• We sought to determine the anatomic characteristics of coronary arteries arising from an anomalous location (CAAL) detected on coronary computed tomography angiography (CTA) and assess the impact of high-risk anatomic characteristics on patient management and outcomes. (springer.com)
  • Opolski MP, Pregowski J, Kruk M et al (2013) Prevalence and characteristics of coronary anomalies originating from the opposite sinus of valsalva in 8,522 patients referred for coronary computed tomography angiography. (springer.com)
  • Coronary computed tomography angiography (CCTA) is a noninvasive method to image the coronary arteries. (medscape.com)
  • The intramitral type is also frequently part of the Shone complex, in which multiple levels of left heart obstruction are present, including aortic arch hypoplasia or coarctation, aortic valve stenosis, or subaortic stenosis. (medscape.com)
  • The LAD is really a different animal in terms of post-PCI FFR and, actually even pre-PCI FFR," and can have an FFR already in the region of 0.8 without stenosis to start with, "which is never the case in the right coronary artery," he said. (medscape.com)
  • Relationship between regional myocardial blood flow and thallium-201 distribution in the presence of coronary artery stenosis and dipyridamole-induced vasodilation. (jci.org)
  • This study assesses the relationship between the distribution of thallium-201 and myocardial blood flow during coronary vasodilation induced by intravenous dipyridamole in canine models of partial and complete coronary artery stenosis. (jci.org)
  • 64-slice multidetector CT (MDCT) coronary angiography has been shown to detect poststent complications such as instent stenosis, thrombosis, stent migration and stent fractures. (hindawi.com)
  • 64-detector-row MDCT coronary angiography has proved to be highly accurate in the detection of coronary artery stenosis [ 6 , 7 ], due to its high spatial and temporal resolution [ 1 ]. (hindawi.com)
  • Cardiac catheterization, using minimal contrast, revealed an 80% distal left main coronary stenosis (Fig. 1A) and a 90% proximal right coronary stenosis (Fig. 1B). (ispub.com)
  • Coronary arteriograms were quantified at a core laboratory & arterial territories with 蠅 70% stenosis were considered abnormal. (snmjournals.org)
  • Only three cases of coronary artery disease related to sorafenib therapy have been described in the literature, and all were due to arterial vasospasm without evidence of coronary artery stenosis on angiography. (biomedcentral.com)
  • Inset images show the percentage of stenosis, or narrowing, of the blocked arteries. (smartimagebase.com)
  • In critical stenosis of a coronary artery, ______% of a vessel is lumen is occluded, causing angina in the setting of increased functional demand. (brainscape.com)
  • 90% stenosis of a coronary artery is likely to cause _______ angina. (brainscape.com)
  • For scientists and clinicians who carry out research about the genesis of atherosclerosis, it has always been compelling to somehow quantify the grade of severity of coronary artery calcification and stenosis. (dovepress.com)
  • Since the late 1960s, the severity of coronary stenosis was suspected to be a prognostic factor for patients with coronary artery disease (CAD), 1 - 3 and this hypothesis was proven in several clinical studies with long follow-up periods. (dovepress.com)
  • In another study, 1 they used a more precise system by classifying the coronary vessels as non/slightly/moderately/severely/totally obstructed depending on the grade of obstruction in percental gradations from no to total stenosis, but they concentrated on the major arteries and branches. (dovepress.com)
  • Single left anterior descending artery with multiple prominent diagonal branches Superdominant good sized right coronary artery with absent left circumflex artery in the atrioventricular groovenoted There was no flow limiting significant stenosis in the visualized epicardial coronary arteries. (barnard.in)
  • Myocardial infarction with nonobstructive coronary arteries disease (MINOCA) is defi ned as a clinical syndro-me with normal or near normal coronary arteries disease (stenosis severity revealed on angiography less than 50%), exclu-ding other overt causes of myocardial ischemia such as cardiac trauma. (romanianjournalcardiology.ro)
  • We report the case of a 67-year-old male presenting with the clinical and enzymatic picture of a myocardial infarction with ST segment elevation in the anterior territory with no significant coronary arteries stenosis on the angiography. (romanianjournalcardiology.ro)
  • Coronary angiogram, performed after administration of aspirin (100 mg) and of a 300 mg loading dose of clopidogrel, showed a critical stenosis of the left anterior descending artery involving the origin of the first diagonal branch and a severe short stenosis of a large, dominant circumflex artery at the level of the first marginal branch. (hindawi.com)
