AnatomyOrganismsDiseasesChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPhenomena and ProcessesDisciplines and OccupationsInformation ScienceHealth Care
Coronary VesselsCoronary AngiographyCoronary Artery DiseaseCoronary StenosisCoronary CirculationCarotid StenosisAngioplasty, Balloon, CoronaryAortic Valve StenosisCoronary DiseasePericardiumCoronary Artery BypassSpinal StenosisTracheal StenosisStentsBlood VesselsConstriction, PathologicMyocardial InfarctionCoronary RestenosisCoronary VasospasmPyloric StenosisHeartCoronary Vessel AnomaliesMitral Valve StenosisDogsTreatment OutcomePulmonary Valve StenosisCoronary AneurysmRisk FactorsProspective StudiesMyocardiumFollow-Up StudiesTime FactorsCoronary ThrombosisBlood Flow VelocityMagnetic Resonance AngiographyPredictive Value of TestsEndothelium, VascularVasodilator AgentsNitroglycerinUltrasonography, InterventionalTomography, X-Ray ComputedHemodynamicsMyocardial IschemiaCalcinosisVascular ResistanceVasodilationElectrocardiographySeverity of Illness IndexVasa VasorumCoronary OcclusionSensitivity and SpecificityAdenosineSwineRetrospective StudiesPercutaneous Coronary InterventionModels, CardiovascularCardiac CatheterizationArteriesBlood PressureLymphatic VesselsVasoconstrictionAngioplasty, BalloonReproducibility of ResultsRenal Artery ObstructionContrast MediaNeovascularization, PhysiologicAcetylcholineExercise TestRetinal VesselsCoronary Care UnitsAortic Stenosis, SupravalvularAortic Stenosis, SubvalvularRegional Blood FlowCollateral CirculationVeinsEchocardiographyQuailCoturnixMuscle, Smooth, VascularTunica IntimaFeasibility StudiesAortic ValveNitric OxideCarotid Artery, InternalBiological MarkersAngiographyAngina PectorisGraft Occlusion, VascularFractional Flow Reserve, MyocardialRecurrenceEndarterectomy, CarotidArterial Occlusive DiseasesRisk AssessmentUltrasonography, Doppler, DuplexMyocardial RevascularizationTunica MediaSirolimusCatheterizationAngina, UnstableImage Processing, Computer-Assisted
AngiographyArteriesAtherosclerosisAngioplastyRight coronaLeft anterior descenStable coronary arterySubaortic stenosisDiseaseEpicardial coronary arteryCalcificationBypassStentNative coronaryLesionsCircumflexRevascularizationCardiacPulmonaryPerfusionAcute coronaryArtery calciumSeverity of stenosisCritical stenosisSingle-vesselCongestive heart fArterial stenosisFractional flow reComputed tomographyAnginaAortic valve replaPredictors of coronaryLumenMyocardiumInterventionsElevation acuteSevere coronaryMajor coronary arteryObstructionMitral valvePatientsVascularBalloonMyocardial ischaemiaBloodAneurysmValve
Angiography26
Arteries27
  • One of the most common angiograms performed is to visualize the coronary arteries. (wikipedia.org)
  • X-ray images of the transient radiocontrast distribution within the blood flowing inside the coronary arteries allows visualization of the size of the artery openings. (wikipedia.org)
  • Two or more vein grafts: 1 for the right coronary artery, 1 or more for the left coronary arteries, with native vessels having at least 75% stenosis. (mayo.edu)
  • 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)
  • Explain what is meant by "right dominant" with regards to coronary arteries. (brainscape.com)
  • The most common type of heart disease is coronary artery disease (CAD) , a narrowing of one or more of the arteries that supply blood to the heart. (baycare.org)
  • Buildup of fat and cholesterol inside the vessel causes this blockage, which leads to the narrowing arteries. (baycare.org)
  • Ano- malous aortic origin of coronary arteries. (scirp.org)
  • Anomalies of the coronary arteries. (scirp.org)
  • Rapid identification of the course of anomalous coronary arteries in adults: The 'dot and eye' method. (scirp.org)
  • Percutaneous transluminal coronary rotational atherectomy (PTCRA) debulks atherosclerotic plaque from coronary arteries using an abrasive burr. (cochrane.org)
  • PTCRA has been used both as an alternative to and in conjunction with balloon angioplasty to open up blocked coronary arteries. (cochrane.org)
  • To assess the effects of PTCRA for coronary artery disease in patients with non-complex and complex lesions (e.g. ostial, long or diffuse lesions or those arising from in-stent re-stenosis) of the coronary arteries. (cochrane.org)
  • From this study, it is concluded tht the myocardium distal to a critical stenosis suffers a progressive reduction in flow during ventricular fibrillation which does not occur in regions supplied by unstenosed coronary arteries. (johnshopkins.edu)
