Association of age and packed red blood cell transfusion to 1-year survival – an observational study of ICU patients
Article first published online: 11 MAR 2013
© 2013 The Authors. Transfusion Medicine © 2013 British Blood Transfusion Society
Volume 23, Issue 4, pages 231–237, August 2013
How to Cite
Mudumbai, S. C., Cronkite, R., Hu, K. U., Heidenreich, P. A., Gonzalez, C., Bertaccini, E., Stafford, R. S., Cason, B. A., Mariano, E. R. and Wagner, T. (2013), Association of age and packed red blood cell transfusion to 1-year survival – an observational study of ICU patients. Transfusion Medicine, 23: 231–237. doi: 10.1111/tme.12010
- Issue published online: 18 JUL 2013
- Article first published online: 11 MAR 2013
- Manuscript Accepted: 9 JAN 2013
- Manuscript Revised: 31 DEC 2012
- Manuscript Received: 10 JUL 2012
- Veterans Affairs Health Services Research and Development. Grant Number: LIP 62-101
- intensive care unit;
To compare the 1-year survival for different age strata of intensive care unit (ICU) patients after receipt of packed red blood cell (PRBC) transfusions.
Despite guidelines documenting risks of PRBC transfusion and data showing that increasing age is associated with ICU mortality, little data exist on whether age alters the transfusion-related risk of decreased survival.
We retrospectively examined data on 2393 consecutive male ICU patients admitted to a tertiary-care hospital from 2003 to 2009 in age strata: 21–50, 51–60, 61–70, 71–80 and >80 years. We calculated Cox regression models to determine the modifying effect of age on the impact of PRBC transfusion on 1-year survival by using interaction terms between receipt of transfusion and age strata, controlling for type of admission and Charlson co-morbidity indices. We also examined the distribution of admission haematocrit and whether transfusion rates differed by age strata.
All age strata experienced statistically similar risks of decreased 1-year survival after receipt of PRBC transfusions. However, patients age >80 were more likely than younger cohorts to have haematocrits of 25–30% at admission and were transfused at approximately twice the rate of each of the younger age strata.
We found no significant interaction between receipt of red cell transfusion and age, as variables, and survival at 1 year as an outcome.