  • Percutaneous coronary intervention (PCI) was then undertaken, which, due to the complex nature of the stenosis, required implantation of two drug-eluting stents (DESs) (Xience V, Abbot, Temecula, Calif, USA) on both bifurcations. (hindawi.com)
  • It helps form the posterior left ventricular branch or posterolateral artery. (wikipedia.org)
  • Additional autopsy findings included coronary artery disease, cardiomegaly (enlarged heart), and left ventricular hypertrophy (LVH). (cdc.gov)
  • All patients had angiographically normal epicardial coronary arteries, normal left ventricular function (contrast ventriculographic ejection fraction ⩾ 50%) and a normal coronary flow reserve. (bmj.com)
  • The reconstructed SPECT images were analyzed to calculate global MPS defect size and regional defect size for 3 coronary artery territories-left anterior descending, left circumflex, and right-as well as left ventricular (LV) volume and ejection fraction. (snmjournals.org)
  • SPECT with 99m Tc-labeled radiotracers has been widely used for the detection of abnormalities of myocardial perfusion and left ventricular (LV) function ( 1 - 9 ). (snmjournals.org)
  • Two other ventricular ganglionated plexuses were identified adjacent to the origins of the right and left marginal coronary arteries. (nih.gov)
  • Good opacification of the acute marginal branch was noted, with collaterals filling the posterior descending (PDA) and posterolateral ventricular (PLV) arteries. (hindawi.com)
  • 1B: LAO projection of the right coronary artery showing a 90% proximal lesion just prior to the origin of a right ventricular branch. (ispub.com)
  • A coronary fistula creates a left-to-right shunt eventually leading to ventricular overload and congestive heart failure. (alliedacademies.org)
  • Transthoracic echocardiography revealed moderate enlargement of the right ventricle and right atrium with preserved left ventricular function. (alliedacademies.org)
  • Global asynchrony of left ventricular (LV) contraction is most commonly assessed with Rb-82 gated PET by measuring phase bandwidth (BW). (snmjournals.org)
  • The cardiotoxic effects of sorafenib and sunitinib may cause hypertension, left ventricular ejection fraction (LVEF) dysfunction and/or congestive heart failure (CHF), and arterial thrombo-embolic events (ATE). (biomedcentral.com)
  • The manifesto also contains rules to diagnose acute MI in certain categories of patients, such as patients with left bundle branch block (LBBB), left ventricular paced rhythm, terminal QRS distortion, normal ST-elevation vs. left anterior descending artery (LAD) occlusion, anterior ventricular aneurysm vs. acute MI, ST depression in aVL. (iem-student.org)
  • Guideline-directed medical therapy (GDMT) and cardiac resynchronisation therapy (CRT) are the cornerstones of treatment, with a focus on the reversal of adverse left ventricular (LV) remodelling. (bmj.com)
  • Cardiomegaly (220 g) and symmetric left ventricular hypertrophy from the autopsy of a 6-year-old boy who suddenly collapsed while on a walk with his family. (medscape.com)
  • Taylor AJ, Rogan KM, Virmani R. Sudden cardiac death associated with isolated congenital coronary artery ano- malies. (scirp.org)
  • If the patient remains asymptomatic 2 years after percutaneous coronary intervention, stress radionuclide imaging, stress echocardiography, or stress cardiac magnetic resonance imaging may be appropriate. (acc.org)
  • Cardiac multi-slice CT scan showing the communication (white arrow) between a largely dilated circumflex artery and the right atrium via the coronary sinus. (alliedacademies.org)
  • Cardiac function was investigated, including coronary angiography and transthoracic and transesophageal echocardiography. (biomedcentral.com)
  • These studies documented normal cardiac function and normal morphology of the coronary arteries. (biomedcentral.com)
  • Subcategorizing aimed to predict completely occluded arteries and the need for immediate intervention, namely, emergent cardiac catheterization to open an occluded coronary artery in STEMI. (iem-student.org)
  • A meta-analysis of 46 trials with a total of 37 757 patients, including data from the International Study of Comparative Health Effectiveness with Medical and Invasive Approaches (ISCHEMIA) and Complete versus Culprit-Only Revascularization Strategies to Treat Multi-vessel Disease after Early PCI for STEMI (COMPLETE) trials demonstrated that PCI prevents death, cardiac death, and MI in patients with unstable coronary artery disease (CAD). (iem-student.org)
  • CONCLUSIONS: Compared to propofol, sevoflurane-anaesthetized pigs showed higher RV stroke work, cardiac output and right coronary artery blood flow during reperfusion. (lu.se)
  • Congenital, inflammatory, metabolic, or degenerative disease may involve coronary circulation, and increasingly complex cardiac surgical repairs demand enhanced understanding to improve operative outcomes. (medscape.com)
  • The Latin term corona, or crown, aptly describes coronary arteries that supply cardiac parenchyma with nutrient blood flow. (medscape.com)