  • Nowadays artificial intelligence (AI) is heavily applied to enhance the process of segmenting coronary arteries and detecting coronary artery disease (CAD) using images obtained from CTCA. (edu.au)
  • This project's primary objective is to conduct an initial exploration and implementation of AI techniques for accurately and efficiently identifying the intricate structure of coronary arteries within CTCA images. (edu.au)
  • By the project's conclusion, students are expected to have successfully developed and validated AI/ML algorithms that assist with the identification and modelling of coronary arteries from CTCA images. (edu.au)
  • Stenosis or obstruction of coronary arteries might cause chest pain and heart attack (myocardial infarction) in the patient. (groupflorence.com)
  • The basic principle to prevent stenosis of coronary arteries is to improve risk factors. (groupflorence.com)
  • It is based on imaging of cardiac cavities and coronary arteries with injection of contrast material and also measuring the pressure of the cardiac cavities and associated vessels. (groupflorence.com)
  • Then coronary arteries are displayed and recorded. (groupflorence.com)
  • The term PAD is used to refer to the obstruction of blood flow in the arteries, but does not include coronary or intracranial vessels. (mercatormed.com)
  • Total body adiposity correlates with the amount of epicardial adipose tissue (EAT), a specific visceral fat accumulation around the myocardium in the proximity to the coronary arteries [ 2 ]. (biomedcentral.com)
  • In adolescents, severe aortic valve stenosis may lead to sudden death, most often during exercise, presumably because of an erratic heart rhythm caused by poor blood flow through the coronary arteries to the heart. (msdmanuals.com)
  • It enters the coronary arteries of the heart through peripheral blood vessels to dilate blood vessels. (menlaser.com)
  • Arteries are blood vessels that transport blood away from the heart, and veins transport the blood back to the heart. (medscape.com)
  • The right and left coronary arteries branch from the ascending aorta and, through their branches (anterior and posterior interventricular, marginal and circumflex arteries), supply the heart muscle (myocardial) tissue. (medscape.com)
Atherosclerosis6
  • When compared with the TID-negative control cohort, TID-positive patients had no significant differences in the presence and extent of atherosclerosis, the degree of coronary artery stenosis, or the calcium score at cardiac CT. (snmjournals.org)
  • 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)
  • Atherosclerosis is the build-up of fat and other substances within blood vessels. (cochrane.org)
  • Atherosclerosis is formation of plagues (produced by fatty accumulation and calcification) in the blood vessel wall. (groupflorence.com)
  • PAD can result from atherosclerosis, embolism, thrombus formation or inflammatory processes leading to arterial stenosis or blockage. (mercatormed.com)
  • Imaging tests can detect subclinical coronary atherosclerosis and aid initiation of targeted preventative efforts based on patient risk. (bvsalud.org)
Angioplasty6
  • Coronary artery bypass grafting (CABG) and percutaneous transluminal coronary angioplasty (PTCA) are more effective than medical treatment for the management of ischaemic heart disease. (nih.gov)
  • Compared to angioplasty alone, PTCRA/PTCA did not result in a higher incidence of major adverse cardiac events, but patients were more likely to experience vascular spasm, perforation and transient vessel occlusion. (cochrane.org)
  • In case the stenosis is critical, the treatment options can be balloon angioplasty-stent or bypass operation. (groupflorence.com)
  • A "two wires-two vessel" angioplasty technique provided extra support and is recommended to facilitate successful anomalous circumflex percutaneous coronary interventions. (ox.ac.uk)
  • [ 5 ] Finally, in 1977 Andreas Grüntzig performed the first percutaneous coronary angioplasty in a patient with angina pectoris and a stenosis of the left anterior coronary artery. (medscape.com)
  • In ORBITA, 230 patients with single vessel disease were enrolled and entered a 6 week medical optimization phase and were then randomized to angioplasty (105 patients) or a sham procedure (95 patients). (medscape.com)
Right corona6
  • 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)
