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| | PEDIATRIC CARDIOLOGY |
 | | During this phase of the cardiac cycle, transseptal flow was demonstrated from the morphologic right ventricle to the morphologic left ventricle in 72 (96%) of the 75 studies. | | | Each of the two patients with 1-transposition of the great vessels had flow from the morphologic left to the morphologic right ventricle during isovolumetric contraction and flow from the morphologic right ventricle to the morphologic left ventricle during isovolumetric relaxation, eliminating the role of the AV connection. | | | There was asynchrony in the rate of relaxation of the two ventricles, which produced a consistent right to left shunt during the isovolumetric relaxation phase of the cardiac cycle. |
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http://www.siuh.edu/pediatrics/articles/doc9.html
(4509 words)
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| | Valves of the Heart |
| | As the left ventricle contracts, the oxygenated blood leaves the heart and crosses the aortic valve, which is the valve that helps to control the flow of blood out of the heart to the body. | | | As the pressure changes within the left atrium and left ventricle, the mitral valve opens, allowing the oxygenated blood to flow into the left ventricle. | | | By closing at this time, the mitral valve prevents the oxygenated blood in the left ventricle from flowing back to the lungs. |
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http://www.surgery.usc.edu/divisions/ct/hpg-valvesoftheheart3.html
(426 words)
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| | President's Message |
| | These concepts were centered on the fact that “echocardiography is the heart of clinical cardiology,&; especially when it comes to evaluating changes the left ventricle undergoes from both the disease processes and therapeutic intervention. | | | Just as change comes to the left ventricle through both disease processes and therapeutic intervention, we must change the way we approach the evaluation of the left ventricle. | | | A spherical, globular ventricle is an unhappy and bad ventricle because there are dramatic elevations of wall stress and alterations in neurohormonal balance. |
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http://www.asecho.org/Archives/Presidents_Message/body_april04.php
(1258 words)
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| | Surgery for left ventricular aneurysm |
| | In 1990, the main problem relating to the surgery of left ventricular aneurysm (LVA) is not the exact definition of these lesions but the choice of surgical technique, knowledge of immediate and long-term results, and the limits of indications for surgery. | | | This left ventricular reconstruction is possible with an operative risk below 10% whatever the circumstances of surgery, with objective improvement of the ventricular function of greater than 20% for the global ejection fraction and of greater than 5% for the contractile ejec tion fraction. | | | Regarding surgical treatment of LVA with ventricular tachycardia resulting in poor outcome in left ventricular function, as experienced by Cosgrove [3], Willman[4] analyzed the Cox experience (Circulation 1989, 79[suppl I]:163-177) and recommended not performing endocardial resection in these cases but using a defibrillator. |
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http://www.ccm.mc/publications/article01.html
(3965 words)
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| | TheFetus.net - Aneurysm, left ventricle-Luís F. Gonçalves, MD, Jeffrey Sims, MD, Philippe Jeanty, MD, PhD |
| | The left ventricular endocardium was thickened, especially along the left ventricular free wall, giving the mitral valve papillary muscles a contracted, fibrotic appearance. | | | Figure 2: Color Doppler demonstrates normal flow through the right ventricle and outflow tract, whereas no flow is observed through the left ventricle. | | | Asymptomatic at birth; successful elective surgical excision of the left ventricular aneurysm at age 8.5 months. |
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http://www.thefetus.net/page.php?id=33
(1813 words)
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| | Tetralogy of Fallot, Cincinnati Children's Hospital Medical Center |
| | Most babies are fairly sick in the first few days after surgery, since the right ventricle is "stiff" from the previous hypertrophy and because an incision is made into the muscle of the ventricle, making the muscle temporarily weaker. | | | The narrowing of the pulmonary valve and right ventricular outflow tract is then augmented (enlarged) by a combination of cutting away (resecting) obstructive muscle tissue in the right ventricle and by enlarging the outflow pathway with a patch. | | | Some patients with tetralogy of Fallot have complete obstruction to flow from the right ventricle, or pulmonary atresia. |
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http://www.cincinnatichildrens.org/health/heart-encyclopedia/anomalies/tof.htm
(1583 words)
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| | MedlinePlus Medical Encyclopedia: Hypoplastic left heart |
| | The problem develops before birth when there is inadequate growth of the left ventricle and associated structures (aortic and mitral valves that guard the exit and entrance of the ventricle and the aorta which is the blood vessel that carries oxygenated blood from the left ventricle to the entire body). | | | In patients with this condition, the left side of the heart is unable to maintain blood circulation for the body. | | | It is important to note that the size and function of the right ventricle are important determinants of outcome after surgery. |
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http://www.nlm.nih.gov/medlineplus/ency/article/001106.htm
