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The purpose of this study was to evaluate the predictive value of red cell distribution width (RDW) on the electrocardiographic no-reflow phenomenon in patients undergoing primary percutaneous coronary intervention (PCI).

One-hundred consecutive patients (mean age 61.3 ± 12.8 years and male 77%) with ST-elevation myocardial infarction, who were treated with primary PCI, were analyzed prospectively. RDW and high sensitive C reactive protein (hs-CRP) were measured. The sum of ST-segment elevation was obtained immediately before and 60 min after the restoration of coronary flow. The difference between two measurements was accepted as the amount of ST-segment resolution and was expressed as ∑STR. ∑STR < 50% was accepted as electrocardiographic sign of no-reflow phenomenon.

There were 30 patients in the no-reflow group (Group 1) and 70 patients …