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Multiple studies have demonstrated the association of red cell distribution width (RDW) with the ultrasound parameters of both systolic and diastolic heart dysfunction. We aimed to further investigate the clinical associations of RDW in the setting of ST-elevation myocardial infarction (STEMI) and to comparatively evaluate its predictive properties regarding systolic and diastolic dysfunction.  A total of 89 patients with STEMI were prospectively analyzed. RDW was obtained at the time of STEMI and compared to the parameters of systolic and diastolic dysfunction obtained by transthoracic heart ultrasound on the 5th through 7th day post-STEMI.  The median RDW was 13.9%, and among other factors, RDW was significantly associated with older age ( P  < .001), arterial hypertension ( P  = .017), hyperlipoproteinemia 2, nonsmoking ( P  = .027), increased thrombolysis in myocardial infarction score ( P  = .004), and multivessel disease ( P  = .007). A higher RDW was observed in patients with parameters that indicated systolic and diastolic dysfunction (ejection fraction of the left ventricle < 50% [ P  = .009], early/late diastolic filling wave ratio [E/A] < 1 [ P  = .001], ratio of peak early transmitral velocity and early diastolic annular velocity [E/E′] >10 [ P  < .001], and combined E/A < 1 and E/E′ > 10 [ P  < .001]). The best discriminatory properties were observed for combined E/A < 1 and E/E′ > 10. RDW remained significantly associated with the aforementioned parameters in a series of multivariate regression models.  Elevated RDW is significantly associated with the parameters of systolic and diastolic dysfunction even after adjusting for several confounding factors in the setting of STEMI and subsequent percutaneous coronary intervention. RDW seems to be better at discriminating patients with diastolic rather than systolic dysfunction.

medicine

High red cell distribution width at the time of ST segment elevation myocardial infarction is better at predicting diastolic than systolic left ventricular dysfunction