James M. Norton
... ignificant differences exist among textbook definitions for the terms preload and afterload, leading to confusion and frustration among students and faculty alike. Many faculty also chose to use in their teaching simple terms such as “end-diastolic volume” or “aortic pressure” as common-usage approx ...
... ignificant differences exist among textbook definitions for the terms preload and afterload, leading to confusion and frustration among students and faculty alike. Many faculty also chose to use in their teaching simple terms such as “end-diastolic volume” or “aortic pressure” as common-usage approx ...
04-Joao Marcelo EN.p65
... engineering [20], they are still not ideal and the durability of bioprostheses is a challenge that continues for those who work to preserve biological tissues. The replacement versus repair controversy, in selected mitral patients, has existed for many years [1,21] and demonstrates the merits relati ...
... engineering [20], they are still not ideal and the durability of bioprostheses is a challenge that continues for those who work to preserve biological tissues. The replacement versus repair controversy, in selected mitral patients, has existed for many years [1,21] and demonstrates the merits relati ...
Mitral Valve Clip for Treatment of Mitral Regurgitation: OHTAC
... Caused by valvular dysfunction, mitral regurgitation is the abnormal backflow of blood into the left atrium during cardiac systole that is normally prevented by the bicuspid mitral valve. (1) Mitral regurgitation may be acute or chronic. Acute mitral regurgitation is a medical and surgical emergency ...
... Caused by valvular dysfunction, mitral regurgitation is the abnormal backflow of blood into the left atrium during cardiac systole that is normally prevented by the bicuspid mitral valve. (1) Mitral regurgitation may be acute or chronic. Acute mitral regurgitation is a medical and surgical emergency ...
Ventricular septal defect - ePrints
... Results: Clinical manifestation depends on the size of the defect, and on the relationship between systemic and pulmonary vascular resistances. Symptoms include failure to thrive, along with the manifestations of the increase in flow of blood to the lungs. Diagnosis can be made by physical examinati ...
... Results: Clinical manifestation depends on the size of the defect, and on the relationship between systemic and pulmonary vascular resistances. Symptoms include failure to thrive, along with the manifestations of the increase in flow of blood to the lungs. Diagnosis can be made by physical examinati ...
non-atherosclerotic causes of cad
... L.V Aneurysm/Thrombus DCM Cardiac tumor Cardiac catheterization or cardiac surgery ...
... L.V Aneurysm/Thrombus DCM Cardiac tumor Cardiac catheterization or cardiac surgery ...
A morphometric study of ductus arteriosus and its implications for
... structure of these vessels is similar. After birth, the pulmonary vascular resistance decreases, whereas blood flow increases (STRANDING, 2005). These changes lead to increased thickness of the aortic wall in relation to the pulmonary artery. Moreover, the DA must occlude spontaneously due to their ...
... structure of these vessels is similar. After birth, the pulmonary vascular resistance decreases, whereas blood flow increases (STRANDING, 2005). These changes lead to increased thickness of the aortic wall in relation to the pulmonary artery. Moreover, the DA must occlude spontaneously due to their ...
Segers`s Paper - Bison Academy
... (Pes) and stroke volume (SV). Ea is then presented as a function of R and 1/C (total arterial stiffness). Assuming a three-element windkessel model (33) for the arterial circulation (consisting of R, C, and Z0), Sunagawa et al. (31, 32) showed that Ea can be calculated from arterial system propertie ...
... (Pes) and stroke volume (SV). Ea is then presented as a function of R and 1/C (total arterial stiffness). Assuming a three-element windkessel model (33) for the arterial circulation (consisting of R, C, and Z0), Sunagawa et al. (31, 32) showed that Ea can be calculated from arterial system propertie ...
Ventricular septal defect - Orphanet Journal of Rare Diseases
... Results: Clinical manifestation depends on the size of the defect, and on the relationship between systemic and pulmonary vascular resistances. Symptoms include failure to thrive, along with the manifestations of the increase in flow of blood to the lungs. Diagnosis can be made by physical examinati ...
... Results: Clinical manifestation depends on the size of the defect, and on the relationship between systemic and pulmonary vascular resistances. Symptoms include failure to thrive, along with the manifestations of the increase in flow of blood to the lungs. Diagnosis can be made by physical examinati ...
Comparison of the vascular effects of adenosine in isolated mouse
... aortic rings (with baseline resting tension of 1 g) were precontracted with phenylephrine. The CRCs for aortic relaxation by adenosine and its analogs were obtained by cumulative addition of agonist in the organ bath of rings precontracted with 1 M phenylephrine. The concentration of agonist in the ...
... aortic rings (with baseline resting tension of 1 g) were precontracted with phenylephrine. The CRCs for aortic relaxation by adenosine and its analogs were obtained by cumulative addition of agonist in the organ bath of rings precontracted with 1 M phenylephrine. The concentration of agonist in the ...
