Loading...
  • heart
  • Birth defects, age-related changes, infections, or other conditions can cause one or more of your heart valves to not open fully or to let blood leak back into the heart chambers. (nih.gov)
  • Heart valves can have three basic kinds of problems: regurgitation, stenosis, and atresia. (nih.gov)
  • Prolapse" is when the flaps of the valve flop or bulge back into an upper heart chamber during a heartbeat. (nih.gov)
  • This prevents the heart valve from fully opening. (nih.gov)
  • Atresia occurs if a heart valve lacks an opening for blood to pass through. (nih.gov)
  • Eventually, you may need to have your faulty heart valve repaired or replaced. (nih.gov)
  • In contrast to most other heart murmurs, the murmur of mitral valve prolapse is accentuated by standing and valsalva maneuver (earlier systolic click and longer murmur) and diminished with squatting (later systolic click and shorter murmur). (wikipedia.org)
  • Rheumatic fever is common worldwide and responsible for many cases of damaged heart valves. (wikipedia.org)
  • changes
  • The cardinal anatomic changes of the valve include leaflet thickening, commissural fusion, and shortening and thickening of the tendinous cords. (wikipedia.org)
  • late
  • Upon auscultation of an individual with mitral valve prolapse, a mid-systolic click, followed by a late systolic murmur heard best at the apex is common. (wikipedia.org)
  • aorta
  • The aortic valve is a valve in the human heart between the left ventricle and the aorta . (wikipedia.org)
  • When the pressure in the left ventricle rises above the pressure in the aorta, the aortic valve opens, allowing blood to exit the left ventricle into the aorta. (wikipedia.org)
  • The aortic valve allows blood to flow from the heart 's lower left chamber (ventricle) into the aorta and to the body. (webmd.com)
  • Valve located where the aorta meets the left ventricle of the heart. (medindia.net)
  • Hi, I too have a bicuspid aortic valve, have known since I was born about this problem, also had a coartation of my aorta at age 7. (medhelp.org)
  • Once the valve is in place and the aorta has been closed, the patient is taken off the heart-lung machine. (wikipedia.org)
  • Heart valves play a crucial role in ensuring the unidirectional flow of blood from the atrium to the ventricles, or from the ventricle to the aorta or pulmonary trunk. (wikipedia.org)
  • However, all fusion patterns associate with a specific area or areas of dilated enlargement in either the root of the ascending aorta, the ascending aorta, or the transverse aortic arch. (wikipedia.org)
  • Identifying hemodynamic patterns in the aorta after left ventricle systole aids in predicting consequential complications of bicuspid aortic valve. (wikipedia.org)
  • The patient-specific risk of developing complications such as aortic aneurysms is dependent on the particular aortic leaflet fusion pattern, with each pattern varying in 4D MRI measurements of wall shear stress (WSS), blood flow velocity, asymmetrical flow displacement and flow angle of the aorta. (wikipedia.org)
  • Valve between the left ventricle and the aorta that prevents blood from flowing from the aorta back into the heart. (dmoztools.net)
  • TAVR
  • Longterm TAVR valve durability >5 years remains unknown, especially relevant to patients with a longer life expectancy. (wikipedia.org)
  • The rationale for age-based recommendations is that surgical aortic valve replacements are known to be durable long-term (average of durability of 20 years) so people with longer life expectancy would be at higher risk if TAVR durability is worse than surgery. (wikipedia.org)
  • computed tomography
  • Comprehensive computed tomography angiography to assess aortic annulus geometry and peripheral access is now considered the standard of care in assessing TAVI candidates. (uptodate.com)
  • valvuloplasty
  • Some young people or pregnant women may have another procedure called balloon valvuloplasty to enlarge the valve opening. (webmd.com)
  • Safian RD, Berman AD, Diver DJ et al (1988) Balloon aortic valvuloplasty in 170 consecutive patients. (springer.com)
  • Otto CM, Mickel MC, Kennedy JW et al (1994) Three-year outcome after balloon aortic valvuloplasty. (springer.com)
  • As you may be aware, there are some centers that are performing in utero transcatheter balloon valvuloplasty procedures, in which a catheter is placed through the uterus, through the fetal chest wall, and into the heart across the valve. (medhelp.org)
  • In the current era, these children receive intervention via balloon aortic valvuloplasty rather than via surgery. (ahajournals.org)
  • aneurysms
  • Consumer health resource center providing information on causes, symptoms, and treatment option of aortic aneurysms. (dmoztools.net)
  • minimally
  • The first minimally invasive aortic valve surgery took place at the Cleveland Clinic in 1996. (wikipedia.org)
