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coronary artery anomalies： the left main coronary artery or left anterior descending coronary artery originating from the proximal of right coronary artery

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Chinese Medical Journal 2014年第12期127卷 2392-2394页

作者： Xiong Weiguo He Dongyong Lu Chunpeng Qin Xuguang Li Hongliang Xu Xinhua Shang Lihua Department of Cardiology First Affiliated Hospital of Tsinghua UniversityBeijing 100016China Emergency Internal Medicine Affiliated Hospital of Qingdao UniversityQingdaoShandong 266003China

coronary artery anomalies （CAAs） are present at birth, but are usually asymptomatic and are found during coronary angiography or multi-slice computed tomography （MSCT） examinations. Their prevalence is less than 1.3% based published series.1＇2 The most common coronary anomaly is separate origin of the left anterior descending coronary artery （LAD） and left circumflex coronary artery （LCX） from the left sinus of the Valsalva. The second most common anomaly is the origin of the LCX artery from the right coronary artery （RCA） or right sinus of the Valsalva. We present two cases of coronary artery anomalies： one is the left main coronary artery （LMCA） arising from the proximal RCA, the other is the LAD originating from the proximal RCA.

关键词： coronary artery anomaly left main coronary artery left anterior descending coronary artery coronary angiography computed tomography

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Can transthoracic Doppler echocardiography be used to detect coronary slow flow phenomenon？

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Chinese Medical Journal 2010年第24期123卷 3529-3533页

作者： NIE Shao-ping GENG Li-li WANG Xiao ZHANG Xiao-shan YANG Ya LIU Bai-qiu LI Jun QIAO Yan LIU Xin-min LUO Tai-yang DONG Jian-zeng LIU Xiao-hui MA Chang-sheng Department of Cardiology Beijing Anzhen Hospital Capital Medical University Beijing 100029 China Department of Ultrasonography Beijing Anzhen Hospital Capital Medical University Beijing 100029 China

Background coronary slow flow phenomenon （CSFP） is an important, angiographic clinical entity but is lacking non-invasive detecting techniques. This study aimed to elucidate the value of transthoracic Doppler echocardiography （TTDE） in the diagnosis and monitoring of coronary slow flow in left anterior descending （LAD） coronary *** We consecutively enrolled 27 patients with CSFP in LAD detected by coronary arteriography from August 2009 to April 2010. Thirty-eight patients with angiographically normal coronary flow served as control. Corrected thrombolysis in myocardial infarction （TIMI） frame count （CTFC） was used to document coronary flow velocities. All subjects underwent TTDE within 24 hours after coronary angiography. LAD flow was detected and the coronary diastolic peak velocities （DPV） and diastolic mean velocities （DMV） were *** Sixty of 65 （92.3%） subjects successfully underwent TTDE. Baseline clinical characteristics were similar between the two groups. coronary DPV and DMV of LAD were significantly lower in the CSFP group than in the control group （（0.228±0.029） m/s vs. （0.302±0.065） m/s, P=0.000; （0.176±0.028） m/s vs. （0.226±0.052） m/s, P=0.000,respectively）. There was a high inverse correlation between CTFC and coronary DPV and DMV （r=-0.727, P=0.000;r=-0.671, P=0.000, respectively）. Receiver operating characteristic （ROC） curve showed that the area under the curve （AUC） was less than one half for coronary DPV （AUC=0.104） and DMV （AUC=0.204）, *** In patients with CSFP, there is a high inverse correlation between CTFC and coronary diastolic flow velocities in the LAD coronary artery, as measured by TTDE. The value of TTDE in the monitoring and evaluation of coronary flow in patients with CSFP deserves further investigation.

关键词： coronary slow flow phenomenon transthoracic Doppler echocardiography left anterior descending coronary artery flow velocity

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