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Figure 2 (A) Myocardial contrast echocardiography score index (MCSEI) as a semiquantitative index of impaired tissue perfusion in the three groups of patients. p < 0.05 by analysis of variance (ANOVA) upstream tirofiban versus high-dose bolus (HDB) versus abciximab. (B) Patients perfused by myocardial contrast echocardiography (MCE) among the three therapeutic regimen groups. p = 0.04 by ANOVA upstream tirofiban vs. HDB vs. abciximab.