• Papillary muscle rupture can be caused by a myocardial infarct, and dysfunction can be caused by ischemia. (wikipedia.org)
  • The mitral valve papillary muscles in the left ventricle are called the anterolateral and posteromedial muscles. (wikipedia.org)
  • The papillary muscle (PM) is an integral component of the mitral valve apparatus. (biomedcentral.com)
  • The papillary muscles tether the mitral valve (the valve between the left atrium and the left ventricle ) and the tricuspid valve (the valve between the right atrium and the right ventricle ) to the wall of the heart. (wikidoc.org)
  • If the papillary muscles are not functioning properly, the mitral valve leaks during contraction of the left ventricle and causes some of the blood to travel "in reverse", from the left ventricle to the left atrium, instead of forward to the aorta and the rest of the body. (wikidoc.org)
  • Acute myocardial infarction (MI), commonly known as a heart attack, is a condition characterized by ischemic injury and necrosis of the cardiac muscle. (medscape.com)
  • Papillary Muscle Disorders Numerous complications can occur as a result of an acute coronary syndrome and increase morbidity and mortality. (msdmanuals.com)
  • Anterolateral muscle blood supply: left anterior descending artery - diagonal branch (LAD) and left circumflex artery - obtuse marginal branch (LCX) Posteromedial muscle blood supply: right coronary artery - posterior interventricular artery (RCA) The posteromedial muscle ruptures more frequently because it only has one source of blood supply, hence RCA occlusion can cause papillary muscle rupture. (wikipedia.org)
  • This makes the posteromedial papillary muscle significantly more susceptible to ischemia. (wikidoc.org)
  • The papillary muscles of both the right and left ventricles begin to contract shortly before ventricular systole and maintain tension throughout. (wikipedia.org)
  • Objectives: The goal of this study was to assess the relationship of left ventricular (LV) trabeculae and papillary muscles (TPM) with clinical characteristics in a community-based, free-living adult cohort and to determine the effect of TPM on quantitative measures of LV volume, mass, and ejection fraction (EF). (tue.nl)
  • In this paper we propose an alternative approach for the implementation of real-time mode in the experiments on muscle preparations (papillary muscles, trabeculae, walls of vessels) based on an external input-output cards with built-in analog-to-digital/digital-to-analog converters and signal processor. (scirp.org)
  • None of the affected patients had hypertrophy localized only at the level of the papillary muscle with mid left ventricular obstruction. (nih.gov)
  • The Frequency of Fabry Disease in Patients with Cardiac Hypertrophy of Various Phenotypes Including Prominent Papillary Muscle: The TUCARFAB Study in Turkey. (cdc.gov)
  • The clinical significance of the nature of blood supply to the papillary muscles is that a myocardial infarction involving the PDA is more likely to cause mitral regurgitation. (wikidoc.org)
  • Severe ischemia can cause the heart muscle to die of oxygen starvation, called a myocardial infarction . (wikidoc.org)
  • Taxine B (1), the most potent compound of this group, reduced cardiac contractility and the maximum rate of depolarisation of the action potential in the isolated papillary muscle, acting as a class I antiarrhythmic drug. (unito.it)
  • Background-Idiopathic ventricular arrhythmias (VAs) can originate from the left ventricular papillary muscles (PAMs). (umn.edu)
  • Although blood fills the chambers of the heart, the muscle tissue of the heart, the myocardium , is so thick that it requires coronary blood vessels to deliver blood deep into it. (wikidoc.org)
  • Arrector pili muscles span both layers of the dermis, they originate in the papillary dermis and attach to hair follicles in the reticular dermis. (khanacademy.org)
  • The mechanical and electrical effects of selected yew alkaloids were studied on two different cardiac preparations: the isolated coronary perfused heart and the isolated papillary muscle of the guinea-pig. (unito.it)
  • Cardiovascular disease (CVD) is a world-leading health problem and encompasses a broad spectrum of disorders, including diseases of the blood vessels, the heart muscle, the electrical conduction system, and congenital heart disease. (springer.com)
  • The coronary circulation is the circulation of blood in the blood vessels that supply blood to and from the heart muscle itself. (wikidoc.org)
  • Cardiac veins are the vessels that remove the deoxygenated blood from the heart muscle. (wikidoc.org)
  • The cardiac veins are the vessels that remove the deoxygenated blood from the heart muscle and return it to the right atrium . (wikidoc.org)
  • To determine whether catecholamines produce alterations in myocardialmyosin-actin cycling kinetics, we investigated the effects of isoproterenol upon mechanical characteristics of constantly activated heart muscle thought to reflect crossbridge behavior. (njit.edu)
  • These arteries, when healthy, are capable of autoregulation to maintain coronary blood flow at levels appropriate to the needs of the heart muscle . (wikidoc.org)
  • he coronary arteries supply oxygenated blood to the heart muscle itself. (wikidoc.org)
  • Smaller arteries dive deep into the heart muscle and are called subendocardial coronary arteries. (wikidoc.org)
  • The heart is a functional syncytium as opposed to a skeletal muscle syncytium . (wikipedia.org)
  • Cardiac muscle has some similarities to neurons and skeletal muscle, as well as important unique properties. (wikipedia.org)
  • Like skeletal muscle, depolarization causes the opening of voltage-gated calcium channels and release of Ca 2+ from the t-tubules . (wikipedia.org)
  • bed into the left ventricle, from where or intramyocardial, However, when a Most patients with calcification of it could reach any part of the body cyst is located in subendocardial en- the cyst wall remain asymptomatic for through systemic circulation [1-3]. (who.int)
  • The dothelium, depending on the potency a long time or have nonspecific symp- first successful surgical intervention on of the immune system, patients may toms, such as thrush, pruritus, fever, hydatid cyst was reported by Long in be asymptomatic, silent or catastrophic chest pain and muscle weakness. (who.int)
  • This is a short axis of the left ventricle (LV) at the papillary-muscle level. (medscape.com)
  • As a result, we developed a hardware-software complex for studying the mechanical properties of biological materials (muscles) in real-time mode. (scirp.org)
  • These arteries and their branches supply all parts of the heart muscle with blood. (medicinenet.com)
  • No alterations in electrical and contractile activities were in fact recorded after perfusion of the isolated papillary muscle with 4. (unito.it)