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Diabetes mellitus impairs myocardial oxygen metabolism even in non-infarct-related areas in patients with acute myocardial infarction.

Abstract：

BACKGROUND:Although diabetes is associated with poor clinical outcomes after acute myocardial infarction, to date there have been no reports focusing on the myocardial oxygen metabolism in these patients. Thus, we evaluated the myocardial oxygen metabolism in patients with and without diabetes suffering from acute myocardial infarction using carbon-11 acetate positron emission tomography. METHODS:20 patients (13 diabetic patients [group A] and 7 non-diabetic patients [group B]) underwent carbon-11 acetate positron emission tomography soon after the onset of acute myocardial infarction. The myocardial oxygen metabolism was evaluated within the infarct-related area and in the non infarct-related area. 6 healthy volunteers (group C) and 6 diabetic patients without coronary artery disease (group D) also participated as controls. RESULTS:There were no significant differences in gender, age, infarct-related artery, peak level of serum creatine phosphokinase, left-ventricular ejection fraction at onset, or the defect severity on myocardial perfusion images between group A and group B. In group A, the clearance rate (Kmono) of carbon-11 acetate in infarct-related area (0.042+/-0.010) was not significantly different from that in group B (0.049+/-0.016). In contrast, Kmono in non infarct-related area in group A (0.059+/-0.010) was significantly lower than that in group B (0.076+/-0.009; p=0.002), group C (0.072+/-0.004; p=0.026) and group D (0.078+/-0.005; p=0.001). CONCLUSIONS:These data indicate that the myocardial oxygen metabolism even in non infarct-related area in diabetic patients was impaired after the onset of acute myocardial infarction.

journal_name

Int J Cardiol

journal_title

International journal of cardiology

authors

Toyoda K,Nakano A,Fujibayashi Y,Yonekura Y,Ueda T,Lee JD

doi

10.1016/j.ijcard.2006.03.012

subject

Has Abstract

pub_date

2007-02-14 00:00:00

pages

297-304

issue

3

eissn

0167-5273

issn

1874-1754

pii

S0167-5273(06)00400-1

journal_volume

115

pub_type

杂志文章

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