Determination of diastolic dysfunction by - Tubitak Journals
... myocardial relaxation (1,15,17). In the present study, this combined variable was the best single Doppler predictor of elevated filling pressures. In small animal medicine, it has been demonstrated that, for the lateral mitral annulus, E/E’ greater than 9.1 indicates a 95% probability that mean left ...
... myocardial relaxation (1,15,17). In the present study, this combined variable was the best single Doppler predictor of elevated filling pressures. In small animal medicine, it has been demonstrated that, for the lateral mitral annulus, E/E’ greater than 9.1 indicates a 95% probability that mean left ...
pressure and volume relationships in the ventricle
... Fig. 4. Pressures above and below the gynangial valves in Rana pipiem. Trace 1—pressures from systemic arch. Trace 2—pressures recorded using a needle inserted through the conus wall and manoeuvred past the valves into the systemic arch. As the record proceeds the needle is slowly pulled back into t ...
... Fig. 4. Pressures above and below the gynangial valves in Rana pipiem. Trace 1—pressures from systemic arch. Trace 2—pressures recorded using a needle inserted through the conus wall and manoeuvred past the valves into the systemic arch. As the record proceeds the needle is slowly pulled back into t ...
Limitations and difficulties of echocardiographic short
... updated Valve Academic Research Consortium (VARC) adopted the SAX criterion as “critical” in assessing the number and severity of paravalvular jets in patients who underwent TAVI [7]. Surprisingly, in the most recent VARC-2 publication [8] the arbitrary cut-off value to define severe PVL was changed ...
... updated Valve Academic Research Consortium (VARC) adopted the SAX criterion as “critical” in assessing the number and severity of paravalvular jets in patients who underwent TAVI [7]. Surprisingly, in the most recent VARC-2 publication [8] the arbitrary cut-off value to define severe PVL was changed ...
Human coronary sinus — from Galen to modern times
... artery” which conveys the blood to the lungs and “arterial vein” which carries the blood to the left half of the heart. His theory was not however promulgated. Studies on the heart were carried out also by Raymond Vieussens (1641–1715) who described a valve located in the vicinity of the termination ...
... artery” which conveys the blood to the lungs and “arterial vein” which carries the blood to the left half of the heart. His theory was not however promulgated. Studies on the heart were carried out also by Raymond Vieussens (1641–1715) who described a valve located in the vicinity of the termination ...
Tetralogy of Fallot: from fetus to adult
... pulmonary artery/aorta ratio, a forward flow in pulmonary artery and a aortic flow originated from the both ventricles. [13] However, other echocardiographic findings may be present according to the anatomical variations found in TOF. For example, in TOF with pulmonary atresia there are no forward ...
... pulmonary artery/aorta ratio, a forward flow in pulmonary artery and a aortic flow originated from the both ventricles. [13] However, other echocardiographic findings may be present according to the anatomical variations found in TOF. For example, in TOF with pulmonary atresia there are no forward ...
Department of Cardiothoracic Surgery Adult and Congenital Cardiac
... • 3 grafts or more were performed in 257 Isolated CABG surgeries which was higher than the UK data (87% in QMH vs 74% in UK ). • More detailed descriptions and explanations can be found in our CABG and Heart Valves ...
... • 3 grafts or more were performed in 257 Isolated CABG surgeries which was higher than the UK data (87% in QMH vs 74% in UK ). • More detailed descriptions and explanations can be found in our CABG and Heart Valves ...
Translating Novel Imaging Technologies Into Clinical Applications
... demonstrated, with severe aortic valve calcification demonstrating a strong association with increased all-cause mortality, over and above traditional predictors of outcome in aortic stenosis (Figure 2). Of note, aortic valve replacement was an independent predictor of improved survival in patients ...
... demonstrated, with severe aortic valve calcification demonstrating a strong association with increased all-cause mortality, over and above traditional predictors of outcome in aortic stenosis (Figure 2). Of note, aortic valve replacement was an independent predictor of improved survival in patients ...
CHAPTER 28 Three-Dimensional Echocardiographic Guidance of
... Real time 3D transesophageal echocardiography (3D TEE) and intracardiac echocardiography (ICE) are the most useful echocardiographic techniques for real time procedural guidance as their images are typically superior to and/or more relevant to interventionalists compared to images obtained by eith ...
... Real time 3D transesophageal echocardiography (3D TEE) and intracardiac echocardiography (ICE) are the most useful echocardiographic techniques for real time procedural guidance as their images are typically superior to and/or more relevant to interventionalists compared to images obtained by eith ...