(1060 words)
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| | Heart Failure: LV reconstruction (Dor) |
| | After surgery, most patients have improvement in heart failure and/or angina (chest pain) symptoms and an improvement in the pumping ability of the left ventricle (ejection fraction). | | | The goal is to improve heart failure and/or angina (chest pain) symptoms and possibly to improve the pumping ability of your heart. | | | This machine oxygenates the blood and circulates it throughout the body during surgery. |
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http://clevelandclinic.org/heartcenter/pub/guide/disease/heartfailure/dor.htm
(1593 words)
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| | left ventricle |
| | Age-related changes in pumping mechanical behavior of rat ventricle in terms of systolic elastance and resistance. | | | Age variance of left ventricular diameters in dogs with cardiac disease. | | | Aged rat hearts are not more susceptible to ischemia-reperfusion injury in vivo: role of glutathione. |
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http://www.arclab.org/node_pages/989.html
(567 words)
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| | Congenital Heart Defects |
| | This is a narrowing of a portion of the aorta, and often seriously decreases the blood flow from the heart out to the lower portion of the body. | | | In this condition, the pulmonary artery and the aorta (the major blood vessels leaving the heart) are switched so that the aorta arises from the right side of the heart and receives blue blood, which is sent right back out to the body without becoming oxygen-rich. | | | This is the normal pathway that blood travels through the heart and the body. |
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http://kidshealth.org/parent/medical/heart/congenital_heart_defects.html
(1890 words)
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| | Heart Anatomy |
| | It closes as the ventricles relax, preventing blood from returning to the heart. | | | 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. | | | When the papillary muscles relax, the valves close. |
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http://www.cardioconsult.com/Anatomy
(1174 words)
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| | hlhsinfo |
| | Blood then flows back to the heart via the left atrium to the left ventricle, which pumps this oxygenated blood through the aorta out to the body. | | | Very simply, in a healthy heart blood flows from the right atrium to the right ventricle where it is then pumped through the pulmonary artery to the lungs to be oxygenated. |
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http://www.hlhsinfo.homestead.com
(1304 words)
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| | BHF Any Questions? - Double inlet left ventricle |
| | A child may be born without a second ventricle or it may be underdeveloped. | | | The heart then pumps it through the aorta and around the body. | | | Soon after birth, babies with this condition appear quite blue in colour. |
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http://www.bhf.org.uk/questions/index.asp?secondlevel=1160&thirdlevel=1277
(485 words)
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| | [No title] |
| | The heart is a muscle which contracts and relaxes. | | | Now, we will begin to look at the problem of supplying oxygen rich blood to the body: the function of the left ventricle of your heart. | | | are the pressures in the atrium and ventricle, respectively; V |
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http://grapevine.abe.msstate.edu/classes/abe4803/lec24-98.htm
(994 words)
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| | Hypoplastic Left Heart Syndrome |
| | The first stage, referred to as the Norwood procedure, allows the right ventricle to pump blood to both the lungs and the body. | | | If you and your child's doctor agree that surgery should be performed, it will be done in several stages. | | | Virtually all the children will require heart medicines. |
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http://www.americanheart.org/presenter.jhtml?identifier=1353
(473 words)
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| | Segmentation of the Left Ventricle |
| | The left ventricle is the most important component of the heart since it pumps oxygenated blood to the body. | | | Automated tools for automatic quantification as well as monitoring of its behavior are of increasing demand. | | | During the past 5 years, we have developed various solutions to address this problem using variational principles. |
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http://cermics.enpc.fr/~paragios/cardiac.html
(297 words)
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| | Tropical Medicine Central Resource |
| | A chest radiograph reveals little if any cardiac enlargement although the left atrium may cast a double shadow. | | | The peripheral arteries do not change and there is no pulmonary edema. | | | Biventricular disease is dominated clinically and radiologically by the right side, because the low cardiac output tends to protect and mask the left-sided changes. |
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http://tmcr.usuhs.mil/tmcr/chapter25/clinical3.htm
(429 words)
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| | D. Heart Chambers and Valves OH-122 |
| | When the ventricular muscles relax, this valve closes and prevents blood from backing up into the ventricle. | | | When the right ventricular muscles relax, blood begins to back up causing the semilunar valve to close. | | | Deepest is the coronary sulcus which encircles the heart between the atrial and ventricular portions. |
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http://www.cayuga-cc.edu/people/facultypages/greer/biol204/heart2/heart2.html
