• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Print - Circulation
Print - Circulation

... this rotation takes place lies where the interventricular canal opens into the common chamber distal to the right ventricle, the bulbus cordis, as can be seen fronm figure 1. Doerr7 has described other torsional coniponents of this rotation in greater detail. All shape changes in the heart must be d ...
Heart Murmurs in Dogs - Kingsbrook Animal Hospital
Heart Murmurs in Dogs - Kingsbrook Animal Hospital

... If your pet is still a young puppy and the murmur is of low intensity, your veterinarian may recommend a re-examination in a few weeks time to track whether the murmur has decreased in intensity or disappeared, indicating that it was likely an innocent murmur. Similarly, if your adult dog appears to ...
4. and 5. Cardiac Cycle I _ II - 2016
4. and 5. Cardiac Cycle I _ II - 2016

... ventricular pressure immediately exceeds atrial pressure → The AV valve is closed → 1st heart sound is heard. The aortic valve is still closed. Ventricular pressure must continue to increase before it exceeds aortic pressure to open the aortic valve. Because no blood enters or leaves the ventricle, ...
TRICUSPID ATRESIA
TRICUSPID ATRESIA

... • The left atrium may be enlarged, especially when the pulmonary blood flow is increased. • The mitral valve is morphologically normal; it is rarely incompetent and has a large orifice. • The left ventricle is enlarged and hypertrophied but usually morphologically normal ...
Ebstein`s Anomaly of the Tricuspid Valve
Ebstein`s Anomaly of the Tricuspid Valve

... Shapiro12 in their reviews in 1937 stated that "it would appear impossible to make the diagnosis during life." We have recently studied three patients with Ebstein's malformation of the heart and have re-examined the case previously reported by Taussig.'9 Although the correct diagnosis was not made ...
Cardiologic examinations in ferrets with and - diss.fu
Cardiologic examinations in ferrets with and - diss.fu

... the vagus nerve and sympathetic trunk lie close and bound together in the same fascial sheath in the neck. The vagosympathetic trunk travels in close proximity to the common carotid artery, lying slightly dorsolateral to it. On the right side, the right vagus nerve is separated from the sympathetic ...
Investigation in the Simulation of the Human`s Heart Structure
Investigation in the Simulation of the Human`s Heart Structure

... techniques of computations such as numerical methods have been presented to solve the vast majority of differential equations which is very difficult to find analytical solutions for them. So, after study in some courses about the numerical methods within the mechanical field, we have tried to open ...
Managing Asymptomatic Patients With Chronic Mitral Regurgitation*
Managing Asymptomatic Patients With Chronic Mitral Regurgitation*

... Mitral valve replacement with a mechanical or tissue prosthesis can provide remarkable clinical benefits in selected patients with mitral valve disease. Unfortu¬ nately, the early benefits of tissue valves tend to be neutralized by a gradual increase in the need for reoperation after 7 to 10 years; ...
Full paper
Full paper

... Objectives: Atrial fibrillation is the most common form of arrhythmia in mitral valve disease. Radiofrequency ablation is most commonly used for atrial fibrillation ablation during mitral valve surgery. Methods: This prospective study evaluated the midterm outcomes of intraoperative radiofrequency a ...
First-in-man Experience of a Novel Transcatheter
First-in-man Experience of a Novel Transcatheter

... Illustration). The device consists of a spacer and a rail which is anchored at the right ventricular apex. The spacer is a foam filled polymer balloon that passively expands via holes in the spacer shaft. Two radiopaque markers help to initially position the spacer using fluoroscopy. There are 2 spa ...
Hemodynamics after Surgical Repair with Right Ventricle to
Hemodynamics after Surgical Repair with Right Ventricle to

... glutaraldehyde-preserved dacron conduit with a porcine aortic valve (as provided by Hancock Laboratories) was used. All conduits were inserted using the same surgical technique. A portion of the right ventricular free wall was excised and the bevelled end of the proximal end of the conduit was anast ...
GREEN Form - AHP Diet Drug Settlement
GREEN Form - AHP Diet Drug Settlement

... under the Diet Drug Settlement Agreement with American Home Products Corporation. These Benefits are described generally in the official notices authorized by the Court and in the “Settlement Matrix Compensation Benefits Guide for Physicians, Attorneys and Class Members,” which is an Appendix to thi ...
Management of Valvular Heart Disease
Management of Valvular Heart Disease

... Management after Valve Replacement • Complete baseline assessment 6 to 12 weeks after surgery (clinical assessment, chest X-ray, ECG, TTE, blood testing) • Antithrombotic therapy ...
The Apical First Heart Sound as an Aid in the Diagnosis
The Apical First Heart Sound as an Aid in the Diagnosis