  • Which portion of the right coronary artery is susceptible to atherosclerotic build up? (brainscape.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)
  • 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)
  • 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)
  • Acute inferior myocardial infarction and coronary spasm in a patient with an anomalous origin of the right coronary artery from the left sinus of Valsalva. (scirp.org)
Left anterior descen1
  • We have carried out such a comparison in patients with isolated proximal left anterior descending artery stenosis, conserved left ventricular function, and documented ischaemia. (nih.gov)
Stable coronary artery2
  • Mortality was 19% lower with revascularization for asymptomatic stable coronary artery disease (CAD) than with medication alone over more than 4 years' follow-up (11.9% vs 18.6%, HR 0.81, 95% CI 0.69-0.96), according to researchers led by Andrew Czarnecki, MD, MSc, of Sunnybrook Health Sciences Centre in Toronto, Ontario. (medpagetoday.com)
  • Rather, relief of angina is the main reason for performance of PCI in patients with stable coronary artery disease, and this effect is frequently noted. (the-hospitalist.org)
Subaortic stenosis1
  • To date, 3 dogs with subaortic stenosis has undergone cardiopulmonary bypass and open-heart correction of this defect at Texas A&M University. (vin.com)
Disease34
  • Cardiac imaging is central to the diagnosis and risk stratification of coronary artery disease, beyond symptoms and clinical risk factors, by providing objective evidence of myocardial ischaemia and characterisation of coronary artery plaque. (bmj.com)
  • However, coronary artery disease risk is also driven by biological processes, such as inflammation, that are not fully reflected by severity of stenosis, myocardial ischaemia or by coronary plaque features. (bmj.com)
  • Coronary artery disease risk assessment that incorporates clinical factors, plaque characteristics and perivascular inflammation offers a more comprehensive individualised approach to quantify and stratify coronary artery disease risk, with potential healthcare benefits for prevention, diagnosis and treatment recommendations. (bmj.com)
  • Cardiac CT (CCT) imaging has transformed the detection, characterisation and stratification of coronary artery disease (CAD) risk in individuals. (bmj.com)
  • Second, the ICA 'lumenogram' does not image disease in the vessel wall. (bmj.com)
  • Both CABG and PTCA improve the clinical status of symptomatic patients with single-vessel coronary artery disease. (nih.gov)
  • The presence of TID with an otherwise normal SPECT MPI study does not translate into a greater extent of coronary artery disease as assessed by cardiac CT or increased risk for future major adverse cardiac events. (snmjournals.org)
  • Previous studies have suggested that TID in the context of reversible myocardial perfusion defects is associated with increased risk of severe, extensive multivessel coronary artery disease (CAD) ( 1 , 6 , 7 ). (snmjournals.org)
  • Previous studies showed that fibrinogen-to-albumin ratio (FAR) regarded as a novel inflammatory and thrombotic biomarker was the risk factor for coronary artery disease (CAD). (hindawi.com)
  • However, none has addressed the association between FAR and severity of coronary artery disease (CAD), clinical outcome in NSTE-ACS patients firstly implanted with drug-eluting stent (DES). (hindawi.com)
  • Genetic variants associated with Lp(a) lipoprotein level and coronary disease. (nature.com)
  • The study cohort included 172 patients with angiographically confirmed premature coronary artery disease. (degruyter.com)
  • D allele carriers ( DD+ID genotypes) were more frequent in the subgroup of patients with stenoses in at least four coronary vessels than in other patients including subjects with one-, two- and three-vessel disease (97.4% vs. 74.4%, OR=13.05, 95% CI: 1.81-100.00, χ 2 =9.84, p=0.0017). (degruyter.com)
  • The ACE I/D polymorphism influences individual differences in severity of coronary artery disease and the D allele promotes generation of numerous and critical atherosclerotic lesions. (degruyter.com)
  • Prospective, multi-center, randomized, within-subject-controlled , trial, enrolling patients with multi vessel atherosclerotic coronary artery disease, scheduled to undergo SVG CABG with arterial grafting of IMA to LAD and two or more saphenous vein grafts. (mayo.edu)
  • Documented or suspected untreated diffuse peripheral vascular disease such as: carotid stenosis or claudication of the extremities. (mayo.edu)