(539 words)
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| | Figures |
| | The right-hand side of the figure shows the bidirectionality of the shunt with systolic (isovolumic contraction) flow from left-to-right (negative Doppler shift) and diastolic (isovolumic relaxation) flow across the ventricular septal defect from right-to-left (positive Doppler shift). | | | The four-chamber view demonstrates clearly a markedly thickened right ventricle with both free wall and septum significantly hypertrophied. | | | The multicusp truncal valve is well visualized in the study. |
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http://www.siuh.edu/pediatrics/articles/doc11figs.html
(690 words)
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| | Anatomy Physiology: Pericardium encloses 30ml fluid |
| | Left Ventricle receives from Right Atrium & ejects to Body | | | U wave: origin for this wave is not clear - but probably represents "afterdepolarizations" in the ventricles | | | Afteload – resistance to left ventrical ejection~ increases by increased systemic arterial pressure |
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http://www.freewebs.com/paulamarie/Nursing213/Heart.html
(304 words)
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| | Double Inlet Left Ventricle - What is it? |
| | Double Inlet Left Ventricle is one of the so-called Single Ventricle heart defects, as there is effectively only one pumping chamber in the heart. | | | The right ventricle is frequently small and both the mitral and tricuspid valve open into the enlarged left ventricle, which is on the right-hand side of the body. | | | Double Inlet Left Ventricle - What is it? |
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http://www.pted.org/htms/dilv1.htm
(124 words)
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| | Untitled Document |
| | Blood leaves the heart and is pumped to the body (except the lungs) through the | | | Blood returns to the heart from the body through the | | | Back flow of blood from the aorta into the left ventricle is prevented by the |
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http://www.jburroughs.org/science/resources/heart/testanswers.html
(238 words)
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| | Double Inlet Left Ventricle |
| | All medical information needs to be carefully reviewed with your health care provider. | | | DISCLAIMER: NOAH is an information guide only and cannot answer personal health-related or research questions. | | | Double Inlet Left Ventricle University of Virginia Medical Center |
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http://www.noah-health.org/en/blood/congenital/types/doubleinlet.html
(123 words)
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| | Glossary |
| | When the right ventricle relaxes the valve closes preventing the blood from coming back into the right ventricle. | | | The cardiac valve that separates the right atrium from the right ventricle. | | | When the left ventricle contracts, the mitral valve closes and prevents the blood from returning to the left atrium. |
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http://alcor.concordia.ca/~dc_stron/h2h/gloss.htm
(439 words)
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| | Left Ventricle 3D Reconstruction |
| | This parameter set is an important attribute necessary for determining the right therapeutic procedure used in patients with cardiac diseases. | | | This problem has been solved by other groups by working under the assumption of a parallel projection geometry and by decomposing the object into several 2D slices which are reconstructed one at a time. | | | This is an ill-posed inverse problem that can have many possible solutions. |
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http://www.ing.ula.ve/~rmedina/page6.html
(414 words)
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| | How the heart works, an animated tutorial |
| | Diastole occurs when the heart is relaxed and not contracting. | | | the aortic valve, between the left ventricle and the aorta. | | | Blood flows and is pumped from the right atrium across the open tricuspid valve into the right ventricle. |
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http://your-doctor.com/healthinfocenter/medical-conditions/cardiovascular/heartpump-tutorial.html
(557 words)
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| | HLHS |
| | HLHS is not a survivable lesion without major open heart surgery. | | | Hypoplastic left heart syndrome, or HLHS for short, means that the whole left side of the heart did not develop normally. | | | Therefore, the mitral and aortic valves are tiny or absent, as are the the left ventricle and the first part of the aorta. |
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http://www.pediheart.org/parents/defects/HLHS.htm
(329 words)
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| | Left Ventricular Assist Device |
| | It helps maintain the pumping ability of a heart that can't effectively work on its own. | | | A left ventricular assist device (LVAD) is a battery-operated, mechanical pump-type device that's surgically implanted. | | | The left ventricle is the large, muscular chamber of the heart that pumps blood out to the body. |
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http://www.americanheart.org/presenter.jhtml?identifier=4599
(266 words)
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| | Congenital DORV |
| | AMC takes no responsibility for content provided at external link sites. | | | The management of the patient will depend on the degree of cyanosis and the development of congestive heart failure. | | | This is accomplished by using a patch to baffle blood flow from the VSD to the aortic valve and the aorta. |