  • Given the patient's history of recurrent sinusitis, asthma, eosinophilia, and coronary aneurysms, we diagnosed eosinophilic granulomatosis with polyangiitis ( Churg-Strauss syndrome , CSS) and cardiac involvement, and recommended high-dose corticosteroid treatment. (medscape.com)
  • Involvement of the heart usually occurs in the third phase as vasculitic lesions in myocardium and the coronary vessels, causing (peri)myocarditis, heart failure, cardiac tamponade , myocardial infarction , or pericardial effusion , as in our patient. (medscape.com)
  • Patients undergoing surgery were more likely to have obstructive coronary disease on CTA than patients managed conservatively (50 vs. 13 %, P = 0.01). (springer.com)
  • Conduct exercise stress tests into the fire department medical evaluation program for fire fighters at increased risk for coronary heart disease (CHD). (cdc.gov)
  • The death certificate and the autopsy completed by the County Medical Examiner listed coronary artery disease as the cause of death. (cdc.gov)
  • He had mild nonobstructive coronary artery disease in the left circumflex and left anterior descending arteries. (acc.org)
  • Recent data from the subgroup analysis of PRODIGY (Prolonging Dual-Antiplatelet Treatment After Grading Stent-Induced Intimal Hyperplasia Study) suggest benefits of prolonged DAPT in patients with peripheral arterial disease and coronary artery disease without increased risks of bleeding. (acc.org)
  • 2011 ACCF/AHA Focused Update of the Guideline for the Management of patients with peripheral artery disease (Updating the 2005 Guideline): a report of the American College of Cardiology Foundation/American Heart Association Task Force on practice guidelines. (acc.org)
  • The medical examiner's report listed the cause of death as atherosclerotic coronary artery disease. (cdc.gov)
  • The TARGET-FFR trial involved 260 patients with coronary artery disease, including stable angina and non-ST-segment myocardial infarction, who were randomly assigned after angiographically successful PCI to blinded post-PCI coronary physiology assessment or to a physiology-guided incremental optimization strategy (PIOS). (medscape.com)
  • 4-7 In the setting of coronary artery disease, several studies have shown the efficacy of magnesium infusion in patients with acute myocardial infarction, 4 vasospastic angina, 5 and unstable angina. (bmj.com)
  • Abdulla is 54-year-old diabetic man living in the United Arab Emirates with a history of three-vessel coronary artery disease. (acc.org)
  • Everolimus-eluting versus paclitaxel-eluting stents in coronary artery disease. (umassmed.edu)
  • The other coronary arteries revealed no significant atherosclerotic disease. (hindawi.com)
  • Data were retrospectively reviewed for 61 pts undergoing rest/regadenoson-stress Rb-82 gated PET for evaluation of potential coronary artery disease (CAD) who also had x-ray contrast coronary arteriography. (snmjournals.org)
  • Regional rest & stress phase maps should be generated routinely in the evaluation of patients for potential coronary artery disease, as abnormal regional phase indicates a high likelihood of CAD, particularly in LAD territories. (snmjournals.org)
  • Cardiotoxicity is commonly associated with the presence of cardiovascular risk factors, such as a history of hypertension or coronary artery disease. (biomedcentral.com)
  • Several authors have concluded that LVEF dysfunction and/or CHF is more frequent in patients with a history of hypertension or coronary artery disease. (biomedcentral.com)
  • Only three cases of coronary artery disease related to sorafenib treatment have been described in the literature. (biomedcentral.com)
  • In 2007, a 58-year-old white male with no history of tobacco use, hypertension, diabetes, or hypercholesterolemia, and no family history of coronary artery disease, was found to have a large solid right renal mass and associated tumor thrombus of the inferior vena cava and right atrium. (biomedcentral.com)
  • During December 2008, in a setting of stable disease, he underwent hepatic resection and enucleation of the left renal mass. (biomedcentral.com)
  • What is the main cause of coronary heart disease aka ischemic heart disease? (brainscape.com)
  • The study defined unstable CAD as post-MI patients who haven't received reperfusion therapy, multi-vessel disease following STEMI, non-ST-segment-elevation acute coronary syndrome. (iem-student.org)
  • Several scoring systems have tried to determine the severity of coronary artery disease (CAD) to investigate the connection between CAD severity and laboratory parameters. (dovepress.com)
  • Spontaneous coronary artery dissection (SCAD) is frequently reported as a disorder that primarily affects women without risk factors for cardiovascular disease. (biomedcentral.com)
  • Hence ,Recognition of this anomaly is important, as it may mimic atherosclerotic coronary artery disease, where oxygen demand in myocardium normally supplied by it is taken over by RCA and such supply may not be sufficient during increased physical activity. (barnard.in)
