Comparison of syntax score and syntax score II to predict “no reflow phenomenon” in patients with ST-segment elevation myocardial infarction

This study enrolled 193 patients undergoing primary percutaneous coronary intervention for ST elevation myocardial infarction in whom 42 patients developed the no-reflow phenomenon. SS and SS II were calculated in all patients. Bland Altman analysis was used to compare receiver-operating characteristic (ROC) curve analysis results. SS and SS II values were significantly higher in the no-reflow group than the reflow group (28.3  ± 5.5 vs. 18.8 ± 10.1; p <  0.001 and 42.5 (22.1–58.5) vs. 26.1 (13–49.8); p <  0.001 respectively). SS II value>32.3 yielded an area under the curve value of 0.881 (95% CI 0.820 –0.942; p <  0.001) and independently predicted no-reflow with a sensitivity of 88% and a specificity of 80% (OR 1.150, 95% CI 1.047–1.263, p = 0.003). Comparison of ROC curve results with Bland Altman analysis showed that area under curve of SS II was larger than that of SS (0.881 vs. 0.785, p = 0. 01). SS II may be a more useful tool than SS for prediction no-reflow phenomenon after primary percutaneous coronary intervention in patients with ST elevation myocardial infarction.
Source: The International Journal of Cardiovascular Imaging - Category: Radiology Source Type: research