... lescribed by Potai.n'111 in the nineteenth century. He advaneed nio pLysiologic explanation for this finding, althouitgh he believed that the first heart sounlld was produced by closure of the atrioventrieular valves. In 1925, Katz" demnonistrated experimeintally in dogs that there is slight asynchl ...
Tetralogy of Fallot with Absent Pulmonary Valve
Tetralogy of Fallot with Absent Pulmonary Valve

...  Pulmonology follow up indicated for pulmonary complications  Airway compression at the tracheal and bronchial levels o May require tracheostomy and long term mechanical ventilation o Key role in postoperative morbidity and mortality o Persistent distal airway compression increases mortality risk ...
Children with Heart Conditions
Children with Heart Conditions

... of pregnancy the heart is fully formed. It changes little in its basic structure until birth when the circulation of the blood alters as the lungs start to function. Major abnormalities in development of the heart must therefore occur early in pregnancy. Parents will naturally worry about things whi ...
Pulmonary Valve
Pulmonary Valve

...  Valve characteristics o Dome shaped pulmonary valve o Fused leaflets protrude from their attachment into the pulmonary artery (PA) as a conical, windsock-like structure  Valve orifice o Size varies from a pinhole to several millimeters o Most usually central but can be eccentric  Pulmonary valve ...
Ministry of Public Health Republic of Uzbekistan Center for
Ministry of Public Health Republic of Uzbekistan Center for

... the lung capillary net overflow with blood. High pressure in the LA (up to 80 mm Hg and above) leads to compensatory hypertrophy, and then the dilation of the right ventricle (RV), the diastolic pressure increases, this would lead to the right ventricular failure and the relatively insufficiency of ...
Print - Circulation
Print - Circulation

... either angiographically, echocardiographically or under direct observation and usually having intermediately coarse trabeculation. Van Praagh et al. 17 considered some of these hearts without outlet chambers to be single ventricles of left ventricular type, but the three hearts in this category that ...
Cross-sectional Echocardiographic Diagnosis
Cross-sectional Echocardiographic Diagnosis

... either angiographically, echocardiographically or under direct observation and usually having intermediately coarse trabeculation. Van Praagh et al. 17 considered some of these hearts without outlet chambers to be single ventricles of left ventricular type, but the three hearts in this category that ...
Is Mitral Valve Prolapse Due to Cardiac
Is Mitral Valve Prolapse Due to Cardiac

... Methods: We performed EBCT in 66 patients with echocardiographically proven MVP and no clinical pectus excavatum (group A; 80% were women; mean age, 48 ⴞ 12 years) and in 96 control patients without MVP by echocardiography (group B; 72% were women; mean age, 49 ⴞ 10 years). EBCT alone was also perfo ...
iatrogenic left main coronary artery stenosis after aortic valve
iatrogenic left main coronary artery stenosis after aortic valve

... aortic valve replacement is a potentially lifethreatening complication owing to its proximal location and rapid evolution. Prompt diagnosis and treatment are essential for the patient’s survival. The usual clinical picture includes severe angina, ventricular arrhythmias, congestive heart failure and ...
Evaluation of Diastolic Dysfunction Using Cardiac MRI
Evaluation of Diastolic Dysfunction Using Cardiac MRI

... •  Both DD and diastolic heart failure are very common, particularly in the elderly population [2]. –  The prevalence of asymptomatic DD in individuals > 45 years is approximately 25-30% [3]. –  Up to 40% of heart failure patients have DD which is a cause of significant morbidity in this group [4]. ...
October - Congenital Cardiology Today
October - Congenital Cardiology Today

... address should be included. • Optionally, a picture of the author(s) may be submitted. • No abstract should be submitted. • The main text of the article should be written in informal style using correct English. The final manuscript may be between 400-4,000 words, and contain pictures, graphs, chart ...
Chapter 9 Circulation: The Cardiovascular and Lymphatic Systems
Chapter 9 Circulation: The Cardiovascular and Lymphatic Systems

... when taking blood pressure. Cardiovascular disorders named for people include the tetralogy of Fallot, a combination of four congenital heart defects; Raynaud disease of small vessels; and the cardiac arrhythmia known as Wolff–Parkinson– White syndrome. In treatment, Doppler echocardiography is name ...
< 1 ... 17 18 19 20 21 22 23 24 25 ... 145 >

Artificial heart valve



An artificial heart valve is a device implanted in the heart of a patient with valvular heart disease. When one of the four heart valves malfunctions, the medical choice may be to replace the natural valve with an artificial valve. This requires open-heart surgery.Valves are integral to the normal physiological functioning of the human heart. Natural heart valves are evolved to forms that perform the functional requirement of inducing unidirectional blood flow through the valve structure from one chamber of the heart to another. Natural heart valves become dysfunctional for a variety of pathological causes. Some pathologies may require complete surgical replacement of the natural heart valve with a heart valve prosthesis.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report