  • Some people who cannot have open-heart surgery may have a minimally invasive procedure to replace the valve. (webmd.com)
  • On the other hand, during exercise or other high flow states, systolic impulse-gradients can be measured in patients with minimally stenotic or even normal valves [ 2 ]. (uptodate.com)
  • Minimally invasive procedures limit the possibility to precisely judge the form of the aortic valve and will thus lead to a higher uncertainty regarding function and durability of aortic valve repair. (wikipedia.org)
  • leaky
  • The valve can become either leaky ( regurgitant or insufficient) or stuck partially shut ( stenotic ). (wikipedia.org)
  • At age 37 I had an echocardiogram everything was fine, I'm now 63 years old after another echocardiogram my doctor informed me I have a leaky aortic valve, for now he wants to monitor it yearly. (medhelp.org)
  • I have a leaky aortic valve also, discovered when I was a year or two younger than you. (medhelp.org)
  • Not much, but since the aortic valve is one that ideally should *not* be leaky--in contrast to the others--that discovery earns me a stress test and echo every year or so. (medhelp.org)
  • There is no cure for a leaky aortic valve, either, though diet and exercise are a good idea in general. (medhelp.org)
  • symptoms
  • Turner syndrome , a congenital condition that affects females, can often have a bicuspid aortic valve as one of its symptoms. (wikipedia.org)
  • Most patients with a bicuspid aortic valve are unaware of the diagnosis until late in life because symptoms and physical findings often are absent for many years. (ahajournals.org)
  • Surgery is indicated for symptoms such as shortness of breath, and in cases where the heart has begun to enlarge (dilate) from pumping the increased volume of blood that leaks back through the valve. (wikipedia.org)
  • The need for surgery on the aortic valve (including repair procedures) is indicated through objective criteria and the presence of symptoms. (wikipedia.org)
  • heart valve
  • There are two basic types of artificial heart valve , mechanical valves and tissue valves. (wikipedia.org)
  • Tissue heart valves are usually made from animal tissues, either animal heart valve tissue or animal pericardial tissue. (wikipedia.org)
  • Understanding your heart valve problem: Which solution may be right for you? (heart.org)
  • specific recommendations would be based on what his heart valve and left ventricular function are like. (medhelp.org)
  • My daughter is just recently married and is 28 years old with the conjenital heart defect of an aortic tricusp heart valve. (medhelp.org)
  • 1. Thickening refers to a build-up of excess tissue that restricts the ability of the heart valve to move and function normally. (medhelp.org)
  • This machine takes over the task of breathing for the patient and pumping their blood around while the surgeon replaces the heart valve. (wikipedia.org)
  • The Journal of Heart Valve Disease, 13(4), 534-537. (wikipedia.org)
  • stenotic
  • The pressure gradient across a stenotic valve is directly related to the valve orifice area and the transvalvular flow [ 1 ]. (uptodate.com)
  • Carabello BA, Grossman W. Calculation of stenotic valve orifice area. (uptodate.com)
  • Because of this, the valve area may be erroneously calculated as stenotic if the flow across the valve is low (i.e. if the cardiac output is low). (wikipedia.org)
  • durability
  • The durability of homograft valves is probably the same as for porcine tissue valves. (wikipedia.org)
  • The durability of homograft valves is comparable to porcine and bovine tissue valves. (wikipedia.org)
  • A repair procedure may not last forever, but in many instances the durability of an aortic valve repair will markedly exceed that of a biological prosthesis. (wikipedia.org)
  • The ultimate goal of the procedure is the restoration of a normal form of the aortic valve, which will then lead to near-normal function and good durability of the repair. (wikipedia.org)
  • cardiac
  • After some echo scans and a recent cardiac catheter, the doctors have decided that I need to have my aortic valve replaced. (medhelp.org)
  • A replaceable model of Cardiac Biological Valve Prosthesis. (wikipedia.org)
  • Comprehensive assessment of a quadricuspid aortic valve and coronary arteries by multidetector cardiac CT. (wikipedia.org)
  • For verification purposes of the obtained valve area using echocardiogram and doppler measures, especially if the obtained valve area is in the range requiring surgery and cardiac output is low, the Gold standard of left heart catheterization for true hemodynamics should be obtained for validation using the Gorlin formula, so patient does not go for unneeded surgery. (wikipedia.org)