  • Background:Noonan syndrome is a rare disease, mainly presenting with malformations such as dysplasia and stenosis of the pulmonary valve, atrial septal defect and a typical pattern of hypertrophic cardiomyopathy. (medscimonit.com)
  • It is a common presenting symptom (typically, chest pain) among patients with coronary artery disease (CAD). (medscape.com)
  • 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)
  • 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)
  • What is the main cause of coronary heart disease aka ischemic heart disease? (brainscape.com)
  • Some of the more common heart diseases include coronary artery disease , congestive heart failure, vascular disease, arrhythmias (abnormal heart rhythms), valve diseases and congenital heart defects . (baycare.org)
  • BayCare strives to educate members of the Tampa Bay area community about making lifestyle adjustments to minimize the chances of high blood pressure, stroke, heart attack, vascular disease, and coronary artery disease. (baycare.org)
  • This is an update of the review on 'Percutaneous transluminal rotational atherectomy for coronary artery disease' first published in The Cochrane Library Issue 4, 2003. (cochrane.org)
  • Coronary artery disease is a significant cardiovascular condition characterized by the narrowing or blockage of these vital blood vessels. (edu.au)
  • Additionally, as an extension of this endeavor, the research envisions automating the process of detecting signs of coronary artery disease, enabling early identification and timely intervention. (edu.au)
  • The exercise electrocardiogram (ECG) is used in the evaluation of symptomatic patients to predict the presence and extent of coronary artery disease (CAD) [1,2]. (who.int)
  • Mitral stenosis is a heart valve disease developed associated with acute rheumatic fever suffered in the childhood. (groupflorence.com)
  • Recent studies have focused on the potential role of epicardial adipose tissue (EAT) in the development of coronary artery disease (CAD). (biomedcentral.com)
  • Malkin CJ, George V, Ghobrial MS, Krishnan A, Siotia A, Raina T, Morton AC, Gunn J. Residual SYNTAX score after PCI for triple vessel coronary artery disease: quantifying the adverse effect of incomplete revascularisation. (nuffieldhealth.com)
  • Coronary atherosclerotic disease is a leading cause of mortality and morbidity due to major cardiovascular events in the United States and abroad. (bvsalud.org)
  • 5) Behavior Questionnaire elicited data on behavior which may be associated with coronary heart disease for examined persons ages 25-74. (cdc.gov)
  • An efficient approach to estimate the risk of coronary artery disease for people living with HIV using machine-learning-based retinal image analysis. (cdc.gov)
  • Machine learning improves mortality prediction in three-vessel disease. (cdc.gov)
Epicardial coronary artery2
  • They rated reader confidence for CAD and the four major epicardial coronary artery vessels were measured for hemodynamically significant stenosis (HS) on a 4-point Likert-scale, ranging from 1 being high and 4 being none. (diagnosticimaging.com)
  • The in situ LIMA graft is shown, along with the target vessel epicardial coronary artery native circumflex marginal branches in this single frame from the 1020 frame, 34 s image data sequence captured with each indocyanin green dye fluorophobe injection. (medscape.com)
Calcification2
  • CCT imaging for CAD initially quantified coronary artery calcification, as it was readily detected on CT images, and quantified to generate a coronary artery calcium score (CACS) that represented a surrogate marker of the presence and extent of CAD. (bmj.com)
  • Machine Learning Approach for Cardiovascular Risk and Coronary Artery Calcification Score. (cdc.gov)
Bypass7
  • The effect of a critical coronary artery stenosis on myocardial blood flow and metabolism in the fibrillating heart was assessed by placing 10 dogs on cardiopulmonary bypass, venting the ventricle, inducing ventricular fibrillation, and applying critical stenosis to the left anterior descending coronary artery (LAD). (johnshopkins.edu)
  • Thus prolonged fibrillation in the presence of a flow-limiting coronary stenosis may play a role in the pathogenesis of myocardial infarction during coronary bypass surgery. (johnshopkins.edu)
  • Importantly, the majority of these cases have been performed as off-pump coronary artery bypass (OPCABs) on a beating heart, allowing for the immediate physiologic evaluation of grafting. (medscape.com)
