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Look4MySounds - Estudo Geral
Look4MySounds - Estudo Geral

... Cardiovascular diseases (CVDs) are the leading cause of death worldwide. Obesity, population ageing, sedentary lifestyles, the rise of chronic diseases incidence and many other factors continue to increase this epidemic, with devastating causes. The cost of CVDs in Europe is estimated to be almost € ...
Cardiac Cycle - Just In Time Medicine
Cardiac Cycle - Just In Time Medicine

... ventricular pressure to increase rapidly. The increase in left ventricular pressure causes a momentary backflow of blood from the left ventricle to the left atrium, which closes the left atrioventricular (AV) valve (the mitral valve). Blood is not immediately ejected from the left ventricle into the ...
Understanding Lusitropy
Understanding Lusitropy

... Lusitropy describes the relaxation properties of the heart during the diastolic phase. Left Ventricle (LV) relaxation begins during late ejection and continues throughout an early rapid filling and ends fully relaxed by diastasis, before the atrial systole begins. Diastolic (lusitropic) properties c ...
Cardiac Murmurs
Cardiac Murmurs

... obstructive cardiomyopathy. Systolic ejection murmurs can also occur in conditions of high cardiac output, such as anemia and thyrotoxicosis. Innocent murmur.This is the most common murmur in school-aged children.3 The innocent murmur is a crescendo-decrescendo early systolic murmur that isheard bes ...
Figure 4 - JACC: Cardiovascular Interventions
Figure 4 - JACC: Cardiovascular Interventions

... Ltd., Suzhou, China), a self-expandable porcine valve, in the aortic position at our institution. All patients were considered to be prohibitive or high risk for surgical valve replacement (logistic EuroSCORE [European System for Cardiac Operative Risk Evaluation], 22.15% to 44.44%; mean, 29.32  7. ...
Mohamed Khairy Abd Alnaby Abd Alhamid Alshafey_paper1
Mohamed Khairy Abd Alnaby Abd Alhamid Alshafey_paper1

... used TV repair technique(7). A number of series have reported its short and long-term success (20-22). However, other investigators have reported its a relatively high recurrence rate particularly in patients with severe tricuspid annular dilation and/or pulmonary hypertension, so it has been recomm ...
Things you need to know
Things you need to know

... family member need to get these injections for? • It is very important that your child does not miss injections. If they do miss an injection, speak with clinic staff, and they will organise an injection as soon as possible. • Please let clinic staff know if you are moving, or going on holiday. Th ...
Fluid–structure interaction modeling of aortic valve stenosis at
Fluid–structure interaction modeling of aortic valve stenosis at

... the fluid velocity is equal to the structural timedependent deformation and the forces on the solid are induced through flow conditions [11–32]. Donea et al. [10] used an Arbitrary-Lagrange–Euler (ALE) mesh to discretize governing equations in their transient FSI modeling. According to the presented ...
The physiologic mechanisms of cardiac and vascular
The physiologic mechanisms of cardiac and vascular

... diminished (small) with a slow ascending limb (parvus), but in addition, the peak is ill defined and late (tardus) (5). Mackenzie (6) understood the physiologic mechanism, writing, "When there is marked narrowing of the aortic orifice, the full effect of the ventricular systole upon the arterial col ...
Prenatal Diagnosis of Pulmonary Atresia with Intact Ventricular
Prenatal Diagnosis of Pulmonary Atresia with Intact Ventricular

... An enlarged left heart, as was seen in this patient, results from an increased amount of blood being shunted to the left atrium because it cannot enter the right ventricle due to tricuspid stenosis. The foraminal flap may become very redundant, sometimes bulging into the left atrium to such a degree ...
Pregnancy Complicated by Valvular Heart Disease: An Update
Pregnancy Complicated by Valvular Heart Disease: An Update

... is 13 cases per 100 000 per year based on clinical screening,3 while estimations between 21.5 and 30.4 per 1000 have been reported in Cambodia and Mozambique when using echocardiographic screening.4 Besides its high prevalence, rheumatic heart disease in developing countries is characterized by the ...
The cone reconstruction of the tricuspid valve in Ebstein`s anomaly
The cone reconstruction of the tricuspid valve in Ebstein`s anomaly

... this cone base (which might or might not include a contribution from the septal leaflet, depending on its state of development) is sutured to the normal level of the tricuspid annulus. Unlike with the method of Carpentier and colleagues,6 this includes the septal region, resulting in central diastol ...
Understanding your child`s heart Tetralogy of Fallot
Understanding your child`s heart Tetralogy of Fallot