  • Usually the presence of the obstructive coronary artery disease is revealed in 95% of the cases with STEMI and NON-STEMI1. (romanianjournalcardiology.ro)
  • MI-NOCA syndrome is defi ned as the presence of the acute myocardial infarction without signifi cant coronary artery disease on the angiography. (romanianjournalcardiology.ro)
  • Even if the clinical parti-cularities of the MINOCA subjects differs comparing with the AMI group, the mortality rate at 1 month and 1 year are similar proving that the myocardial infarcti-on with nonobstructive coronary artery disease is not a benign condition and further tests should reveal the underlying etiology1. (romanianjournalcardiology.ro)
  • A 6-year-old girl was diagnosed with Kawasaki disease and bilateral giant coronary artery aneurysms at four months old and was subsequently referred to our hospital due to chest pain and T wave changes on electrocardiography. (bvsalud.org)
  • Coronary Artery Spasm and Coronary Microvascular Disease can also cause heart attack. (speedyremedies.com)
  • Dietary supplementation with tocotrienols has been shown to decrease the risk of coronary artery disease. (biomedcentral.com)
  • Knowledge of physiology, normal and variant anatomy, and anomalies of coronary circulation is an increasingly vital component in managing congenital and acquired pediatric heart disease. (medscape.com)
  • Variations in coronary anatomy are often recognized in association with structural forms of congenital heart disease. (medscape.com)
  • Which portion of the right coronary artery is susceptible to atherosclerotic build up? (brainscape.com)
  • His left anterior descending artery (LAD) was found to have a chronic total occlusion. (acc.org)
  • The patient undergoes coronary angiography and LAD shows chronic total occlusion with collaterals. (acc.org)
  • This case also highlights the role of CT coronary angiography (CTCA) in detecting stent fracture and associated coronary occlusion and perforation. (hindawi.com)
  • A 58-year-old man with mRCC developed acute coronary syndrome (ischemia/infarction) associated with critical sub-occlusion of the common trunk of the left coronary artery and some of its branches, which was documented on coronary angiography. (biomedcentral.com)
  • STEMI as a category can miss 30% of occlusion MI up to 50% in left circumflex, and NSTEMI was only associated with total MI in a quarter of cases. (iem-student.org)
  • The fundamental question is: Does the patient have an acute coronary occlusion that would benefit from immediate intervention? (iem-student.org)
  • The electrocardiogram (ECG) demonstrated the upsloping ST-segmental depression in precordial leads and positive symmetric T waves, indicating the de Winter syndrome, a condition associated with acute occlusion of the left anterior descending coronary artery (LAD) (Fig. 1 ) [ 10 ]. (biomedcentral.com)
  • Coronary angiography revealed complete proximal segment occlusion of the left circumflex artery (LCX). (bvsalud.org)
  • Coronary angiography showed a thrombotic occlusion of mid-portion of the dominant RCA. (your-doctor.net)
  • Myocardial damage is caused by vasculitis, leading to coronary occlusion due to the release of toxic mediators by activated eosinophils causing direct myocardial damage, or by replacement of the myocardium with granulomas and scar tissue. (medscape.com)
  • Schmitt R, Froehner S, Brunn J et al (2005) Congenital anomalies of the coronary arteries: imaging with contrast- enhanced, multidetector computed tomography. (springer.com)
  • The abnormal origin of the right coronary artery from the left aortic sinus coursing between the aorta and the pulmonary trunk is a rare congenital anomaly. (scirp.org)
  • Coronary artery fistulae are rare anatomic anomalies that may be congenital or acquired. (alliedacademies.org)
  • CAFs commonly result from congenital abnormalities but may be acquired via iatrogenic mechanisms, affecting approximately 0.002% of the general population and accounting for only 0.1% of coronary anomalies [ 1 ]. (alliedacademies.org)
  • The catheter-engaged left main coronary artery shows an 80% distal lesion prior to the bifurcation of the left anterior descending and circumflex coronary arteries. (ispub.com)
  • The drawings focus primarily on blockages in the following arteries: left anterior descending (LAD) artery, left main coronary artery, circumflex artery, and the right coronary artery. (smartimagebase.com)
  • The prevalence of CAAL was 1.14 % (114 of 9,974), with 36 (32 %) having anomalous right coronary artery from left coronary sinus, 71 (62 %) having anomalous left coronary artery from right coronary sinus and 7 (6 %) having a coronary artery arising outside coronary sinuses. (springer.com)
  • Lee HJ, Hong YJ, Kim HY et al (2011) Prevalence and anomalous origin of the right coronary artery from the left coronary sinus with an interarterial course: subtypes and clinical importance. (springer.com)
  • Uncommonly associated defects include atrial septal defect , cor triatriatum, left superior vena cava, unroofed coronary sinus, partial anomalous pulmonary venous drainage, pulmonary venous obstruction, double-orifice mitral valve, and Wolff-Parkinson-White syndrome . (medscape.com)