  • PAD therapies can include vessel bypass surgery or endovascular intervention: minimally invasive, catheter-based procedures that push or cut plaque out of the way so that normal blood flow can resume. (mercatormed.com)
  • Paired EAT and SAT samples were collected from 82 patients undergoing elective cardiac surgery either for coronary artery bypass grafting (CAD group, N = 66) or valve surgery (NCAD group, N = 16). (biomedcentral.com)
  • [ 4 ] Three years later René Favoloro performed the first successful coronary bypass operation using the saphenous vein. (medscape.com)
  • Also the results of bypass surgery were improved by the use of arterial grafts [ 7 ] and percutaneous coronary interventions (PCI) have been made more effective through the introduction of stents, particularly drug-eluting stents. (medscape.com)
Stent6
  • In this study, we sought to evaluate the relationship between FAR and severity of CAD, long-term prognosis in non-ST elevation acute coronary syndrome (NSTE-ACS) patients firstly implanted with drug-eluting stent (DES). (hindawi.com)
  • The procedural success rate, defined as successful stent delivery with less than a 50% residual stenosis and no in-hospital MACE, was 92.4% in Disrupt CAD III, compared to 83.4% for orbital atherectomy in ORBIT II. (medscape.com)
  • The mean diameter stenosis preprocedure was 65.1%, dropping to 37.2% post lithotripsy, with a final in-stent residual stenosis diameter of 11.9%, with a 1.7-mm acute gain. (medscape.com)
  • There is limited published evidence and no long-term data to support the routine use of PTCRA in in-stent re-stenosis. (cochrane.org)
  • Our company uses a precision laser cutting machine to process three coronary stent raw materials of different materials and different diameters into eight coronary stent samples, sales staff followed the whole proofing process, and showed customers the proofing process through video.Samples were provided for the supplied materials. (menlaser.com)
  • Dr Raina was awarded an MD by the University of Sheffield for a dTI funded research project investigating the role of human embryonic stem cells in promoting healing after coronary artery stent implantation. (nuffieldhealth.com)
Native coronary1
  • The fluorescent technique illuminates in the arterial phase both the native TVECA and the graft to visualize flow down both vessels, competitive flow interactions, whether grafting has compromised the native coronary flow and the anastomosis integrity (Figure 1). (medscape.com)
Lesions6
  • In this study, cardiac CT was used to evaluate the prevalence of atherosclerotic lesions and the severity of coronary artery stenosis in patients with TID of the left ventricle with or without associated myocardial perfusion defects on SPECT MPI. (snmjournals.org)
  • Angiotensin II is produced primarily by angiotensin I-converting enzyme (ACE) within atherosclerotic lesions and ACE level in plaques correlates with the severity of vessel wall damage. (degruyter.com)
  • Although supra and subvalvular lesions have been seen, the most common cause of pulmonic stenosis in dogs is valvular dysplasia. (vin.com)
  • Intravascular lithotripsy proved highly effective, safe, and user friendly as an adjunct to stenting for severely calcified coronary lesions at 30 days of follow-up in the pivotal Disrupt CAD III study aimed at gaining U.S. regulatory approval. (medscape.com)
  • In so doing, the intravascular lithotripsy device developed by Shockwave Medical successfully addressed one of the banes of contemporary interventional cardiology: heavily calcified coronary lesions. (medscape.com)
  • Severely calcified coronary lesions complicate percutaneous coronary intervention. (medscape.com)
Circumflex3
  • A giant left circumflex coronary artery-right atrium arteriovenous fistula detected by multislice spiral computed tomography. (scirp.org)
  • Endocardial and epicardial flow in the distribution of the unstenosed circumflex coronary artery remained unchanged. (johnshopkins.edu)
  • Anomalous circumflex artery: intravascular ultrasound imaging of dynamic compression and "two wire-two vessel" percutaneous intervention. (ox.ac.uk)
Revascularization5
  • However, these findings should be considered hypothesis generating and not be used as justification for routine revascularization of all coronary stenosis in asymptomatic patients. (medpagetoday.com)
  • The endpoints were major adverse cardiovascular events (MACE), including all-cause mortality, myocardial reinfarction, and target vessel revascularization (TVR). (hindawi.com)
