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| | Guiding introducer system for use in the right atrium - Patent 5840027 |
 | | Mere introduction of the catheter into the right atrium is not sufficient to effectively and efficiently perform these medical procedures, especially the mapping or ablation of the anomalous conduction pathways. | | | The second technique, which approaches the pathway from the atrial insertion site, is to enter the right atrium from the inferior or superior vena cava, and attempt to locate the atrial insertion site of the accessory pathway around the tricuspid valve annulus. | | | When the anomalous conduction pathway is located between the left atrium and the left ventricle, there are two approaches to positioning the catheter near the pathway for the appropriate medical procedure. |
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http://www.freepatentsonline.com/5840027.html
(4926 words)
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| | Heart - Dissector Answers |
| | The right and left sides of the heart are very similar in terms of structural components. | | | In the right ventricle, define papillary muscles, chordae tendinae, and tricuspid valve cusps. | | | The systemic resistance to flow, which must be overcome by the left ventricle, is much higher than the pulmonary resistance to flow. |
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http://www.med.umich.edu/lrc/coursepages/M1/anatomy/html/cardiovascular_system/heart_ans.html
(1749 words)
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| | [No title] |
| | This leaves an interventricular foramen The interventricular foramen Tissue from the right side of the fused endocardial cushions proliferates toward the muscular interventricular septum. | | | Septum primum Inferiorly (caudally), towards the fused endocardial cushions Separation of the atrium into right and left atria. | | | The bulbar and truncal ridges (that are continuous with each other) grow from opposite walls and fuse with each other in the middle. |
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http://www.ecu.edu/medicalstudents/classof2006/m1fallexam3/cardioembryoanswers.doc
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| | large left atrial myxoma removed via right atrium |
| | They are the left atrial approach, the biatrial approach and the right atrial approach. | | | A 22-year-old female patient presented with complaints of chest pain and giddiness for one year, which had increased in severity and frequency since the previous 5-6 days. | | | The patient was taken up for surgery on an emergency basis. |
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http://www.indegene.com/Car/ClinRound/indCarCase1.html
(605 words)
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| | Congenitally Unguarded Tricuspid Valve Orifice with a Giant Right Atrium and a Massive Clot in an Asymptomatic ... |
| | The natural outcome, with or without medical treatment, is not too dismal and one such patient survived till the age of 53 years. | | | This report describes an asymptomatic adult who, on echocardiographic examination ordered in view of an abnormal 12-lead surface electrocardiogram and plain chest X-ray, was found to have an unguarded tricuspid valve orifice with a giant right atrium (12×10 cm), intense spontaneous echo contrast and a large right atrial clot. | | | Pulmonary atresia with an intact interventricular septum may be associated with a variable degree of tricuspid valve dysplasia but it needs to be differentiated from Ebstein’s malformation or an unguarded tricuspid orifice in which the right ventricle is dilated. |
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http://indianheartjournal.com/JulyAugust2001/congenitally/congenitally_unguarded_tricuspid.htm
(1225 words)
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| | Heart Structure |
| | The Right Atrium also receives blood back from the heart muscle itself. | | | The right side of the heart receives blood low in oxygen. | | | The Heart Diagram above and the information that follows will give a better understanding of the heart structure and how the blood circulates through the heart. |
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http://web.buddyproject.org/web019/web019/heart.html
(693 words)
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| | About the Heart |
| | From the right ventricle, the pulmonary artery is the pathway for deoxygenated blood to pass into the lungs. | | | located just below the right atrium, receives blood flow to be passed to the lungs. | | | This valve also controls blood flow between these two areas. |
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http://www.bethisraelny.org/services/cardiology/right_ventricle.html
(128 words)
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| | Figures |
| | Long-term rhythm control, survival from all-cause mortality, and need for cardioversion (CV) therapy in 113 patients with drug refractory atrial fibrillation. | | | (Reproduced with permission from Madan N, Saksena S: Long-term rhythm control of drug refractory atrial fibrillation with "hybrid therapy" incorporating dual site right atrial pacing, antiarrhythmic drugs, and right atrial ablation. | | | Right atrial map from the same patient as in Figure 2 shows a right atrial flutter with macroreentrant activation. |
