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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 ...
Gross anatomy of the heart in Ostrich (Struthio camelus)
Gross anatomy of the heart in Ostrich (Struthio camelus)

... valve composed of three semicircular cusps. The wall of the trunk formed a pouch opposite to each cusp so called pulmonary sinuses (Fig. 11). The pulmonary trunk divided into the right and left pulmonary arteries (Fig. 5). The left atrium forms the caudal part of the base of the heart and lies dorsa ...
Transcatheter therapies for mitral regurgitation CLINICAL GUIDELINES
Transcatheter therapies for mitral regurgitation CLINICAL GUIDELINES

... of the spectrum, symptomatic patients with functional MR that is due either to adverse LV remodeling after myocardial infarction or to a nonischemic cardiomyopathic process may benefit from surgical treatment to reduce or eliminate the excess LV volume load. A down-sized annuloplasty repair or chord ...
NURS1004 Week 10 Lecture the Heart Part II Prepared by Didy
NURS1004 Week 10 Lecture the Heart Part II Prepared by Didy

... 7. Ventricular diastole • Ventricular pressure is higher than atrial pressure • All heart valves are closed • Ventricles relax (isovolumetric relaxation) 8. Atrial pressure is higher than ventricular pressure ...
12-Development_of_Heart
12-Development_of_Heart

... in one or both septa 2.Endocardial cushions defects with ostium primum: septum primum does not fuse with cushions resulting in a patent forament primum 3.Sinus venosus defect: incomplete absorption of sinus venosus 4.Common atrium: failure of both septa to develop ...
20-1 HISTOLOGY Cardiac Muscle FIGURE 20.12 1. Comparison to
20-1 HISTOLOGY Cardiac Muscle FIGURE 20.12 1. Comparison to

... B. Cardiac muscle has a T tubule system and sarcoplasmic reticulum similar to skeletal muscle. A T tubule next to the sarcoplasmic reticulum is called a diad (recall the triad of skeletal muscle). The excitation-contraction mechanism in cardiac muscle is similar to that in skeletal muscle, but it is ...
Patients - St. Jude Medical
Patients - St. Jude Medical

... Our RESPECT trial is different than NMT’s CLOSURE I trial with respect to trial design, patient selection, and reliability of device performance. ...
the mitral valve in endocardial cushion defects - Heart
the mitral valve in endocardial cushion defects - Heart

... the septum) may render the cusp more mobile, but may also interfere with its stability and make it impossible to overcome the incompetence. Add the fact that the cleft is more often a wedgeshaped deficiency of tissue (Fig. 5), and the surgical difficulties can be appreciated. Success in correcting t ...
CARCINOID HEART DISEASE Atrial Myxoma
CARCINOID HEART DISEASE Atrial Myxoma

... On physical examination, his heart rate was 125/min with irregular rhythm. There was grade 3 holosystolic murmur at lower left sternal border and grade II systolic ejection murmur at upper left sternal border. There was severe pitting edema in his lower legs and arms, hepatomegaly and tense Ascites ...
The Diastolic Murmur - STA HealthCare Communications
The Diastolic Murmur - STA HealthCare Communications

... guess? It would certainly seem so, but considering that rheumatic valve pathology was the leading cause of heart disease in his day, and that atrial fibrillation (AF), also known as pulsus mitrale, was commonly found in those with significant mitral stenosis, it was more likely an educated guess. I ...
health conditions
health conditions

... left ventricle) or the aortic valve (allows blood to exit the left ventricle). These heart valves generally develop one of two problems: • Opening—the valve may not fully open. This is associated with stenosis, which is the thickening and narrowing of the valve. Stenosis slows blood flow through the ...
Global Strain in Severe Aortic Valve Stenosis
Global Strain in Severe Aortic Valve Stenosis

... Horten, Norway) speckle tracking software 2-D. GLS was determined as the magnitude of strain at the aortic valve closure, and systolic strain rate (SRS) was determined as the maximal negative SR value during the ejection phase. Both parameters were assessed in all 3 apical planes, and the mean value ...
left ventricular cardiomyopathy in mitral valve prolapse: fact or fiction?
left ventricular cardiomyopathy in mitral valve prolapse: fact or fiction?