  • the diagnosis of left sinus Valsalva aneurysm, described by transtorasic echocardiography and transeusophageal echocardiography, might need demonstrated advanced scanning techniques. (scirp.org)
  • N. Söylemez, R. Demirbağ, T. Hazırolan and O. AkpınarP, "Anomalous Origin of the Right Coronary Artery from the Left Sinus Valsalva with Coronary Ectasia," International Journal of Clinical Medicine , Vol. 2 No. 3, 2011, pp. 269-271. (scirp.org)
  • The following case study discusses a symptomatic patient who was diagnosed with a fistula between the LCX and the right atrium, through the coronary sinus. (alliedacademies.org)
  • There appears to be a fistulous communication with the right atrium or coronary sinus. (alliedacademies.org)
  • Sagittal and coronal images confirmed the communication of the LCX with the right atrium via the coronary sinus ( Figures 2A and B ). (alliedacademies.org)
  • An intraoperative TEE showed a markedly dilated coronary sinus with brisk arterial flow ( Figure 3 ). (alliedacademies.org)
  • Intra-operative TEE showing a markedly dilated coronary sinus with brisk arterial flow at color Doppler. (alliedacademies.org)
  • The AV node lies at the lower back section of the interatrial septum near the opening of the coronary sinus, and conducts the normal electrical impulse from the atria to the ventricles. (wikipedia.org)
  • It is located at the center of Koch's triangle-a triangle enclosed by the septal leaflet of the tricuspid valve, the coronary sinus, and the membranous part of the interatrial septum. (wikipedia.org)
  • Electrical disconnection of the coronary sinus by radiofrequency catheter ablation to isolate a trigger of atrial fibrillation. (prelekara.sk)
  • Catheter ablation of atypical flutter and atrial tachycardia within the coronary sinus after left atrial ablation for atrial fibrillation. (prelekara.sk)
  • Impact of catheter ablation of the coronary sinus on paroxysmal or persistent atrial fibrillation. (prelekara.sk)
  • Focal atrial tachycardia originating from the musculature of the coronary sinus. (prelekara.sk)
  • Focal Arrhythmia confined within the coronary sinus and maintaining atrial fibrillation. (prelekara.sk)
  • The right coronary artery (RCA) most commonly arises separately from an ostium just below the sinotubular junction of the right (right anterior) sinus of Valsalva. (medscape.com)
  • The sinus node artery arises from the proximal RCA in approximately 50% of patients. (medscape.com)
  • The left coronary artery (LCA) arises from the mid position of the left (left anterior) sinus of Valsalva (sinuses on either side of the point of aortic and pulmonary commissural contact) just above the level of the free margin of the aortic valve leaflet and generally below the sinotubular junction. (medscape.com)
  • Atrial branches may arise from the Cx coronary artery and supply the sinus node in 40% of patients. (medscape.com)
  • The artery supplying the sinus node branches from the right coronary artery in 55-60% of hearts or the left circumflex artery in 40-45% of hearts. (medscape.com)
  • The posterior internodal tract starts at the posterior margin of the sinus node and travels posteriorly around the SVC and along the crista terminalis to the eustachian ridge and then into the interatrial septum above the coronary sinus, where it joins the posterior portion of the AV node. (medscape.com)
  • The compact portion of the atrioventricular (AV) node is a superficial structure located just beneath the RA endocardium, anterior to the ostium of the coronary sinus, and directly above the insertion of the septal leaflet of the tricuspid valve. (medscape.com)
  • As basis for their quantification, they measured the remaining lumina in the right coronary artery, main left coronary artery and its anterior descending and circumflex branches. (dovepress.com)
  • Spontaneous coronary artery dissection (SCAD) is a very rare cause of acute coronary syndromes in young otherwise healthy patients with a striking predilection for the female gender. (uncg.edu)
  • Загальні відомості про гострі коронарні синдроми (ГКС) Acute coronary syndromes result from acute obstruction of a coronary artery. (msdmanuals.com)
  • Серцеві маркери Acute coronary syndromes result from acute obstruction of a coronary artery. (msdmanuals.com)
  • Proximal left circumflex vessels exposed to ischaemia and reperfusion showed enhanced sensitivity to the relaxant effects of SIN-1 compared to control proximal vessels obtained from the same hearts. (eurekamag.com)
  • Coronary arteries (most often 2) are normally the only vessels arising immediately above the free margin of aortic valve from the ascending aorta. (medscape.com)
  • It supplies the posterolateral portion of the left ventricle. (wikipedia.org)
  • The circumflex artery supplies the posterolateral left ventricle and the anterolateral papillary muscle. (wikipedia.org)