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http://www.medscape.com/content/2004/00/47/50/475085/475085_fig.html
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| | Venoatrial |
| | Venoatrial situs ambiguus designates anatomic uncertainty or an indeterminate type, in which the liver shadow is bilaterally symmetric, the stomach bubble can be left-sided, right-sided or midline and changes from chest film to chest film. | | | Situs solitus is present when, on a plain chest film, the liver shadow is right-sided and the stomach bubble is left-sided. | | | Right or left isomerism are helpful mnemonics that assist one to remember the associated lesions, however, there is considerable variation within each syndrome, and features of one syndrome can be found in the other. |
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http://www.pediheart.org/practitioners/anatomy/venoatrial.htm
(483 words)
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| | Glossary |
| | When the right ventricle relaxes the valve closes preventing the blood from coming back into the right ventricle. | | | It may help to identify a particular cardiac problem by telling us about extra work imposed on the heart. | | | The cardiac valve that separates the right atrium from the right ventricle. |
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http://alcor.concordia.ca/~dc_stron/h2h/gloss.htm
(439 words)
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| | Lecture 14. The Human Heart |
| | Most students have learned the basic structure of the heart before they take an Anatomy course. | | | There is no side to side movement of blood within the heart. | | | Yet, the cardiac muscle is a syncytium; actually the heart consists of two syncytia. |
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http://ext.sac.edu/faculty_staff/mansfield_patricia/14heart.html
(730 words)
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| | 2D Echo |
| | This is a view of the heart taken from the right side showing the edges of the mitral valve leaflets in cross-section. | | | Video of the mitral valve from another dog with the same disease | | | The left atrium is markedly enlarged in this right parasternal cross-sectional view of the base of the heart. |
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http://www.vmth.ucdavis.edu/Cardio/cases/case9/2decho.htm
(270 words)
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| | populationalbiology_lab1 |
| | There are conditions, however, that lead to right ventricular hypertrophy, such as high altitude conditions during growth and development and a few diseases associated with the respiratory system. | | | tri) which are attached by tendinous cords, like parachute strings, to the three (ant, post, med) papillary muscles from the trabeculae carnaiae of the right atrium | | | a) The tricuspid valve is located between the right atrium and the right ventricle. |
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http://www.ic.arizona.edu/~bio182/cardiacanatomy_lab8.htm
(1256 words)
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| | Echocardiography |
| | Treatment (anticoagulant therapy vs. surgery) of atrial septal aneurysm identified in stroke patients can be determined only by long-term follow-up studies. | | | Four patients in Group I had an atrial septal defect with additional left to right flow. | | | Atrial septal aneurysm was significantly more common in patients with stroke (20 [15%] of 133 vs. 12 [4%] of 277) (p less than 0.05); right to left shunting at the atrial level was demonstrated in 70% of patients in Group I and 75% of patients in Group II by saline contrast echocardiography. |
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http://www2.umdnj.edu/~shindler/iasanysm.html
(1760 words)
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| | Tricuspid valve insufficiency |
| | This condition is also called tricuspid valve regurgitation and tricuspid incompetence. | | | Please consult your health care provider if you have any questions or concerns. | | | As the conditions worsens, a person experiences pain in the upper right part of the abdomen, caused by a congested and enlarged liver. |
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http://www.rwjhamilton.org/Atoz/ency/tricuspid_valve_insufficiency.asp
(609 words)
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| | Abnormalities Related to Ebstein's Anomaly, Mayo Clinic |
| | Under normal circumstances, the three leaflets or "flaps" of the valve allow only forward flow of blood through the right side of the heart. | | | This may even require surgery early in life. | | | Atrial septal defect (present in 50 percent of patients) |
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http://www.mayoclinic.org/ebsteins-anomaly/abnormalities.html
(551 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 | | | Blood flows from the right atrium into the |
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http://www.jburroughs.org/science/resources/heart/testanswers.html
