|
| |
| | Heart Anatomy |
 | | As the papillary muscles contract and relax, the chordae tendineae transmit the resulting increase and decrease in tension to the respective valves, causing them to open and close. | | | The chordae tendineae are string-like in appearance and are sometimes referred to as "heart strings." | | | When the papillary muscles relax, the valves close. |
|
http://www.cardioconsult.com/Anatomy
|
|
| |
| | [No title] |
| | The objectives of this study were to compare the stress relaxation properties of different types of chordae and relate their variation to structural features. | | | The Relationship between Collagen Fibrils, Glycosaminoglycans and Stress Relaxation in Mitral Valve Chordae Tendineae Jun Liao, Ivan Vesely The Cleveland Clinic Foundation, Cleveland, OH, United States PRIVATEOBJECTIVES: Mechanical properties of mitral valve chordae tendineae are known to be related to their structural make-up. | | | The amount of stress relaxation and the relaxation rates were found to increase in the order of marginal, basal, and strut chordae. |
|
http://www.icr-heart.com/biennial2003/files/17090.doc
|
|
| |
| | eMedicine - Mitral Regurgitation : Article by Shivkumar Jha, MD |
| | Chordae tendineae attach to papillary muscles and prevent prolapse of the mitral valve leaflet to prevent reflux of blood into the left atrium. | | | With chronic mitral valve regurgitation, evidence of calcification of the valve leaflets and annulus may be observed. | | | Acute MR Ruptured chordae or papillary muscle due to acute myocardial infarction or trauma |
|
http://www.emedicine.com/MED/topic1485.htm
|
|
| |
| | WSAVA 2001 - Chronic Valvular Heart Disease in Dogs |
| | Ruptured chordae tendineae are commonly observed during echocardiographic examination of dogs with advanced MR. | | | In some dogs, the chordae or valvular tissue is redundant or lax and the valve will prolapse leading to a midsystolic click. | | | Also known as chronic myxomatous valvular heart disease, this disorder is the most important cause of heart disease in veterinary practice. |
|
http://www.vin.com/VINDBPub/SearchPB/Proceedings/PR05000/PR00033.htm
|
|
| |
| | Text |
| | Tricuspid valve dysplasia (TVD) is defined as congenital malformation of the tricuspid valve leaflets, chordae tendineae, and/or papillary muscles. | | | Consequently, the papillary muscles often attach directly to the valve leaflets. | | | Described lesions in humans include focal or diffuse thickening of the valve leaflets, underdevelopment of chordae tendineae and papillary muscles, incomplete separation of valve components from the ventricular wall, and focal agenesis of valvular tissue. |
|
http://www.vmth.ucdavis.edu/cardio/cases/case23/text.htm
|
|
| |
| | Possible cause for echogenic chordae tendineae in prenatal asians |
| | I recently learned that echogenic chordae tendineae occurs in 30% to 40% of prenatal asians, and only 5% to 10% of other ethnicities. | | | A question researchers may want to ask expectant asian mother's when this calcification/mineralization is discovered in the unborn child is whether or not they regularly consume betelnut, or supari. | | | Possible cause for echogenic chordae tendineae in prenatal asians |
|
http://www.thehelparchive.com/new-474547-9.html
|
|
| |
| | University of Miami School of Medicine - Glossary - Chordae tendineae |
| | Chordae tendineae: Thread-like bands of fibrous tissue which attach on one end to the edges of the tricuspid and mitral valves of the heart and on the other end to the papillary muscles, small muscles within the heart that serve to anchor the valves. | | | University of Miami School of Medicine - Glossary - Chordae tendineae |
|
http://www.med.miami.edu/glossary/art.asp?articlekey=2717
|
|
| |
| | Human Anatomy - Lab 20 Step 19 |
| | Identify the chordae tendineae, the small fibrous cords, that extend from the cusps of the tricuspid valve to three papillary muscles. | | | Examine the right atrioventricular valve, and identify its three cusps [cross-section]: an anterior cusp [held by the forceps], a septal cusp, and a posterior cusp [indicated by probe; forceps hold chordae tendineae of anterior cusp]. |
|
http://ect.downstate.edu/courseware/haonline/labs/l20/190105.htm
|
|
| |
| | [No title] |
| | The aim of this study was to investigate the impact of MRA on the tension of primary (PCT) and secondary (SCT) chordae tendineae of the anterior mitral valve leaflet (AMVL) in vivo. | | | Differences from baseline in MRA and Sham operated animals, respectively, are listed in the table. | | | MRA may therefore protect repairs of the central portion of AMVL and SCT but not repairs that solely involve the AMVL leading edge and adjacent chordae. |
|
http://www.icr-heart.com/biennial2003/files/16823.doc
|
|
| |
| | Mitral valve prolapse |
| | Severe mitral valve prolapse is associated with arrhythmias and atrial fibrillation that may progress and lead to sudden death. | | | Approximately 7% of classic MVP patients experience severe regurgitation, often due to chordae tendineae rupture. | | | Elongation of the chordae is often sufficient to cause rupture, as is often found in the chordae tendineae attached to the posterior leaflet. |
