scholarly journals Left ventricular inflow obstruction due to a coronary arteriovenous fistula: a paediatric case report

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Ayako Chida-Nagai ◽  
Hirokuni Yamazawa ◽  
Takao Tsujioka ◽  
Kota Taniguchi ◽  
Osamu Sasaki ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Arteriovenous Fistula ◽  
Volume Overload ◽  
Proximal Part ◽  
Ventricular Volume ◽  
Left Ventricular ◽  
Circumflex Coronary Artery ◽  
Left Circumflex Coronary Artery ◽  
Coronary Arteriovenous Fistula ◽  
Medial Side

Abstract Background We report a rare case of left ventricular inflow obstruction from a branch of the left circumflex coronary artery to the right atrium caused by a coronary arteriovenous fistula (CAVF) in a young Japanese male child. Case presentation The patient was diagnosed with CAVF following a heart murmur shortly after birth. The left-to-right shunt caused right ventricular volume overload and pulmonary congestion. An emergency surgical intervention was performed for the CAVF on day 6 after birth. However, by 5 years of age, his left ventricular inflow obstruction worsened. We found an abnormal blood vessel originating from the proximal part of a branch of the left circumflex coronary artery, circling the outside of the mitral valve annulus along the medial side of the coronary sinus. As the child gets older, the blood inflow into the left ventricle might get restricted further, resulting in left-sided heart failure. Conclusion Our findings suggest that even after CAVF closure surgery, it is essential to monitor for complications caused by progressive dilatation of a persistent CAVF.

scholarly journals Giant Calcified Left Circumflex Coronary Artery Aneurysm With Complex Coronary-to–Left Ventricular Communication

2020 ◽  
Vol 2 (11) ◽  
pp. 1812-1817
Author(s):  
Rabih Touma ◽  
Mohan Palla ◽  
Khurshaid Alam ◽  
James F. Mastromatteo ◽  
Aiden Abidov
Keyword(s):  
Coronary Artery ◽  
Coronary Artery Aneurysm ◽  
Artery Aneurysm ◽  
Left Ventricular ◽  
Circumflex Coronary Artery ◽  
Left Circumflex Coronary Artery

Increased myocardial infarct size because of reduced coronary collateral blood flow in beagles

1989 ◽  
Vol 257 (6) ◽  
pp. H1798-H1803 ◽  
Author(s):  
N. Uemura ◽  
D. R. Knight ◽  
Y. T. Shen ◽  
J. Nejima ◽  
M. V. Cohen ◽  
...  
Keyword(s):  
Blood Flow ◽  
Coronary Artery ◽  
Myocardial Blood Flow ◽  
Infarct Size ◽  
Myocardial Infarct ◽  
Left Ventricular ◽  
Myocardial Infarct Size ◽  
Circumflex Coronary Artery ◽  
Area At Risk ◽  
Left Circumflex Coronary Artery

Effects of permanent left circumflex coronary artery occlusion (CAO) were examined in conscious purebred beagles and mongrel dogs, instrumented with miniature left ventricular (LV) pressure gauges, wall thickness gauges in the ischemic zone, catheters in left atrium and aorta, and snares around the left circumflex coronary artery. Blood flow was measured using the radioactive microsphere technique before CAO and at 5 min, 1, 3, and 24 h after CAO. Although CAO reduced myocardial blood flow similarly in beagles and mongrels, significantly less (P less than 0.05) recovery of myocardial blood flow was observed over the following 24-h period in beagles. Infarct size, as determined by triphenyltetrazolium chloride and expressed as percentage of area at risk, was larger (P less than 0.05) in beagles (62.0 +/- 5.1%) than mongrels (42.5 +/- 4.2%). Thus beagles do not tolerate ischemia as well as mongrel dogs and possess fewer functional coronary collaterals resulting in larger infarcts after CAO.

Assessment of a left circumflex coronary artery–left ventricle fistula by multimodality imaging in a child

2016 ◽  
Vol 27 (3) ◽  
pp. 570-572
Author(s):  
Jing Chen ◽  
Zhi-Gang Yang
Keyword(s):  
Coronary Artery ◽  
Left Ventricle ◽  
Multimodality Imaging ◽  
Myocardial Strain ◽  
Left Ventricular ◽  
Early Surgery ◽  
Circumflex Coronary Artery ◽  
Left Circumflex Coronary Artery ◽  
Tissue Tracking

AbstractMultimodality imaging revealed a left circumflex coronary artery–left ventricle fistula in a 4-year-old boy. MRI tissue tracking revealed a slight abnormality in the left ventricular myocardial strain. Early surgery was suggested to avoid serious complications.

scholarly journals Phasic Compression of Left Circumflex Coronary Artery during Atrial Systole

2017 ◽  
Vol 44 (2) ◽  
pp. 131-134 ◽  
Author(s):  
Edward Samuel Roberto ◽  
Ajay Agarwal
Keyword(s):  
Coronary Artery ◽  
Careful Analysis ◽  
Cardiac Risk ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Circumflex Coronary Artery ◽  
Exertional Dyspnea ◽  
Ventricular Ejection Fraction ◽  
Left Circumflex Coronary Artery ◽  
Atrial Systole

Phasic coronary artery compression is typically associated with spasm or myocardial bridging. Compression caused by acquired anatomic changes to the surrounding heart chambers has been reported only infrequently. We present a possibly unique case of phasic compression of the proximal left circumflex coronary artery during atrial contraction in association with a dilated left atrium. A 55-year-old man with multiple cardiac risk factors presented with worsening exertional dyspnea. An electrocardiogram and echocardiogram revealed marked left atrial dilation and a left ventricular ejection fraction of 0.15 to 0.20 with elevated filling pressures. Angiograms showed compression of the proximal segment of the left circumflex coronary artery during late ventricular diastole: the compression occurred in phase with atrial systole, whereas good flow without compression was present during atrial diastole. We attributed this phenomenon to ballooning of the lateral region of the atrial wall toward the atrioventricular groove during atrial systole. The patient complied with antihypertensive therapy, and his status improved after one year. To identify coronary artery compression in the presence of abnormal chamber geometry and to guide the treatment of the contributing medical conditions, we recommend careful analysis of angiographic results.

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