... pumps blood out into an artery. The right ventricle pumps blood – blue in the illustration – into the pulmonary artery (the blood vessel that takes blood to the lungs). The left ventricle pumps blood – red in the illustration – into the aorta (the blood vessel that takes blood to the rest of the bod ...
Blood Flow Velocity for Transcatheter Aortic Valve Implantation
Blood Flow Velocity for Transcatheter Aortic Valve Implantation

... The aim of this work is to add a completely new instrument to the equipment for the T.A.V.I. procedure. This instrument will be composed as it follows: a miniaturized sensor system, including a hot wire anemometer, will be mounted on the tip of a standard nonsensorized catheter commonly used in cli ...
Detection of Pulmonic and Tricuspid Valvular
Detection of Pulmonic and Tricuspid Valvular

... of a regurgitant valve between the sites of injection and of sampling.1-3 Decreased cardiac output or a left-to-right shunt may, however, obscure the changes produced in such curves by valvular regurgitation. Mitral regurgitation has been demonstrated by the prompt appearance in the left atrium of e ...
mitral valve disease : advances in catheter interventions
mitral valve disease : advances in catheter interventions

... rate (7-10). Once there is severe PH, mean survival drops to less than 3 years [11]. The mortality of untreated patients with MS is due to progressive pulmonary and systemic congestion in 60% to 70%, systemic embolism in 20% to 30%, pulmonary embolism in 10%, and infection in 1% to 5% [4, 9]. Serial ...
Case Report Hemolysis and Pulmonary Insufficiency
Case Report Hemolysis and Pulmonary Insufficiency

... a jet of blood such that the velocity across the pulmonic valve was increased. The calculated Reynolds number is increased behind the pulmonary valve because of the mixing of blood flowing from the right ventricle and the RVAD, thus accounting for the pulmonary insufficiency and clinical significant h ...
Your heart
Your heart

... system of arteries, veins, and capillaries (see p246). This system, together with your lungs, serves to oxygenate your blood, and ensure that every cell in your body receives the oxygen it needs to function. How your heart works Your heart weighs approximately 250–340g (9–12 oz). It is divided into ...
Full PDF - IOSR journals
Full PDF - IOSR journals

... unexamined despite intense interest in cardioanatomy. The number of cusps, their configuration and their size are still controversial. Although the right atrioventricular valve has three leaflets; autopsy series suggest that the number of leaflets may vary or that accessory leaflets may be found bet ...
0474 ch 14(281-305).
0474 ch 14(281-305).

... Although the heart’s right and left sides are separated from each other, they work together. Blood is squeezed through the chambers by a heart muscle contraction that begins in the thin-walled upper chambers, the atria, and is followed by a contraction of the thick muscle of the lower chambers, the ...
Effects of mitral valve regurgitation in the dog on the right ventricle
Effects of mitral valve regurgitation in the dog on the right ventricle

... heart is not great as the lesions develop slowly, and the large regurgitant volume is well accommodated for years, as both the LV and LA remodel and remain compliant, accommodating the large volumes (Lord 1976, Pape and others 1991, Pizzarello and others 1984, Zile and others 1991). The amount of re ...
Cardiac Morphology and Blood Pressure in the Adult Zebrafish
Cardiac Morphology and Blood Pressure in the Adult Zebrafish

... hematoxylin and eosin staining and Masson’s trichrome staining, and morphometric analysis on cell organelles with transmission electron photomicrographs. We measured atrial, ventricular, ventral, and dorsal aortic blood pressures (n ⱖ 5) with a servonull system. The atrioventricular orifice was posi ...
the mechanism of intracardiac shunting in the lizard varanus
the mechanism of intracardiac shunting in the lizard varanus

... almost identical peak blood pressures in aortic arches and pulmonary artery, whereas in Iguana iguana (non-varanid Lacertilia) peak pressure in the aortic arches is about 50% higher than in the pulmonary artery (White, 1968). Pressure separation in varanids is even better, resulting in 2-5 to 3-5 ti ...
The Aortomitral Angle is Suspended by the Anterior Mitral Basal “Stay”
The Aortomitral Angle is Suspended by the Anterior Mitral Basal “Stay”

... annulus plane was defined as plane that included both FTs (T1 and T2) and the middle of the posterior mitral annulus (PMA). The aortic annulus plane was defined as plane incorporating both FTs (T1 and T2) and the lowest point of the RCS (Fig. 2). Both planes defined the base of the heart with the hi ...
Read More - Ebstein`s Anomaly Foundation
Read More - Ebstein`s Anomaly Foundation

... forming a new TV resembling a cone (Figure 1, C). An important technical consideration is management of the septal leaflet. This leaflet is hypoplastic and displaced downward in Ebstein’s anomaly. However, in 22 patients it was sufficiently developed to take part in the newly constructed TV. Therefo ...
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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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