|
http://brainyencyclopedia.com/encyclopedia/m/mi/mitral_valve_prolapse.html
|
|
| |
| | Text |
| | The rough zone chordae are thickened and chordal rupture may be evident, resulting in mitral valve flail. | | | Myxomatous degeneration primarily affects the mitral and tricuspid valve leaflets and the chordae tendineae. | | | The mitral AV valve apparatus is made up of the mitral valve leaflets, the annulus of the mitral valve, the chordae tendineae, and the left ventricular papillary muscles. |
|
http://www.vmth.ucdavis.edu/cardio/cases/case9/text.htm
|
|
| |
| | VM 8754: CHRONIC VALVULAR HEART DISEASE (CVD) IN THE DOG |
| | Ruptured chordae tendineae - Chordae tendineae extend from papillary muscles to mitral valve leaflets. | | | The condition is more common in breeds in which ruptured chordae tendineae, intervertebral disc disease and anterior cruciate ligament ruptures occur. | | | The chordae tendineae are thickened at their point of insertion on the valves, especially the first order chordae. |
|
http://education.vetmed.vt.edu/Curriculum/VM8754/VI.html
|
|
| |
| | e-heart.org Home |
| | These changes are exaggerated as a function of age, with fibrosis (sclerosis) being the predominant change at the base and myxoid degeneration at the free edge. | | | This arrangement is consistent with the need of the valve for elasticity near the annulus and at the insertion site of the strongest of the chordae. | | | The leaflet can be divided into three zones: a rough zone where first and second order chordae insert, a clear zone, and a basal zone where third order chordae insert. |
|
http://e-heart.org/Pages/01_Cardiac_Structure/01_Cardiac_Structure_MV_01.htm
|
|
| |
| | Functional differentiation of mitral valve chordae tendineae |
| | Surgical techniques in mitral valve repair are applied without sufficient knowledge of the function of different types of chordae tendineae (CT). | | | This was supported by the fact that secondary chordae were found to carry about thrice as much load as the primary chordae. | | | A tendency towards an early tightening of primary chordae was found, substantiating primary CT as free edge controlling CT and secondary CT as load relievers. |
|
http://www.danmedbul.dk/DMB_2004/0204/0204-phd/DMB3608.htm
|
|
| |
| | Mitral valve prolpse --The Doctors Lounge(TM) |
| | Once more thank you very much for using our website http://thedoctorslounge.net and if you still have any questions do not hesitate to ask them. | | | In cases of mitral valve prolapse, rupture of the chordae tendineae is more common in males over 50 years who actually have chronic mitral regurge and this leads to worsening of their already present mitral regurge. | | | In cases of mitral valve prolapse, the abnormality is thought to be secondary to some kind of a degenerative process. |
|
http://www.thedoctorslounge.net/cardiology/forums/backup/topic-106.html
|
|
| |
| | Definition: Ruptured chordae tendineae Med Terms Med School Chat |
| | Characteristics include adramatic holosystolic apical murmur, precordial thrill, chest pain, dyspnea. | | | Rupture of the chordae of the mitral valve is not uncommon. | | | MSC Community - CHAT with Doctors, Pre-Med and Med Students. |
|
http://www.medschoolchat.com/MED-Terms-term-id7073.html
|
|
| |
| | Clinical Characteristics of Ruptured Chordae Tendineae in Hospitalized Patients: Primary Tear versus Infective ... |
| | Primary rupture of the chordae tendineae had been diagnosed in 11 patients, while infectious endocarditis was the cause for the tear of the chordae tendineae in 9 patients. | | | The patients who had primary rupture of the chordae were older than the patients with endocarditis (67.4 ± 11.3 vs. 57 ± 9.3 years, respectively, p<0.05). | | | Background: Several etiologies have been associated with the rupture of chordae tendineae. |
|
http://www.clinicalcardiology.org/briefs/9811briefs/21-813.html
|
|
| |
| | Title page for ETD etd-09062004-120502 |
| | This study demonstrates the first in vitro examination of the strain experienced by the chordae tendineae of the mitral valve. | | | Different structural levels were observed for all chordae. | | | This research combines basic histology with standard mechanical tests to determine the functioning role of the chordae tendineae during the cardiac cycle. |
|
http://etd.gatech.edu/theses/available/etd-09062004-120502
|
|
| |
| | CHORDAE TENDINEAE |
| | The papillary muscles (PM) anchoring the cords to the heart wall will contract to counter any stretch in the cordae tendineae (CT) during vigorous pumping of the heart. |
|
http://faculty.ucc.edu/biology-potter/Heart_Anatomy/sld017.htm
|
|
| |
| | PTHL 312abc Study Questions |
| | Shortened chordae tendineae, scarring, and perforation of valve leaflets are common sequelae of | | | To make the unanswered question reappear, click on corresponding question number in the bottom frame. | | | No, damaged chordae tendineae and valve leaflets are not features of myocardial infarction. |
|
http://www.usc.edu/hsc/dental/PTHL312abc/312c/22/q_08B.html
|
|
|