Posture and Gender Differentially Affect Heart Rate Variability of
... Parasympathetic nerves are more active in the lying position, and sympathetic nerves are augmented in an orthostatic position. A change of posture in male or feActa Cardiol Sin 2016;32:467-476 ...
... Parasympathetic nerves are more active in the lying position, and sympathetic nerves are augmented in an orthostatic position. A change of posture in male or feActa Cardiol Sin 2016;32:467-476 ...
Simulation of the Frank-Starling Law of the Heart
... pulse pressure is increased. CO is transiently decreased, but within about 10 s it is increased from about 4500 mL/min to almost 6000 mL/min. At the next step, at 120 s, as preload is increased from 7 mm Hg to 8 mm Hg, a similar further increase of these variables occurs. At 180 s, when preload retu ...
... pulse pressure is increased. CO is transiently decreased, but within about 10 s it is increased from about 4500 mL/min to almost 6000 mL/min. At the next step, at 120 s, as preload is increased from 7 mm Hg to 8 mm Hg, a similar further increase of these variables occurs. At 180 s, when preload retu ...
Presentation (PowerPoint File) - IPAM
... How the Heart Works When it Fills In an effort to quantitate diastolic function using a number or an index, the filling process has been characterized via correlations of selected features of either fluid (blood) flow or tissue displacement or motion to LV ejection fraction, end-diastolic pressure ...
... How the Heart Works When it Fills In an effort to quantitate diastolic function using a number or an index, the filling process has been characterized via correlations of selected features of either fluid (blood) flow or tissue displacement or motion to LV ejection fraction, end-diastolic pressure ...
Echo-Doppler assessment of diastole: flow, function and
... Measurement of LA volume is highly feasible and reliable using the apical four-chamber and twochamber views or optimally three dimensional echocardiography. Scaling to body size is obtained by dividing LA volume by BSA (m2). There is a significant relation between LA remodelling and echocardiographic ...
... Measurement of LA volume is highly feasible and reliable using the apical four-chamber and twochamber views or optimally three dimensional echocardiography. Scaling to body size is obtained by dividing LA volume by BSA (m2). There is a significant relation between LA remodelling and echocardiographic ...
Progression of mitral regurgitation
... Other measurements. The LV end-systolic wall stress was determined using estimated end-systolic pressure (28) and echocardiographic measurement of LV geometry and wall thickness (29). Left atrial volume was measured with orthogonal apical views using the biplane area-length method (30). Cardiac inde ...
... Other measurements. The LV end-systolic wall stress was determined using estimated end-systolic pressure (28) and echocardiographic measurement of LV geometry and wall thickness (29). Left atrial volume was measured with orthogonal apical views using the biplane area-length method (30). Cardiac inde ...
Aortic Valve Replacement
... pressure gradient and the indexed effective orifice area (EOAi, i.e. PPM) for aortic bioprostheses in an in vitro physiologic pulse-duplicator system. Their findings led to the recommendation that the EOAi should ideally not be less than 0.9 to 1 cm2/m2 for aortic bioprostheses to minimize residual ...
... pressure gradient and the indexed effective orifice area (EOAi, i.e. PPM) for aortic bioprostheses in an in vitro physiologic pulse-duplicator system. Their findings led to the recommendation that the EOAi should ideally not be less than 0.9 to 1 cm2/m2 for aortic bioprostheses to minimize residual ...
Echocardiographic Evaluation of Ventricular Assist Devices
... shunting, particularly in the setting of pulmonary hypertension, which is relatively common in this group of patients (24, 25). Assessment of the Ascending Aorta The outflow cannula of an LVAD device is usually attached to the ascending aorta in as end to side anastomosis. As such, any pathology tha ...
... shunting, particularly in the setting of pulmonary hypertension, which is relatively common in this group of patients (24, 25). Assessment of the Ascending Aorta The outflow cannula of an LVAD device is usually attached to the ascending aorta in as end to side anastomosis. As such, any pathology tha ...
Percutaneous mitral valve repair: an overview of new interventional
... does not occur at the time of implantation and the degree of MR reduction cannot be known until at least several weeks have passed. The experience with this device in Phase I trials has clearly demonstrated that MR can be diminished. A majority of patients have a decrease in one grade of MR severit ...
... does not occur at the time of implantation and the degree of MR reduction cannot be known until at least several weeks have passed. The experience with this device in Phase I trials has clearly demonstrated that MR can be diminished. A majority of patients have a decrease in one grade of MR severit ...
Aortic stenosis: Who should undergo surgery, transcatheter valve
... It is characterized by years to decades of slow progression followed by rapid clinical deterioration and a high death rate once symptoms develop. Drug therapy for it remains ineffective, and surgical aortic valve replacement is the only effective long-term treatment. We discuss the indications for t ...