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http://heart.amc.edu/dorv.htm
(458 words)
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| | Left and right - definition of Left and right in Encyclopedia |
| | "Left" for one person is different from "left" for another. | | | However, it is seen at the position corresponding to that of the right hand of a real person opposite to him or her. | | | Strictly, this is not true: the image of one's left hand is on his or her left-hand side. |
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http://encyclopedia.laborlawtalk.com/Left_and_right
(352 words)
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| | Left ventricle wall thickness :: The Doctors Lounge(TM) |
| | Left ventricular hypertrophy, irrespective of any other disease that patients have, increases the risk of having heart attacks, strokes and renal failure (reflecting the fact blood pressure is poorly controlled). | | | There are certain anti-hypertensive medications that cause regression more than other medications, you can discuss the choice of medications with your doctor and i am sure he will give the best advice. | | | You have a very strong positive family histopry for coronary disease and you have a high ldl and your blood pressure is not under good control, all of these, in addition to smoking as well. |
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http://www.thedoctorslounge.net/forums/viewtopic.php?t=4041
(660 words)
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| | eMJA: Transient apical ballooning of the left ventricle |
| | Normal end-systolic left ventriculogram (from a different patient). | | | Apical ballooning of the left ventricle: first series in white patients. | | | 2-4 The in-hospital mortality rate is less than 1%,2 and there is usually complete functional recovery of the left ventricle within 2 weeks. |
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http://www.mja.com.au/public/issues/181_10_151104/mar10532_fm.html
(534 words)
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| | About the Heart |
| | The mitral valve is responsible for controlling blood flow between the left ventricle and left atrium. | | | The left atrium and ventricle are connected to each other by an atrio-ventricular orifice which is protected by the mitral valve (two-fold valve). | | | The aorta, the body's largest artery, is attached to the left ventricle to pass fresh, oxygenated blood from the heart into the rest of the body. |
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http://www.bethisraelny.org/services/cardiology/left_ventricle.html
(121 words)
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| | Children's Heart Institute How the Heart Works: Blood Flow Diagram |
| | The Left Ventricle fills with blood which forces the Mitral Valve to close and initiates the muscle of the Left Ventricle to contract, open the Aortic Valve, and squeeze the blood through the Aortic Valve and on to the body. | | | The Right Ventricle fills with blood which forces the Tricuspid Valve to close and initiates the muscle of the Right Ventricle to contract, open the Pulmonic Valve and squeeze the blood through the Pulmonic Valve and on to the lungs. | | | This pressure is enough to rush it to the different parts of the body at high velocity and give its oxygen and nutrients to the body tissues. |
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http://www.childrenheartinstitute.org/educate/heartwrk/bloodflw.htm
(289 words)
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| | Atlas of Pathology |
| | This is a saggittal view of the left ventricle, the left atrium, and the aortic outflow tract with its three cusps. | | | Such a heart is referred to as decompensated. | | | This is the anatomical basis of congestive heart failure and has several etiologies. |
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http://www.med.uiuc.edu/PathAtlasf/Atlas100.html
(74 words)
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| | Hypoplastic Left Heart Syndrome |
| | Hypoplastic left heart syndrome is characterized by the underdevelopment (hypoplasia) of the chambers on the left side of the heart (i.e., left atrium and ventricle). | | | Hypoplastic left heart syndrome is a term used to describe a group of closely related rare heart defects that are present at birth (congenital). | | | In addition, the mitral valve, which connects these chambers to each other, is usually abnormally narrow (stenosis) or closed (atresia) and the aortic valve, which connects the heart to the major vessels that lead from the lungs (ascending aorta), may also be narrow or closed. |
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http://my.webmd.com/hw/health_guide_atoz/nord178.asp
(555 words)
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| | Left Ventricle to Right Atrial Shunt |
| | The left atrium may also be enlarged as in other graphics/cases of VSD. | | | This may occur above or below the tricuspid valve. | | | Left Ventricle to Right Atrium shunt results from a "membranous" VSD which connects the left ventricular and right atrial chambers. |
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http://www.med.umn.edu/radiology/cvrad/chd/lvra.html
(83 words)
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| | Echocardiographic Study of Patients with Double Outlet Left Ventricle |
| | Echocardiographic Study of Patients with Double Outlet Left Ventricle | | | We sought to retrospectively analyze echocardiographic data of patients with DOLV at a tertiary cardiac referral center. | | | Double outlet left ventricle (DOLV) is a rare congenital anomaly which constitutes 0.005% of all congenital heart disease. |
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http://indianheartjournal.com/Sept-Oct2004/html/439_echocardiographic_study.htm
(236 words)
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