  • The flow across the aortic valve is calculated by taking the cardiac output (measured in liters/minute) and dividing it by the heart rate (to give output per cardiac cycle) and then dividing it by the systolic ejection period measured in seconds per beat (to give flow per ventricular contraction). (wikipedia.org)
  • Valve Area (cm 2 ) = Cardiac Output ( ml min ) Heart rate ( beats min ) ⋅ Systolic ejection period (s) ⋅ 44.3 ⋅ mean Gradient (mmHg) {\displaystyle {\text{Valve Area (cm}}^{2}{\text{)}}={\frac {{\text{Cardiac Output }}({\frac {\text{ml}}{\text{min}}})}{{\text{Heart rate }}({\frac {\text{beats}}{\text{min}}})\cdot {\text{Systolic ejection period (s)}}\cdot 44.3\cdot {\sqrt {\text{mean Gradient (mmHg)}}}}}} The Gorlin equation is related to flow across the valve. (wikipedia.org)
  • The resulting simplified formula is: Aortic Valve area (cm 2 ) ≈ Cardiac Output ( litre min ) Peak to Peak Gradient (mmHg) {\displaystyle {\text{Aortic Valve area (cm}}^{2}{\text{)}}\approx {\frac {{\text{Cardiac Output}}({\frac {\text{litre}}{\text{min}}})}{\sqrt {\text{Peak to Peak Gradient (mmHg)}}}}} The Agarwal-Okpara-Bao equation is a new form of AVA evaluation equation. (wikipedia.org)
  • TAVI
  • In excess of 50,000 TAVI procedures have been performed to date using the Edwards SAPIEN or Medtronic CoreValve transcatheter aortic valves. (springer.com)
  • The indication for valve intervention (SAVR or TAVI) and choice of therapy based upon potential risks and benefits of treatment options should be discussed at a multidisciplinary heart team meeting. (uptodate.com)
  • mechanical
  • If he has a mechanical prosthetic valve, he will be on anticoagulation medicine to keep blood clots from forming on the valve. (medhelp.org)
  • Mechanical valves last much longer than tissue valves, but require one to be on blood thinning medicine for life - this complicates issues such as pregnancy. (medhelp.org)
  • Mechanical or biological valve is sugessted? (medhelp.org)
  • Mechanical valves are designed to outlast the patient, and have typically been stress-tested to last several hundred years. (wikipedia.org)
  • Although mechanical valves are long-lasting and generally present a one-surgery solution, there is an increased risk of blood clots forming with mechanical valves. (wikipedia.org)
  • As a result, mechanical valve recipients must take anticoagulant (blood thinning) drugs such as warfarin for the rest of their lives, making the patient more prone to bleeding. (wikipedia.org)
  • The sound of mechanical valves may be heard and decrease the quality of life. (wikipedia.org)
  • The surgeon then removes the patient's diseased aortic valve and a mechanical or tissue valve is put in its place. (wikipedia.org)
  • catheter
  • Moulopoulos SD, Anthopoulos L, Stamatelopoulos S et al (1971) Catheter-mounted aortic valves. (springer.com)
  • medical citation needed] The transfemoral approach requires the catheter and valve to be inserted via the femoral artery. (wikipedia.org)
  • medical citation needed] The transapical approach sees the catheter and valve inserted through the tip of the heart and into the left ventricle. (wikipedia.org)
  • medical citation needed] The transaortic approach sees the catheter and valve inserted through the top of the right chest. (wikipedia.org)
  • tissue
  • There are alternatives to animal tissue valves. (wikipedia.org)
  • Tissue valves gradually wear out over the course of several years. (medhelp.org)
  • Tissue valves tend to wear out faster with increased flow demands - such as with a more active (typically younger) person. (wikipedia.org)
  • Tissue valves are increasing lasting longer - now typically approximately 20 years, but they might wear out faster in younger people. (wikipedia.org)
  • 50mm and risk factors and connective tissue disease The goal of the operation is the improvement of life expectancy and treatment of heart failure as the consequence of dysfunction of the aortic valve. (wikipedia.org)
  • hemodynamics
  • Identification of hemodynamics for RL, RN, and left coronary and noncoronary leaflet fusion patterns enables detection of specific aortic regions susceptible to dysfunction and the eventual development of disease. (wikipedia.org)
  • pulmonary
  • A, Pathological examination revealed a pseudoaneurysm surrounding the aortic graft and a defect between the pseudoaneurysm and the right pulmonary artery (arrow). (ahajournals.org)
  • The atrial septum is removed, the aortic arch is reconstructed to remove any hypoplasia, and then the main pulmonary artery is connected into this reconstructed arch, resulting in the right ventricle ejecting directly into systemic circulation. (wikipedia.org)
  • pulmonary valve Grossly, vegetations form along lines of valve closure and are generally symmetric with a smooth or verrucoid (warty) texture. (wikipedia.org)
  • valve's