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| | Assignment 2 |
| | The right side of the heart receives de-oxygenated blood from the body, then pumps it out to the lungs to be "refueled" with oxygen. | | | The Right Atrium, therefore, is a chamber of the heart that receives blood from the body, and then passes it down to the right ventricle so it can be pumped out to the lungs. | | | Atriums are receiving chambers, and they serve to receive blood and then pass it down to the ventricles, which in turn pump the blood out of the heart. |
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http://www3.telus.net/onlineportfolio/3205folder/assign2/pages/ratrium.html
(105 words)
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| | ► Tricuspid atresia |
| | In a normal body, unoxygenated blood flows into the right atrium, then through the tricuspid valve to the right ventricle and on to the lungs. | | | Tricuspid atresia is one of the least common forms of congenital heart disease. | | | Tricuspid atresia is a type of congenital heart disease in which blood is unable to flow from the right atrium to the right ventricle because the tricuspid valve is missing or abnormally developed. |
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http://www.umm.edu/ency/article/001110.htm
(375 words)
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| | Texas Heart Institute Journal - Echocardiographic Features of Chiari's Network |
| | Variations and anomalies of the venous valves of the right atrium of the human heart. | | | The prostaglandin was discontinued, and the infant underwent a modified right Blalock-Taussig shunt on day of life 5. | | | In normal development, the right valve regresses between gestational weeks 9 and 15, its cephalic portion remaining as the crista terminalis and its caudal portion dividing to form the eustachian and thebesian valves. |
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http://www.bcm.edu/tmc/thi/mcmahon.html
(512 words)
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| | Pediatric Oncall- ATRIAL SEPTAL DEFECT (ASD) |
| | On chronic high blood flow, the blood vessels in the lungs become hard and thick leading to high pressure in the pulmonary vessels. | | | Sometimes clots may enter the right atrium and pass through the ASD into left atrium which then passes into the aorta and to the brain leading to a stroke – phenomenon known as paradoxical embolization. | | | Subsequently the heart may also fail as the right ventricle may become weak due to constant hard work. |
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http://www.pediatriconcall.com/forpatients/CommonChild/atrial.asp
(407 words)
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| | Venous |
| | Under these circumstances, the coronary sinus is enlarged, and the lesion is of no clinical importance. | | | These features have contributed to the general rule (which has many exceptions) that patients with right atrial isomerism tend to have bilateral "right-sidedness", whereas those with left atrial isomerism tend to have bilateral "left-sidedness". | | | A persistent left superior vena cava is of no clinical significance since the systemic venous blood continues to return to the right atrium, but may be troublesome in keeping blood out of the field during cardiopulmonary bypass. |
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http://www.pediheart.org/practitioners/defects/venous.htm
(2042 words)
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| | Atrial Septal Defect, What Is, NHLBI DCI |
| | Over time, the extra blood flow to the right side of the heart and the lungs can cause: | | | When this occurs, a fast heartbeat can develop with symptoms such as dizziness, fainting, or chest discomfort. | | | Over time, the heart may become overworked, and function may become impaired. |
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http://www.nhlbi.nih.gov/health/dci/Diseases/asd/asd_what.html
(767 words)
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| | The right atrium as an anatomic set-up for re-entry: electrophysiology goes back to anatomy -- Cosío 88 (4): 325 ... |
| | The right atrium as an anatomic set-up for re-entry: electrophysiology goes back to anatomy -- Cosío 88 (4): 325 -- Heart | | | Transverse conduction capabilities of the crista terminalis in patients with atrial flutter and atrial fibrillation. | | | The functional role of structural complexities in the propagation of depolarization in the atrium of the dog: cardiac conduction disturbances due to discontinuities of effective atrial resistivity. |
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http://heart.bmjjournals.com/cgi/content/full/88/4/325
(1532 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. | | | 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. | | | 25.13) is less frequent clinically than right- sided disease (10% versus 47%). |
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http://tmcr.usuhs.mil/tmcr/chapter25/clinical3.htm
(429 words)
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| | Heart Anatomy Glossary Printout - EnchantedLearning.com |
