Author/Authors :
Satoh، نويسنده , , Shinji and Inoue، نويسنده , , Hiroko and Omura، نويسنده , , Soichiro and Ejima، نويسنده , , Emiko and Shimozono، نويسنده , , Koutastu and Hayashi، نويسنده , , Makiko and Mori، نويسنده , , Takahiro and Takenaka، نويسنده , , Katsuhiko and Kawamura، نويسنده , , Natsumi and Numaguchi، نويسنده , , Kotaro and Mori، نويسنده , , Etsuo and Asoh، نويسنده , , Akemi and Nakamura، نويسنده , , Toshihiro، نويسنده ,
Abstract :
We evaluated a hypothesis that thrombus aspiration with distal protection is superior to simple thrombus aspiration in patients treated with primary percutaneous coronary intervention (PCI). A total of 176 consecutive patients with ST-segment elevation myocardial infarction were enrolled in this study and assigned to either the thrombus aspiration group (A, n = 104) or the thrombus aspiration with distal protection group using a filter device system (A + DP, n = 72). We compared the angiographic reperfusion grade, left ventricular (LV) function, and clinical outcomes between the 2 groups. There were no significant differences in age, gender distribution, the onset-to-reperfusion time, the peak levels of creatine kinase, or 6-month mortality between the 2 groups. The rate of achieving a Thrombolysis In Myocardial Infarction flow grade of 3 and a myocardial blush grade of 3 was higher in the A + DP group than in the A group. Among the patients who underwent follow-up catheterization 6 months after PCI (A, n = 62; A + DP, n = 52), there were no significant differences in the LV end-diastolic volume index, LV end-systolic volume index, or LV ejection fraction between the 2 groups at the time of PCI or 6 months after PCI. In conclusion, thrombus aspiration with distal protection may be more effective in initially restoring the coronary blood flow than thrombus aspiration alone, although it may not be superior to thrombus aspiration in preventing LV remodeling or preserving the LV function in patients with ST-segment elevation myocardial infarction.