  • It supplies 15-25% of the left ventricle in right-dominant systems. (wikipedia.org)
  • If the coronary anatomy is left-dominant, the circumflex artery supplies 40-50% of the left ventricle. (wikipedia.org)
  • Although a supravalvar mitral ring may allow for normal hemodynamic flow from the left atrium to the left ventricle (LV), it often substantially obstructs mitral valve inflow. (medscape.com)
  • Lesions such as transposition of the great arteries, AV discordance, and double outlet right ventricle are occasionally complicated by a supravalvar left AV valvular ring. (medscape.com)
  • 5 min later, the animals were sacrificed, the left ventricle was sectioned into 1-2-g samples, and thallium-201 activity and regional myocardial blood flow were measured. (jci.org)
  • The right coronary artery has originated the marginal branches to the right ventricle and the right circumflex branch, which has branched out in the subsinuous interventricular branch. (usp.br)
  • In this condition, lateral wall of the left ventricle is supplied by a super-dominant right coronary artery or occasionally by a multiple diagonal branches of LAD Pts present with exertional chest pain. (barnard.in)
  • After admission, stress myocardial perfusion imaging showed reversible ischemia in multiple areas of the left ventricle. (bvsalud.org)
  • Diagonal branches arise from the LAD and course at downward angles to supply the anterolateral free wall of the left ventricle. (medscape.com)
  • Obtuse marginal branches arise from the Cx system to supply the posterolateral aspect of the left ventricle. (medscape.com)
  • In a minority of individuals, the left circumflex artery gives rise to the posterior interventricular artery, in which cases such a heart is deemed left dominant. (wikipedia.org)
  • The left circumflex artery follows the left part of the coronary sulcus, running first to the left and then to the right, reaching nearly as far as the posterior longitudinal sulcus. (wikipedia.org)
  • The circumflex artery curves to the left around the heart within the coronary sulcus, giving rise to one or more left marginal arteries (also called obtuse marginal branches) as it curves toward the posterior surface of the heart. (wikipedia.org)
  • The circumflex artery ends at the point where it joins to form to the posterior interventricular artery in 15% of all cases, which lies in the posterior interventricular sulcus. (wikipedia.org)
  • In the other 85% of all cases the posterior interventricular artery comes out of the right coronary artery. (wikipedia.org)
  • When the left circumflex supplies the posterior descending artery in those 15% of cases, it is known as a left dominant circulation. (wikipedia.org)
  • Collateral circulation through posterior descending artery (PDA) was also demonstrated on CT coronary angiography. (hindawi.com)
  • The artery that perfuses the posterior 1/3rd of the septum can come from either the right coronary artery of the left circumflex branch. (brainscape.com)
  • In 90% of patients, the RCA supplies the posterior descending coronary artery branch at the crux of the heart, which supplies the atrioventricular (AV) node and the posterior aspect of the interventricular septum. (medscape.com)
  • Should the Cx coronary reach the crux of the heart and supply the posterior descending coronary artery, the left coronary system would be termed dominant. (medscape.com)
  • MAIN OUTCOME MEASURES Diameter of the proximal and distal segments of the epicardial coronary arteries and coronary blood flow. (bmj.com)
  • Objective: The effect of the nitric oxide donor, SIN-1, in proximal and distal coronary arteries with normal endothelium was characterised before and after inhibition of NO synthesis with L-nitroarginine methyl ester (L-NAME). (eurekamag.com)
  • In control dogs (group 1) acetylcholine caused relaxation in proximal and distal coronary arteries (p gt 0.05). (eurekamag.com)
  • Conclusions: Endothelium dependent vasodilatation is attenuated by ischaemia and reperfusion in both proximal and distal coronary arteries of the size studied. (eurekamag.com)
  • We report the successful treatment of a large fistulous communication between the circumflex artery and the right atrium by proximal and distal ligation of the circumflex artery and selective revascularization of the excluded marginal branch. (alliedacademies.org)
  • There have been multiple anomalies described, for example the left circumflex having an aberrant course from the right coronary artery. (wikipedia.org)
  • Anomalies of the coronary arteries. (scirp.org)
  • Coronary artery anomalies: Assessment with free-breathing three-dimensional coronary MR angiography. (scirp.org)
  • Importantly, coronary artery anomalies are a cause of sudden death in young athletes in the absence of additional heart abnormalities. (medscape.com)
  • The circumflex branch of left coronary artery (also known as the left circumflex artery, or circumflex artery[citation needed]) is a branch of the left coronary artery. (wikipedia.org)
  • Inter = intermedius branch of the left coronary artery. (medscape.com)
