Coronary artery recanalization and collateral circulation in patients with myocardial infarction
Shen, W.F.; Gong, L.S.; Zhang, J.S.
Zhonghua Xin Xue Guan Bing Za Zhi 16(3): 137-9 188-9
1988
ISSN/ISBN: 0253-3758 PMID: 3219999 Document Number: 308128
To determine the effects of obstructed artery recanalization and collateral circulation on myocardial infarct size and left ventricular (LV) function, 44 patients with a first transmural myocardial infarction underwent left ventriculography and coronary arteriography. The QRS score was used as a measure of infarct size. Patients with patent artery (Group I; 18 cases) and those with totally obstructed artery and collateral vessels (Group II; 13 cases) had lower QRS score and les severe abnormal wall motion and higher LV ejection fraction than patients with totally occluded artery and without collateral vessels (Group III; 13 cases). The study indicates that the residual blood flow by way of either coronary artery recanalization or coronary collateral circulation may play an important role in the reduction of myocardial infarct size and preservation of LV function in patients with myocardial infarction.