... connective tissue disorder, have an increased incidence of impaired LV function independent of the degree of MR. Additionally, right ventricular dysfunction can occur in MVP. This has been described to occur in 10% of 68 patients with MVP without significant valvular regurgitation.50 In EDS, charact ...
Adult Echocardiography Protocol Patient Position For parasternal
Adult Echocardiography Protocol Patient Position For parasternal

... Acquire cine loop of 2D image of left ventricle at level of the papillary muscles Papillary muscles Apex of LV Acquire cine loop of 2D image of left ventricle apex ...
Doubly Committed Ventricular Septal Defect: Single
Doubly Committed Ventricular Septal Defect: Single

... AR. Two patients required aortic valve replacement during follow-up (15 and 32 years after VSD closure). Two patients (11%) had AR without AVP before dcVSD closure. One of these patients was diagnosed preoperatively with a ruptured sinus of Valsalva. The other patient had a bicuspid aortic valve wit ...
Transcatheter aortic valve implantation: emerging role in poor left
Transcatheter aortic valve implantation: emerging role in poor left

... paravalvular AR is associated with decreased survival.14 Conventional AVR in LGLEF severe aortic stenosis, although a high risk procedure, has been shown to improve long term survival in younger patients.6, 9 The results of TAVI, however, do not extend beyond 5-years. Clearly, the long-term durabili ...
2014 - Dr. Dhiren Shah
2014 - Dr. Dhiren Shah

... Echocardiography reveals an ejection fraction of 25%, severe left ventricular hypertrophy, and global hypokinesis. The aortic valve leaflets appear heavily calcified, with restricted motion. The peak and mean gradients across the aortic valve are 40 and 28 mm Hg, and the valve area is 0.8 cm2. Righ ...
Outcomes following aortic valve replacement for
Outcomes following aortic valve replacement for

... evaluate the isolated effect of AVR in those without concomitant CAD. There is no known published data available on survival, changes in ventricular function and long-term follow up from any South African institute to date. The purpose of this ...
Heart Murmurs in Pediatric Patients: When Do You Refer?
Heart Murmurs in Pediatric Patients: When Do You Refer?

... atrial septai defect, the S, always sounds as if the patient has taken a deep breath. This means that the volume of blood in the right ventricle Is increased and it takes longer for the ventricle to eject its contents, thus leading to a fixed, widely split S2. Murmurs heard in patients with atrial s ...
Staged approach for the management of atrial septal defect in the
Staged approach for the management of atrial septal defect in the

... showed a marked increase in left atrial pressure. Restrictive physiology of the LV is more common in elderly patients than in children. In the study by Ewert et al (6), a patient who underwent closure with an ASD device developed pulmonary edema that required mechanical ventilation. The authors also ...
Lesson Plans
Lesson Plans

...  Coronary artery bypass graft surgery (CABG)—a procedure in which section of vein or artery from another part of the body (a graft) is used to bypass a blockage in a coronary artery.  Cardiomyopathy—the progressive impairment of the structure and function of the myocardium.  Dilated cardiomyopath ...
to know more about my own HEART story - Heart
to know more about my own HEART story - Heart

... developed science on an average 91% of the deaths per hour are due to heart attacks. ...
Congenital Aortic Stenosis in Children
Congenital Aortic Stenosis in Children

... If the patients have an established HLHS circulation with an underdeveloped LV, all the treatment options are directed to the future completion of the Fontan circulation, a final goal for patients with single ventricular circulation. However, if the LV size and components are to be sufficient to gen ...
Stroke work - WordPress.com
Stroke work - WordPress.com

... pressure (LVP) is plotted against left ventricular (LV) volume at multiple time points during a complete cardiac cycle. ...
isolated hypoplasia of the right ventricle and tricuspid valve in siblings
isolated hypoplasia of the right ventricle and tricuspid valve in siblings

... Hypoplasia of the right ventricular chamber is seen in tricuspid atresia (Taussig, 1947) and in some cases of pulmonary atresia with intact ventricular septum, and it may be associated with tricuspid hypoplasia in the latter condition (Chiche, 1952). Apparently however, there have been no previous d ...
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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.
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