  • Despite of the use of current guideline-recommended therapies, including prompt coronary revascularization, dual antiplatelet therapy, and intensive lipid-lowering therapy, ACS patients still have a poor prognosis [ 1 - 3 ]. (hindawi.com)
  • The primary safety endpoint of freedom from cardiac death, MI, or target vessel revascularization at 30 days was achieved in 92.2% of patients in the intravascular lithotripsy trial, versus 84.4% in ORBIT II. (medscape.com)
  • Endovascular therapies include embolotherapy (see the images below), the goal of which is the occlusion of abnormal blood vessels (eg, vascular malformations, aneurysms, and vascular tumors) and cerebral revascularization, the goal of which is to reopen occluded or narrowed normal vessels. (medscape.com)
Cardiac4
  • New cardiac CT techniques can assess coronary artery inflammation by imaging perivascular fat, and this may represent an important step forward in identifying the 'residual risk' that is not detected by plaque or ischaemia imaging. (bmj.com)
  • Prof. Dr. Bekeredjian and his team of 36 doctors perform around 3600 operations in their cardiac cath lab per year, including over 900 coronary interventions, 400 aortic valve procedures and 150 atrioventricular valve procedures. (philips.no)
  • Taylor AJ, Rogan KM, Virmani R. Sudden cardiac death associated with isolated congenital coronary artery ano- malies. (scirp.org)
  • Post-PCI coronary microvascular blood flow and myocardial perfusion were assessed by measuring Doppler-derived average peak velocity (APV), and cardiac biomarker levels were quantified. (bmj.com)
Pulmonary4
  • We report a case of Noonan syndrome with giant coronary aneurysms.Case Report:A young woman with the phenotypic characteristics of Noonan's syndrome presented with severe pulmonary stenosis and giant coronary aneurysms. (medscimonit.com)
  • Cross sectional echocardiography showed valvar and subvalvar pulmonary stenosis. (medscimonit.com)
  • In addition to the usual abnormalities of the pulmonary valve and the ventricular myocardium, the patient showed a wide spectrum of previously unreported coronary aneurysms.Conclusions:These additional findings support the hypothesis that a vasculitic process has been superimposed on the connective tissue defect associated with Noonan's syndrome. (medscimonit.com)
  • Before birth, the baby has a blood vessel that runs between the aorta (the main artery to the body) and the pulmonary artery (the main artery to the lungs), called the ductus arteriosus. (medlineplus.gov)
Perfusion4
  • Using the model, it was found that total coronary BF increased as coronary perfusion pressure was increased. (frontiersin.org)
  • Objectives Percutaneous coronary intervention (PCI) for acute coronary syndromes frequently fails to restore myocardial perfusion despite establishing epicardial vessel patency. (bmj.com)
  • In this study, we aim to define the role of endothelin in regulating coronary microvascular blood flow and myocardial perfusion following PCI in patients with non-ST elevation acute coronary syndromes (NSTACS), by assessing whether adjunctive therapy with a selective endothelin A (ET A ) receptor antagonist acutely improves postprocedural coronary microvascular blood flow. (bmj.com)
  • Hemodynamic significance of coronary stenosis by vessel attenuation measurement on CT compared with adenosine perfusion MRI. (musc.edu)
Acute coronary2
  • Acute coronary syndrome (ACS) is today one of the leading causes of morbidity and mortality in the world. (hindawi.com)
  • ACS is a group of clinical syndromes, including non-ST elevation acute coronary syndrome (NSTE-ACS) and ST elevation acute myocardial infarction (STEMI), with the pathogenesis of vulnerable plaque rupture, subsequent red or white thrombosis, thereby resulting in incomplete or complete vascular occlusion [ 4 ]. (hindawi.com)
Artery calcium1
  • Heterogeneity in the Association Between the Presence of Coronary Artery Calcium and Cardiovascular Events: A Machine Learning Approach in the MESA Study. (cdc.gov)
Severity of stenosis1
  • Treatment of mitral stenosis varies depending on the severity of stenosis. (groupflorence.com)
Critical stenosis1
  • 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)
Single-vessel2
  • However, patients with single-vessel involvement have been excluded from prospective comparisons of the two methods. (nih.gov)