  • OBJECTIVE To determine how magnesium affects human coronary arteries and whether endothelium derived nitric oxide (EDNO) is involved in the coronary arterial response to magnesium. (bmj.com)
  • Furthermore, the coronary arterial response to magnesium is dose dependent and independent of EDNO. (bmj.com)
  • Methods: In vitro reactivity of preconstricted coronary arterial rings was studied in control dogs (group 1), and dogs in which the left circumflex coronary artery was subjected in vivo to four acute occlusions of 5 min duration, with three intervening reperfusion periods of 5 min and a final reperfusion period of 60 min (group 2). (eurekamag.com)
  • Coronary stent fracture is a known complication of coronary arterial stent placements. (hindawi.com)
  • The review is illustrated with two SCAD patients who had a recurrence of a spontaneous dissection in another artery within a few days after the initial event. (uncg.edu)
  • Spontaneous coronary artery dissection associated with sexual intercourse. (umassmed.edu)
  • There are some mechanisms that might be involved in the appearance of the MINOCA syndrome inclu-ding the atheromatous plaque erosion, embolism or epicardial coronary artery dissection. (romanianjournalcardiology.ro)
  • Therefore, we aimed to identify the origin and distribution of the right and left coronary arteries of boars, emphasizing the configuration and macroscopic representativity of their branches while characterizing a possible dominance concerning the type of circulation and the potential use of this animal as an experimental model, hence boars are the ancestors of the domestic pigs. (usp.br)
  • Anastomoses have stood out among the paraconal and subsinuous interventricular branches - where a right dominant coronary artery occurred - and between the right and left circumflex branches. (usp.br)
  • The number of coronary vascular territory refers to any of the 3 major arteries (Left Anterior Descending, Circumflex or Right Coronary Artery) or their branches. (health.gov.au)
  • The left coronary ostium is usually single, giving rise to a short, common LCA trunk that branches into the left anterior descending (LAD) and circumflex (Cx) coronary arteries. (medscape.com)
  • In an estimated 70% of patients, a coronary branch (termed ramus medianus, intermedius, or intermediate branch) arises early off the left coronary system to supply an area between diagonal branches from the LAD and obtuse branches from the Cx systems. (medscape.com)
  • While angiography first showed the giant aneurysm of the left circumflex coronary artery. (nih.gov)
  • Left heart catheterization revealed areas of aneurysmal dilation of coronary arteries, with a giant proximal left circumflex aneurysm measuring 1 cm, involving the first obtuse marginal origin with severe ectasia (Figure), and an aneurysmal segment in the proximal first diagonal branch. (medscape.com)
  • Coronary angiography showing a giant proximal left circumflex aneurysm measuring 1 cm, involving the first obtuse marginal origin. (medscape.com)
  • The left circumflex coronary artery aneurysm was attributed to this diagnosis. (medscape.com)
  • Haemodynamic parameters and blood flow in the 3 major coronary arteries were continuously monitored. (lu.se)
  • This is caused by blockage in coronary artery, particularly any of the three major coronary arteries (LAD, Circ, or RCA). (speedyremedies.com)
  • We report a case of clopidogrel-induced bone marrow toxicity manifesting with severe neutropenia in a patient treated with multiple coronary stents and provide suggestions for an alternative treatment. (hindawi.com)
  • PATIENTS 17 patients with angiographically normal coronary arteries. (bmj.com)
  • Lesion reference to AHA types V and VI was discarded, because it failed to account for the 3 different morphologies (rupture, erosion, and calcified nodule) that give rise to acute coronary thrombosis. (medscape.com)
  • Our objective in this study was to determine the extent to which tocotrienols inhibit platelet aggregation and reduce coronary thrombosis, a major risk factor for stroke in humans. (biomedcentral.com)
  • a mixture of α- + γ- + δ-tocotrienols) on in vivo platelet thrombosis and ex vivo platelet aggregation (PA) after intravenous injection in anesthetized dogs, by using a mechanically stenosed circumflex coronary artery model (Folts' cyclic flow model). (biomedcentral.com)
  • Explain what is meant by "right dominant" with regards to coronary arteries. (brainscape.com)
  • In right-dominant individuals the blood supply is from the right coronary artery while in left dominant individuals it originates from the left circumflex artery. (wikipedia.org)
  • Coronary angiogram showing a dilated left circumflex (Cx) artery with first obtuse marginal branch (OM1). (alliedacademies.org)
  • For isolated Left Main (no involvement of the bifurcation), a single territory should be claimed but if the treated segment involves the bifurcation then 2 territories should be claimed. (health.gov.au)