  • Two other additions were made: an integral valve holder which prevents the touching of the valve's cusps, and a 'freeze-watch' indicator as a safe-guard against exposing the valves during transportation or storage at temperatures below 4 degrees Celsius. (wikipedia.org)
  • Intervention
  • Once a catheter is in place, it can be used to perform a number of procedures including angioplasty, PCI (percutaneous coronary intervention) angiography, transcatheter aortic valve replacement, balloon septostomy, and an electrophysiology study or catheter ablation. (wikipedia.org)
  • More recent developments include the introduction of advanced cardiac mapping technologies for complex radio frequency ablation, and the development of a highly successful Transcatheter Aortic Valve Intervention programme for patients deemed unfit for conventional cardiac surgery. (wikipedia.org)
  • conduit
  • He still has leaky valves and obstruction/narrowing through the RV-PA conduit, but it hasn't worsened and it's well tolerated at this point (no RV or LV dilation, no symptoms). (blogspot.com)
  • Blood exits the left ventricle either through the natural valve or the bypass conduit. (wikipedia.org)
  • For the valved conduit, surgeons have used the Medtronic Hancock Model 105 or 150 valved conduits which contain a complete porcine aortic valve. (wikipedia.org)
  • obstruction
  • In essence, he's pumping against obstruction AND the blood is regurgitating back through the leaky valve, further limiting flow into the lungs and creating more work for his RV. (blogspot.com)
  • AAC, or AVB, relieves the obstruction to blood flow by adding a bioprosthetic valve to the circulatory system to decrease the load on the aortic valve. (wikipedia.org)
  • Physical
  • Physical cues such as pressure, velocity, flow patterns, and shear stress are known to act on the vascular network in a number of ways, including branching morphogenesis, enlargement of vessels in high-flow areas, angiogenesis, and the development of vein valves. (wikipedia.org)
  • coronary
  • Panos A, Amahzoune B, Robin J, Champsaur G, Ninet J. Influence of technique of coronary artery implantation on long-term results in composite aortic root replacement. (ahajournals.org)
  • stroke
  • The split in his valve caused a significant stroke that could have caused significant damage or death. (wikipedia.org)
  • repairs
  • He performed more than 500 mitral valve repairs and described new repair techniques such as the papillary muscle repositioning for anterior leaflet and posterior commissural prolapse. (wikipedia.org)
  • Patients
  • Throughout these five years of usage in 212 patients the performance of the pericardial valve was thoroughly evaluated. (wikipedia.org)
  • Approximately 200,000 pericardial valves manufactured by Shiley Laboratories were distributed around the world between 1976 and 1987 and it is presumed that most of them were implanted in patients. (wikipedia.org)
  • results
  • The results showed that this original valve exhibited the best haemodynamic performance, at rest and during exercise, when compared with the reported results of all other artificial valves in existence. (wikipedia.org)
  • Based on these results, the Shiley Laboratory in Irvine, California, began to manufacture this valve and to distribute it worldwide under the name of the 'Ionescu - Shiley Pericardial Xenograft. (wikipedia.org)
  • years
  • citation needed] In individuals having been offered mitral valve surgery but refused, survival with medical therapy alone was 44 ± 6% at 5 years, and 32 ± 8% at 10 years after they were offered correction. (wikipedia.org)
  • The durability of the valve was good at 5 years of follow-up. (wikipedia.org)
  • The use of this valve generated a lot of interest expressed in several specialist symposia, academic meetings, and numerous scientific articles published over the years. (wikipedia.org)
  • native
  • 1,2 In this technique, the diseased aorta is replaced by a Dacron graft by use of a continuous-suture technique at the anastomosis, and the native aorta wall is wrapped around the aortic graft. (ahajournals.org)
  • left
  • The LV apex needs to be within 9 cm of the abdominal wall and the left ventricle outflow track has to be parallel to the intended cannula course in order for the wire to be blindly directed at the aortic valve. (wikipedia.org)
  • particular
  • The thickness and pliability of the pericardium were standardized and the direction of macroscopically visible fibres matched for each three cusps of a particular valve. (wikipedia.org)
  • back
  • Other surgeons have constructed valved conduits on the back table using a variety of bioprosthetic valves such as the Medtronic Freestyle valve. (wikipedia.org)
  • general
  • Despite all these difficulties and impediments, a general view of the performance of the pericardial valve as close to reality as possible could be obtained. (wikipedia.org)