... It is characterized by years to decades of slow progression followed by rapid clinical deterioration and a high death rate once symptoms develop. Drug therapy for it remains ineffective, and surgical aortic valve replacement is the only effective long-term treatment. We discuss the indications for t ...
Cardiovascular
... the specific area of the heart this slide is from is unclear, so there is some uncertainty to its proper orientation and the identification of several of the structures; however, the major layers of the heart can be seen and identified; notice that the valve appears to be on the epicardial side of t ...
... the specific area of the heart this slide is from is unclear, so there is some uncertainty to its proper orientation and the identification of several of the structures; however, the major layers of the heart can be seen and identified; notice that the valve appears to be on the epicardial side of t ...
Developing a global fluid-structure interaction
... hemodynamic conditions associated with cardiovascular diseases. In recent clinical studies, it was established that regional pathologies of the aortic valve can alter the structural and hemodynamic function of the valve and coronary arteries. However, due to limitations either with medical imaging m ...
... hemodynamic conditions associated with cardiovascular diseases. In recent clinical studies, it was established that regional pathologies of the aortic valve can alter the structural and hemodynamic function of the valve and coronary arteries. However, due to limitations either with medical imaging m ...
development of interatrial and interventricular septum
... May be associated with other ASDs. Multiple defects can be seen if the floor of the fossa ovalis (AKA valve of the foramen ovale) is fenestrated. Ten to twenty percent have a functional mitral valve prolapse May be related to changing LV geometry associated with RV volume ...
... May be associated with other ASDs. Multiple defects can be seen if the floor of the fossa ovalis (AKA valve of the foramen ovale) is fenestrated. Ten to twenty percent have a functional mitral valve prolapse May be related to changing LV geometry associated with RV volume ...
About Myths and Facts in the Cardiovascular System of the Giraffe
... heart mass was determined to be 0.5% of body mass, which is similar to other mammals. A significantly higher number of nuclei in the adult myocardium compared to the young giraffe myocardium was found. Also an unusually high number of nuclei per cardiomyocyte was measured, compared to any other mamm ...
... heart mass was determined to be 0.5% of body mass, which is similar to other mammals. A significantly higher number of nuclei in the adult myocardium compared to the young giraffe myocardium was found. Also an unusually high number of nuclei per cardiomyocyte was measured, compared to any other mamm ...
Percutaneous Approaches to Valve Repair for Mitral Regurgitation
... Percutaneous therapy has emerged as an option for treatment of mitral regurgitation for selected, predominantly high-risk patients. Most of the percutaneous approaches are modifications of existing surgical approaches. Catheterbased devices mimic these surgical approaches with less procedural risk, d ...
... Percutaneous therapy has emerged as an option for treatment of mitral regurgitation for selected, predominantly high-risk patients. Most of the percutaneous approaches are modifications of existing surgical approaches. Catheterbased devices mimic these surgical approaches with less procedural risk, d ...
Corrected Transposition of the Great Arteries
... • It importantly reduces complexcity of the atrial baffle procedure • It eliminates complications related to the superior limb of the atrial baffle • It reduces flow across an RV-pulmonary trunk conduit • It likely increases conduit longevity ...
... • It importantly reduces complexcity of the atrial baffle procedure • It eliminates complications related to the superior limb of the atrial baffle • It reduces flow across an RV-pulmonary trunk conduit • It likely increases conduit longevity ...
MRI Anatomy and Positioning Series
... The heart consists of four chambers; the two smaller upper chambers are the right and left atria, and the two larger lower chambers are the right and left ventricles. An internal wall of tissue called the septum divides the right and left atria and ventricles (Figure 5). The area of the septum that ...
... The heart consists of four chambers; the two smaller upper chambers are the right and left atria, and the two larger lower chambers are the right and left ventricles. An internal wall of tissue called the septum divides the right and left atria and ventricles (Figure 5). The area of the septum that ...
Cardiac Surgery: Aortic Aneurysms
... Endovascular (inside the blood vessel) surgery is a procedure that requires only small incisions in the groin. The doctor uses special instruments and X-ray to guide the repair through the femoral artery into the aorta. A stent graft may be used to repair a descending thoracic aortic aneurysm. This ...
... Endovascular (inside the blood vessel) surgery is a procedure that requires only small incisions in the groin. The doctor uses special instruments and X-ray to guide the repair through the femoral artery into the aorta. A stent graft may be used to repair a descending thoracic aortic aneurysm. This ...
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.