early (42.8%) and intermediate periods (47.9%). Patients with three or more dysfunctions on admission were more likely to die early (P < 0.001). The diagnosis of sepsis was associated with a higher mortality rate. The multivariate analysis identified age >60 years (hazard ratio [HR] 1.009), male (HR 1.192), mechanical ventilation (HR 1.476), dialysis (HR 2.297), and sequential organ failure assessment >6 (HR 1.319) as risk factors for mortality. Conclusion: We found a higher proportion of early and intermediate deaths in the study period. The presence of three or more organ dysfunctions at ICU admission was associated with early death. The diagnosis of sepsis evident on ICU admission was associated with higher mortality.


How to cite this article:
Mezzaroba AL, Larangeira AS, Morakami FK, Junior JJ, Vieira AA, Costa MM, Kaneshima FM, Chiquetti G, Colonheze UE, Brunello GC, Cardoso LT, Matsuo T, Grion CM. Evaluation of time to death after admission to an intensive care unit and factors associated with mortality: A retrospective longitudinal study.Int J Crit Illn Inj Sci 2022;12:121-126


How to cite this URL:
Mezzaroba AL, Larangeira AS, Morakami FK, Junior JJ, Vieira AA, Costa MM, Kaneshima FM, Chiquetti G, Colonheze UE, Brunello GC, Cardoso LT, Matsuo T, Grion CM. Evaluation of time to death after admission to an intensive care unit and factors associated with mortality: A retrospective longitudinal study. Int J Crit Illn Inj Sci [serial online] 2022 [cited 2022 Oct 4 ];12:121-126
Available from: https://www.ijciis.org/article.asp?issn=2229-5151;year=2022;volume=12;issue=3;spage=121;epage=126;aulast=Mezzaroba;type=0