心肌橋的臨床特征及其影像學(xué)指標(biāo)與心肌缺血癥狀的相關(guān)性
本文選題:心肌橋 + 壁冠狀動(dòng)脈; 參考:《中國(guó)動(dòng)脈硬化雜志》2017年01期
【摘要】:目的用冠狀動(dòng)脈CT血管成像(CTA)和冠狀動(dòng)脈造影(CAG)檢查心肌橋-壁冠狀動(dòng)脈(MB-MCA),探討MB-MCA的臨床特征及其影像學(xué)指標(biāo)與心肌缺血癥狀的相關(guān)性。方法回顧分析我院近年來(lái)的MB病例,入選既經(jīng)冠狀動(dòng)脈CTA又經(jīng)CAG診斷的MB病例152例。按照有無(wú)動(dòng)脈粥樣硬化(As)分為單純MB組、As并MB組;根據(jù)有無(wú)心肌缺血癥狀分為有癥狀組、無(wú)癥狀組。分析并比較各組臨床特征及影像學(xué)資料。分析MB-MCA影像學(xué)指標(biāo)與心肌缺血癥狀的相關(guān)性。結(jié)果冠狀動(dòng)脈CTA對(duì)MB的檢出率為11.4%,CAG對(duì)MB的檢出率為10.1%,兩者相近。152例MB-MCA特點(diǎn):收縮期壓縮程度為50.1%±10.5%,舒張期壓縮程度為22.8%±10.5%;平均長(zhǎng)度為18.2±11.5 mm,厚度為2.7±0.8 mm;最常見(jiàn)MB發(fā)生部位為左前降支(LAD)中段(60.7%)。As并MB組心肌缺血癥狀(典型胸悶等)發(fā)生率、活動(dòng)平板運(yùn)動(dòng)試驗(yàn)陽(yáng)性率明顯高于單純MB組(75.5%比58.7%,66.0%比43.5%,P0.001)。有癥狀組比無(wú)癥狀組MB更多分布于LAD中段(86.9%比68.9%,P0.001),更易合并As發(fā)生(74.8%比57.8%,P0.001)。Spearman相關(guān)分析顯示,MB厚度、MCA收縮期及舒張期壓縮程度與心肌缺血癥狀呈顯著正相關(guān)。結(jié)論冠狀動(dòng)脈CTA與CAG對(duì)MB的檢出率相似。MB合并As患者的心肌缺血癥狀發(fā)生率、活動(dòng)平板運(yùn)動(dòng)試驗(yàn)陽(yáng)性率均高于單純MB患者。MB患者心肌缺血癥狀與MB厚度、MCA壓縮程度及As密切相關(guān)。
[Abstract]:Objective to investigate the clinical features of MB-MCA and its correlation with myocardial ischemic symptoms by detecting MB-MCAG of myocardial bridge-wall coronary artery with coronary CT angiography (CT) and coronary angiography (CAG). Methods the MB cases in our hospital in recent years were retrospectively analyzed. 152 MB cases diagnosed by coronary artery CTA and CAG were selected. According to whether there was atherosclerosis or not, the rats were divided into MB group and MB group, and were divided into symptomatic group and asymptomatic group according to the symptoms of myocardial ischemia. The clinical features and imaging data of each group were analyzed and compared. To analyze the correlation between MB-MCA imaging parameters and myocardial ischemic symptoms. Results the detection rate of MB in coronary artery was 11.4%. The detection rate of MB in coronary artery was 10.1. The characteristics of MB-MCA were similar: the degree of systolic compression was 50.1% 鹵10.5mm, the degree of diastolic compression was 22.8% 鹵10.5mm, the average length was 18.2 鹵11.5 mm, the thickness was 2.7 鹵0.8 mm, and the most common part of MB was found. The incidence of myocardial ischemia symptoms (typical chest tightness, etc.) in the MB group was 60.7% in the middle segment of left anterior descending branch (LAD). The positive rate of treadmill exercise test was significantly higher than that of MB group (75.5% vs 58.7%, 66.0% vs 43.5%, P 0.001). MB in symptomatic group was more distributed in middle segment of LAD than that in asymptomatic group (86.9% vs 68.9%, P 0.001), and it was more likely to be associated with as (74.8% vs 57.8%). Spearman correlation analysis showed that the thickness of MB and the degree of systolic and diastolic compression of MCA were positively correlated with myocardial ischemia symptoms. Conclusion the detection rate of MB in coronary CTA and CAG is similar. The incidence of myocardial ischemia symptoms in patients with MB and as is similar. The positive rate of treadmill exercise test was significantly higher than that of MB patients. The myocardial ischemic symptoms were correlated with the degree of MCA compression and as.
【作者單位】: 武漢大學(xué)中南醫(yī)院心內(nèi)科;武漢大學(xué)中南醫(yī)院放射科;
【基金】:湖北省自然科學(xué)基金(2013CFB246)
【分類號(hào)】:R541
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