  • The 230 patients who were enrolled in ORBITA had severe (70% or more), single-vessel stenosis. (the-hospitalist.org)
Congestive heart f1
  • Dogs with moderate to severe stenosis may experience syncope or changes leading to congestive heart failure and are at risk for sudden death. (vin.com)
Arterial stenosis1
Fractional flow re1
  • 70% stenosis in a major coronary vessel, or 30% to 70% stenosis, with fractional flow reserve ≤ 0.8). (medscape.com)
Computed tomography2
  • The use of automated detection of large vessel occlusion on computed tomography (CT) through artificial intelligence (AI) software reportedly led to an 11.2-minute reduction in triage time from the completion of imaging to initiation of endovascular therapy, according to newly published research. (diagnosticimaging.com)
  • Detection of coronary artery stenoses by contrast-enhanced, retrospectively electrocardiographically-gated, multislice spiral computed tomography. (scirp.org)
Angina4
  • The cohort study included patients in an Ontario registry with the Canadian Cardiovascular Society class 0 angina and substantial stenosis in a major coronary vessel (n=9,897). (medpagetoday.com)
  • For example, in one of their studies, Proudfit et al 3 concentrated on the number of severe stenoses and correlated them to clinical characteristics such as duration of the history of angina pectoris, distribution of pain, and serum cholesterol. (dovepress.com)
  • 90% stenosis of a coronary artery is likely to cause _______ angina. (brainscape.com)
  • Percutaneous coronary intervention in stable angina (ORBITA): A double--blind, randomised controlled trial. (the-hospitalist.org)
Aortic valve repla1
  • Because of progressive stenosis, the patient underwent aortic valve replacement with a bioprosthesis in May 2011. (cdc.gov)
Predictors of coronary1
  • Stepwise multiple regression analysis with backward elimination revealed diabetes status, sex, and fibrinogen Clauss as significant predictors of coronary score. (dovepress.com)
Lumen2
  • Intravascular imaging, using ultrasound (IVUS) or optical coherence tomography, reveals that angiographic assessment of the coronary lumen grossly underestimates the presence, nature and extent of coronary artery plaque. (bmj.com)
  • The degree of stenosis can be determined by comparing the width of the lumen of narrowed segments of blood vessel with wider segments of adjacent vessel. (wikipedia.org)
Myocardium1
Interventions1
  • Although non-invasive interventions may not affect existing large vessel structural defects such as stenosis, it is thought that adenosine stress and dialysate cooling therapy may improve myocardial BF by vasodilation of the smaller blood vessels. (frontiersin.org)
Elevation acute1
  • Several randomized, controlled trials have assessed the efficacy of the upstream administration of tirofiban (Platelet Receptor Inhibition for ischemic Syndrome Management in Patients Limited to very Unstable Signs and symptoms [PRISM-PLUS] regimen) in patients with non-ST-segment elevation acute coronary syndromes (ACS) (1,2) . (jacc.org)
Severe coronary1
  • Instead, the comparator group selected under regulatory guidance was comprised of patients who had received orbital atherectomy for severe coronary calcifications in the earlier, similarly designed ORBIT II trial, which led to FDA marketing approval of that technology. (medscape.com)
Major coronary artery1
  • The catheter is threaded into an artery in the forearm, and the tip is advanced through the arterial system into the major coronary artery. (wikipedia.org)
Obstruction3
  • These plagues may result in obstruction or stenosis of the vessels. (groupflorence.com)
  • This can lead to re-obstruction, or restenosis, of the vessel. (mercatormed.com)
  • How does venous obstruction (jugular vein stenosis) occur in a neck? (caringmedical.com)
Mitral valve3
  • Mitral stenosis is a narrowing of the mitral valve opening that blocks (obstructs) blood flow from the left atrium to the left ventricle. (msdmanuals.com)
  • Mitral stenosis occurs when two leaflets of the valve thicken and attach to each other, and is characterized by narrowed valve as a result of thickened and shrunk muscles and fibers holding the mitral valve. (groupflorence.com)
  • With progressed stenosis, percutaneous mitral balloon valvuloplasty (PMBV) or open heart surgery (surgical repair or replacement of mitral valve) is performed. (groupflorence.com)
Patients3
  • We sought to determine the safety and efficacy of high-dose bolus (HDB) tirofiban in high-risk patients undergoing percutaneous coronary intervention (PCI). (jacc.org)