  • The name and nature of a coronary artery or branch is defined by that vessel's distal vascularization pattern or territory, rather than by its origin. (medscape.com)
  • These data provide basic validation that supports the use of intravenous dipyridamole and thallium-201 as an alternative to exercise stress and thallium-201 for evaluating the effects of coronary occlusive lesions on the distribution of regional myocardial blood flow. (jci.org)
  • 40%) lesions in the left system. (ispub.com)
  • These models, however, don't medical development, diastolic dysfunction could result in di- progress to more advanced renal illness seen in people astolic heart failure, which is finest described because the presence which is characterised by a lack of glomerular п¬Ѓltration, of scientific indicators and symptoms of coronary heart failure within the pres- overt proteinuria, and superior structural lesions (22, sixty one). (ehd.org)
  • The initial conservative management and PCI with multiple stent implantations were successfully implemented to achieve optimal results of revascularization in coronary arteries. (biomedcentral.com)
  • Optimization of fractional flow reserve (FFR) after angiographically successful percutaneous coronary intervention (PCI) did not impact clinical outcomes but significantly reduced the proportion of patients leaving the cath lab with an FFR of 0.80 or less in a single-center randomized trial. (medscape.com)
  • For patients with abnormal MPS results, at a 50% reduction there was a significant difference in global defect size but not in regional defect size in the left anterior descending, left circumflex, and right coronary artery territories, whereas at a 75% reduction the difference was statistically significant in all territories, including the difference in global defect size. (snmjournals.org)
  • Although this imaging modality is well recognized to provide invaluable diagnostic information about coronary artery diseases, radiation exposure to patients has become a growing concern ( 13 ). (snmjournals.org)
  • Dual antiplatelet therapy with aspirin plus thienopyridines has become the standard treatment of patients undergoing coronary stenting. (hindawi.com)
  • The Cx coronary artery courses along the left AV groove, around the obtuse margin, and posteriorly toward the crux of the heart. (medscape.com)
  • Shi H, Aschoff AJ, Brambs HJ, Hoffmann MH (2004) Multislice CT imaging of anomalous coronary arteries. (springer.com)
  • Xu H, Zhu Y, Zhu X, Tang L, Xu Y (2012) Anomalous coronary arteries: depiction at dual-source computed tomographic coronary angiography. (springer.com)
  • Rapid identification of the course of anomalous coronary arteries in adults: The 'dot and eye' method. (scirp.org)
  • Bhattad PB, Jha A, Pacifico L, Ramsaran E. Anomalous Interarterial Right Coronary Artery: Approach to a High-Risk Course. (umassmed.edu)
  • Bhattad PB, Ramsaran E. Anomalous Origin of the Left Circumflex Coronary Artery: Approach in Acute Coronary Syndrome. (umassmed.edu)
  • 10 dogs were chronically instrumented with catheters in the left atrium and aorta and with a balloon occluder and electromagnetic flow probe on the proximal left circumflex coronary artery. (jci.org)
  • The most commonly affected vessel is the right coronary artery while origination from the left circumflex is rare. (alliedacademies.org)
  • A coronary artery fistula (CAF) is an aberrant connection between a coronary artery and heart chamber or major thoracic vessel that bypasses capillary beds and results in a left-to-right shunt. (alliedacademies.org)
  • The vessel at right represents the left circumflex artery, which contains widespread levels of coronary plaque (green). (nih.gov)
  • It winds around the left side of the heart along the atrioventricular groove (coronary sulcus). (wikipedia.org)
  • Complete absence results from agenesis of LCX in the left atrioventricular groove. (barnard.in)
  • The heart of a domestic swine is similar to that of a human regarding anatomy, blood perfusion, and distribution of nurturing arteries. (usp.br)
  • The patient was closely monitored to assure no blood pressure change with each dose since hypotension would cause devastating changes in the coronary perfusion pressures. (ispub.com)
  • In group 2 the response to acetylcholine was significantly (p lt 0.05) attenuated in left circumflex coronary arteries exposed to ischaemia and reperfusion compared with left anterior descending control rings from the same heart. (eurekamag.com)
  • At reperfusion, left atrial pressure and systemic vascular resistance decreased with sevoflurane. (lu.se)
  • INTERVENTIONS Magnesium sulfate (MgSO 4 ) (0.02 mmol/min and 0.2 mmol/min) was infused for two minutes into the left coronary ostium before and after intracoronary infusion of L-NMMA. (bmj.com)
  • In this report, we presented a rare case of pregnancy-associated SCAD in a young woman that occurred in multiple coronary arteries within a short period. (biomedcentral.com)
  • This is associated with the dominance of the coronary artery circulation. (wikipedia.org)