Convalescent Stage Coronary Flow Reserve and Late Myocardial Morphologic Outcomes in Patients With First Anterior Acute Myocardial Infarction

Shimada Yoshihisa, Yoshiyama Minoru, Tanaka Hidemasa, Sato Hiroshi, Yoshida Ken, Jissho Satoshi, Uchida Eiji, Kamimori Kimio, Nakamura Yasuhiro, Iida Hidetaka, Takeuchi Kazuhide, Yoshikawa Junichi
2004 Circulation Journal  
Microvascular damage immediately after reperfusion therapy is an independent predictor of left ventricular function in patients with acute myocardial infarction (AMI). However, its recovery may vary among individuals and the relationship between convalescent stage microvasculature and late myocardial morphologic change is unclear. Methods and Results Patients treated with coronary angioplasty within 12 h of their first anterior AMI were enrolled in this study. Coronary flow reserve (CFR) was
more » ... sured 3 weeks post AMI, in both branches of the left coronary artery: culprit (left anterior descending artery: LAD) and non-culprit (left circumflex artery: LCX). Left ventriculography was performed at 3 weeks and 6 months post AMI and compared. Seventeen patients showed abnormal CFR in the LAD (Group 1: CFR<2), whereas 20 patients showed normal CFR (Group 2: CFR ≥2). Percent changes of end-diastolic volume tended to be higher in Group 1 than in Group 2 (11.8±21.6% vs -1.3± 14.4%, p=0.056), and %changes of end-systolic volume was significantly smaller in Group 2 (11.8±22.1% vs -8.7±25.1%, p<0.05). A statistically significant correlation was found between absolute and relative CFR in the LAD and %change of end-systolic volume (r=-0.58: p<0.001, and r=0.40: p<0.05, respectively). Conclusions Microvascular function in the convalescent stage may be related to these favorable changes. (Circ J 2004; 68: 208 -213)
doi:10.1253/circj.68.208 pmid:14993774 fatcat:fa6ao22iz5bhfabeottjsfe23i