Using red blood cell distribution width to predict death after abdominal aortic aneurysm rupture

Area of Science:

• Cardiovascular Medicine
• Hematology
• Critical Care Medicine

Background:

• Abdominal aortic aneurysm (AAA) rupture is a life-threatening condition.
• Predicting mortality risk in AAA rupture patients is crucial for clinical management.
• Red blood cell distribution width (RDW) is a readily available hematological parameter.

Purpose of the Study:

• To investigate the association between RDW levels and all-cause mortality in patients with ruptured AAA.
• To develop predictive models for mortality risk stratification in this patient population.

Main Methods:

• Retrospective cohort study utilizing the MIMIC-III database (2001-2012).
• Included 392 U.S. adults admitted to ICU post-AAA rupture.
• Logistic regression models analyzed RDW's association with 30-day and 90-day all-cause mortality, controlling for covariates.

Main Results:

• Patients with higher RDW levels (>13.8%) exhibited significantly higher 30-day and 90-day all-cause mortality.
• Elevated RDW correlated with increased incidence of congestive heart failure, renal failure, and coagulation disorders.
• Multivariate analysis confirmed higher RDW as a significant predictor of mortality (OR > 1).

Conclusions:

• Higher RDW levels are independently associated with increased all-cause mortality in ruptured AAA patients.
• RDW is a potential biomarker for predicting mortality risk in this critical group.
• Incorporating RDW into clinical practice may improve risk stratification for ruptured AAA.