| | When the ventricle relaxes, the valves close, preventing the back-flow of blood from the pulmonary artery to the right atrium. | | | The heart is a fist-sized, muscular organ that pumps blood through the body. | | | - a large vein that carries oxygen-poor blood to the right atrium from the upper parts of the body. |
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http://www.enchantedlearning.com/subjects/anatomy/heart/labelinterior/glossary.shtml
(479 words)
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| | Valvular Heart Disease |
| | The other heart valves to be described later have similar functions i.e. | | | There is a valve between the right atrium and the ventricle, called tricuspid valve. | | | This valve allows emptying of blood from the right atrium into the right ventricle and then closes to prevent the return of blood back into the right atrium. |
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http://www.kfshrc.edu.sa/cardiovascular/html/valvular_heart_disease.html
(1074 words)
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| | BioInteractive's Animation Console |
| | Chordae tendineae, attach the tricuspid valve to the papillary muscles that grow out of the wall of the ventricle. | | | The aortic valve in the left heart is one of two semilunar valves; the other one is the pulmonary valve located in the right heart. | | | At the other end of the valve, thin inelastic tendons (called chordae tendineae) attach the valve to the fingerlike papillary muscles of the ventricle. |
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http://www.hhmi.org/biointeractive/animations/heart/heart_print.htm
(1060 words)
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| | MedlinePlus Medical Encyclopedia: Atrial myxoma - right |
| | Symptoms may occur at any time, although they typically accompany changes in body position. | | | Right atrial myxomas are sometimes associated with tricuspid stenosis and atrial fibrillation. | | | Some of the symptoms and signs in right atrial myxoma may be caused by tricuspid stenosis (an obstruction of the valve that separates the right atrium and the right ventricle). |
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http://www.nlm.nih.gov/medlineplus/ency/article/000197.htm
(530 words)
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| | Anatomy Tables - Heart |
| | ridge of cardiac muscle separating smooth sinus venarum posteriorly from rough wall of primitive atrium anterioly | | | right coronary near the point where it becomes the posterior interventricular a. | | | part of conduction system of heart; located in wall of right atrium above ostium of coronary sinus and septal cusp of tricuspid valve |
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http://www.med.umich.edu/lrc/coursepages/M1/anatomy/html/thorax/heart_tables.html
(1689 words)
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| | How the heart works, an animated tutorial |
| | Blood flow occurs only when there's a difference in pressure across the valves that causes them to open. | | | Blood flows and is pumped from the right atrium across the open tricuspid valve into the right ventricle. | | | the tricuspid valve, located between the right atrium and right ventricle; 2. |
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http://your-doctor.com/healthinfocenter/medical-conditions/cardiovascular/heartpump-tutorial.html
(557 words)
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| | Top normal inferior vena cava, right atrium, pulmonary artery pressure |
| | You have been experiencing SOB, back pain, and pleuritic pain. | | | No one seems to be able to relate any of my symptoms or find a cause for the enlargement (tests recommended on my last posting have not been conducted). | | | I think it would be a good idea for you to see a cardiologist who can try to put everything together for you in a unified manner. |
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http://www.medhelp.org/forums/cardio/messages/33901.html
(685 words)
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| | right atrium |
| | Molecular forms of atrial natriuretic peptide in the atrium of patients with cardiovascular disease. |
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http://www.arclab.org/node_pages/986.html
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| | ipedia.com: Foramen ovale Article |
| | Two structures in the human body are called foramen ovale, meaning circular hole. | | | In the foetal heart the foramen ovale allows blood to enter the left atrium of the heart from the right atrium. |
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http://www.ipedia.com/foramen_ovale.html
(176 words)
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| | HeartFlight - Explore Right Atrium |
| | A still image view of 'Explore Right Atrium'. | | | The 'Explore Right Atrium' option of the flythrough animation in HeartFlight ! | | | The user can pan around the right atrium using their mouse or trackball. |
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http://www.sci.sdsu.edu/heartflight/flythru/exprtatrium.html
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