The role of serum red blood cell distribution width level in predicting the short term mortality of community-acguired pneumonia, acute attack chronic pulmonary disease, and acute pulmonary thromboembolism

Year 2021, , 192 - 197, 14.07.2021

Semih Aydemir , Derya Hoşgün

https://doi.org/10.38053/acmj.888740

Abstract

Background: There is a growing concern in inflammatory parameters that are commonly used in routine practice and can be measured cost-effectively for predicting mortality community-acquired pneumonia (CAP), acute-attack chronic obstructive pulmonary disease (COPD), and acute pulmonary thromboembolism (PTE). Red blood cell distribution width (RDW) is a significant parameter indicating the heterogeneity of the size of red blood cells (RBCs). The present study was designed to compare RDW levels among patients that were hospitalized due to CAP, acute PTE, and acute-attack COPD, all of which are characterized by persistent inflammation, and to investigate the role of RDW in predicting 30-day mortality.
Materials and Methods: The RDW levels measured on admission in all three groups were evaluated retrospectively.
Results:The 554 patients comprised 320 (57.76%) men and 234 (42.24%) women with a mean age of 67.074±14.73 years. The patients comprised 92 (16.6%) CAP, 265 (47.8%) acute PTE, and 197 (35.6%) acute-attack COPD patients. Mean RDW was 14.42%±2.73% (range, 3.77-28%) while it was 14.88%±3.30% in the CAP group, 13.21%±2.77% in the COPD group, and 15.15%±2.12% in the PTE group. In the COPD, CAP, and PTE groups, RDW levels were significantly higher in patients with 30-day mortality compared to those without mortality (p=0.008, p=0.020, and p<0.05, respectively).
Conclusion: RDW is a practical, inexpensive and automatically reported blood test parameter which can be used along with scoring systems in the prediction of prognosis and ICU requirement and also in the follow-up of patients with diseases that are characterized by persistent inflammation in their pathophysiology.

Keywords

RDW, COPD, CAP, PTE

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