Clinical characteristics of inferior acute myocardial infarction induced by different culprit vessels
DAI Zheng-xue
ZHANG Min
LI Jin-ming
YAN Peng-fei
FENG Da-yue
FANG Lian-qing
WANG Jian-guo
LI Jun-xia
Abstract：Objective To analyze the clinical characteristics of inferior acute myocardial infarction (AMI) induced by different culprit vessels. Methods The patients (n=268) with inferior AMI attacked within 12 h were chosen and given emergency coronary angiography (CAG), and divided, according to different culprit vessels, into RCA group (with RCA occlusion, n=216) and LCX group (with LCX occlusion, n=52). The clinical characteristics and electrocardiogram (ECG) indexes were compared between 2 groups. Results The patients with right ventricular myocardial infarction, cardiac shock and heart failure were significantly more in RCA group than those in LCX group (P<0.05). LVEF was significantly lower in RCA group than that in LCX group (51±8%vs. 58±10%, P<0.05). The difference in in-hospital mortality had no statistical significance between 2 groups (P>0.05). The indexes of STⅢelevation/STⅡelevation≥1, STV4R elevation≥1 mm, AVB and VT/VF were all significantly higher in RCA group than those in LCX group (P<0.01). Conclusion Inferior AMI induced by RCA occlusion or LCX occlusion has different clinical characteristics and ECG expressions. The ST-segment changes of ECGⅡlead,Ⅲlead and V4R lead can predict culprit vessels in patients with inferior AMI, which has guide effect on clinical treatment and prognosis.
Keywords：Inferior acute myocardial infarctionCulprit vessels
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 307-308,312 )