  • In particular, in patients with acute coronary syndromes undergoing PCI, there is no evidence that tirofiban administered in the catheterization laboratory is superior to heparin alone. (jacc.org)
  • Malkin CJ, Ghobrial MS, Raina T, Siotia A, Morton AC, Gunn J. Impact of incomplete revascularisation in patients undergoing PCI for unprotected left main stem stenosis. (nuffieldhealth.com)
Vascular3
  • To dissect vascular mechanisms, a 3D human vasculature model based on known experimental coronary morphometry and a space filling algorithm was implemented. (frontiersin.org)
  • Size of the vascular bed perfused by the obstructed vessel. (brainscape.com)
  • Following percutaneous coronary intervention (PCI) for acute coronary syndromes, rise in endothelin-1 (ET-1) levels, a potent vasoconstrictor produced by the vascular endothelium, has been proposed as a potential mediator of reperfusion injury and 'no reflow' phenomenon. (bmj.com)
Balloon1
Myocardial ischaemia1
  • First, two-dimensional imaging cannot assess haemodynamic consequences of stenoses, in terms of myocardial ischaemia. (bmj.com)
Blood20
  • The film or image of the blood vessels is called an angiograph, or more commonly an angiogram. (wikipedia.org)
  • Images in this case are usually taken at 2-3 frames per second, which allows the interventional radiologist to evaluate the flow of the blood through a vessel or vessels. (wikipedia.org)
  • Both these techniques enable the interventional radiologist or cardiologist to see stenosis (blockages or narrowings) inside the vessel which may be inhibiting the flow of blood and causing pain. (wikipedia.org)
  • A thin, flexible tube (catheter) is inserted through the radial artery in the hand and into the heart and its blood vessels. (medicinenet.com)
  • The catheters used in the earlier days were larger and needed a large blood vessel to go through. (medicinenet.com)
  • Advancement in technology has made transradial catheterization possible with thinner catheters that can go through smaller blood vessels. (medicinenet.com)
  • Simultaneously, blood stasis, endothelial damage, and hypercoagulability were also considered risk factors for acute coronary thrombotic events [ 7 ]. (hindawi.com)
  • Steady state simulations were performed to investigate the effects of altered aortic pressure and blood vessel diameters on myocardial BF heterogeneity. (frontiersin.org)
  • BF heterogeneity was found to be inversely related to small blood vessel diameters. (frontiersin.org)
  • Finally, the effects of augmented aortic pressure in the presence of blood vessel blocking shows differential effects on BF heterogeneity as well as transmural BF. (frontiersin.org)
  • This mathematical modeling study explores some of the coronary vasculature based causes of myocardial blood flow (BF) heterogeneity. (frontiersin.org)
  • Not smoking - Smoking harms the heart and blood vessels by reducing HDL cholesterol, restricting the blood vessels, reducing oxygen levels in the blood and increasing blood pressure. (baycare.org)
  • In mitral stenosis, blood flow through the narrowed valve opening is reduced. (msdmanuals.com)
  • Endocardial and epicardial blood flows were measured by the radioactive microsphere technique prior to the application of the stenosis and after one hour and 2 hours of fibrillation. (johnshopkins.edu)
  • Mitral stenosis prevents oxygenated blood coming from the lungs from passing from the left atrium to the left ventricle. (groupflorence.com)
  • Aortic valve stenosis is a narrowing of the valve that opens to allow blood to flow from the left ventricle into the aorta and then to the body. (msdmanuals.com)
  • Defects may involve abnormal formation of the heart's walls or valves or of the blood vessels that enter. (msdmanuals.com)
  • Blood is transported through the whole body by a continuum of blood vessels. (medscape.com)
  • Oxygen-poor systemic blood reaches the right atrium via 3 major venous structures: the superior vena cava, inferior vena cava, and coronary sinus. (medscape.com)
  • Then the surgeon inserts a wire into a blood vessel that goes to the heart. (medlineplus.gov)
Aneurysm2
  • A 78-year-old man had a medical history of aortic valve stenosis of a tricuspid valve, abdominal aortic aneurysm, and endovascular aneurysm repair in 2005. (cdc.gov)
  • A machine learning model for non-invasive detection of atherosclerotic coronary artery aneurysm. (cdc.gov)
Valve7