近期急性心肌梗死患者经皮冠状动脉介入治疗后运动诱发的ST段抬高
Exercise-induced ST-segment elevation in patients with a recent acute myocardial infarction treated by primary percutaneous coronary intervention.
作者信息
Infusino Fabio, Lanza Gaetano A, Larosa Claudio, Sgueglia Gregory A, Marinaccio Leonardo, Lamendola Priscilla, Mariani Luca, Santangeli Pasquale, Sestito Alfonso, Crea Filippo
机构信息
Istituto di Cardiologia, Università Cattolica del Sacro Cuore, Rome, Italy.
出版信息
Ann Noninvasive Electrocardiol. 2007 Oct;12(4):349-53. doi: 10.1111/j.1542-474X.2007.00184.x.
OBJECTIVES
To get insight in the mechanism of exercise-induced ST-segment elevation (STE) in patients with Q/QS waves at the electrocardiogram (ECG).
METHODS
We performed exercise stress test in 13 patients with anterior acute myocardial infarction treated by successful primary percutaneous coronary intervention (PCI).
RESULTS
Compared to rest, an additional STE > or = 1 mm in one or more precordial ECG leads during exercise occurred in nine patients (69%), in the absence of symptoms.
CONCLUSIONS
In acute myocardial infarction (MI) patients, treated by primary PCI and showing optimal coronary blood flow restoration at angiography, STE can still be induced by exercise in Q/QS wave ECG leads. This finding lends further support to the theory that exercise-induced STE in this clinical context is unlikely to represent by itself transient myocardial ischemia or viability.
目的
深入了解心电图（ECG）出现Q/QS波的患者运动诱发ST段抬高（STE）的机制。
方法
我们对13例经成功的直接经皮冠状动脉介入治疗（PCI）的前壁急性心肌梗死患者进行了运动负荷试验。
结果
与静息状态相比，9例患者（69%）在运动期间一个或多个胸前导联心电图出现额外的STE≥1mm，且无症状。
结论
在接受直接PCI治疗且血管造影显示冠状动脉血流恢复良好的急性心肌梗死（MI）患者中，运动仍可诱发Q/QS波心电图导联出现STE。这一发现进一步支持了这样的理论，即在这种临床情况下，运动诱发的STE本身不太可能代表短暂性心肌缺血或存活心肌。
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