Congenital Aneurysm of the Sinus of Valsalva
... • Thin walled, saccular or tubular outpouchings, usually always in the right sinus or adjacent half of the noncoronary sinus. • They generally have an intracardiac course, but may protrude into the pericardial space and they may rupture into the right (or rarely left) heart chambers to form an aorta ...
... • Thin walled, saccular or tubular outpouchings, usually always in the right sinus or adjacent half of the noncoronary sinus. • They generally have an intracardiac course, but may protrude into the pericardial space and they may rupture into the right (or rarely left) heart chambers to form an aorta ...
View - OhioLINK ETD
... postural hypotension, and to establish whether or not a potential therapeutic agent might result in the inability to sustain systemic arterial blood pressure. The use of anesthetics is critical ...
... postural hypotension, and to establish whether or not a potential therapeutic agent might result in the inability to sustain systemic arterial blood pressure. The use of anesthetics is critical ...
Floppy mitral valve/mitral valve prolapse/mitral valvular
... The likelihood of finding FMV/MVP using echocardiography in patients with normal, carefully performed dynamic auscultation is extremely low. At times, distinguishing between the normal mitral valve with its minor variants and a mitral valve with an intrinsic structural derangement may be difficult. ...
... The likelihood of finding FMV/MVP using echocardiography in patients with normal, carefully performed dynamic auscultation is extremely low. At times, distinguishing between the normal mitral valve with its minor variants and a mitral valve with an intrinsic structural derangement may be difficult. ...
the role of open mitral valve repair or replacement for severe mitral
... When the severity of mitral regurgitation is already ...
... When the severity of mitral regurgitation is already ...
The Architecture of the Right Ventricular Outflow Tract
... cases of ventricular septal defect were dissected completely, and partially in four others, including two cases of truncus arteriosus. Twenty-two additional human hearts with cono-truncal abnormalities from various sources were studied without dissection of the musculature, but with landmarks develo ...
... cases of ventricular septal defect were dissected completely, and partially in four others, including two cases of truncus arteriosus. Twenty-two additional human hearts with cono-truncal abnormalities from various sources were studied without dissection of the musculature, but with landmarks develo ...
Subpulmonary Obstruction Due to Aneurysmal Ventricular Septum
... (aneurysm) is derived either from redundant tricuspid valve tissue or either from membranous septum itself.38,40 Even though these closures with aneurysms are beneficial in many patients with ventricular septal defect, sometimes the aneurysms can cause obstruction of the pulmonary outflow tract. In ...
... (aneurysm) is derived either from redundant tricuspid valve tissue or either from membranous septum itself.38,40 Even though these closures with aneurysms are beneficial in many patients with ventricular septal defect, sometimes the aneurysms can cause obstruction of the pulmonary outflow tract. In ...
Echocardiographic Evaluation of Ventricular Assist Devices
... parameters used in echocardiography to evaluate for this. Routine measures include mitral valve inflow pulse wave Doppler, pulmonary vein flow Doppler, and mitral annular tissue Doppler velocities (usually septal and lateral annular velocities) (10). Whilst these measures may not directly influence ...
... parameters used in echocardiography to evaluate for this. Routine measures include mitral valve inflow pulse wave Doppler, pulmonary vein flow Doppler, and mitral annular tissue Doppler velocities (usually septal and lateral annular velocities) (10). Whilst these measures may not directly influence ...
33rd ADVANCED ECHO CONFERENCE
... given, but program hosts are not responsible for any travel or hotel costs you may incur. ...
... given, but program hosts are not responsible for any travel or hotel costs you may incur. ...
Diagnosis and management of acute rheumatic fever and rheumatic heart disease in Australia
... is known as rheumatic heart disease (RHD) and it is an important cause of premature mortality. Almost all cases of RHD and associated deaths are preventable. The burden of ARF in industrialised countries declined dramatically during the 20th century, due mainly to reduced transmission and be�er avai ...
... is known as rheumatic heart disease (RHD) and it is an important cause of premature mortality. Almost all cases of RHD and associated deaths are preventable. The burden of ARF in industrialised countries declined dramatically during the 20th century, due mainly to reduced transmission and be�er avai ...
The Anatomical Study of Third Coronary Artery in Cadaveric Human
... Coronary Artery Disease (CAD). Symptoms and prognosis in patients with advanced CAD depend mostly on the degree of collateral circulation.11 The branches of TCA opens up in some cardiac pathology to provide collateral circulation and it has also been seen that they improves with age12. TCA may contr ...
... Coronary Artery Disease (CAD). Symptoms and prognosis in patients with advanced CAD depend mostly on the degree of collateral circulation.11 The branches of TCA opens up in some cardiac pathology to provide collateral circulation and it has also been seen that they improves with age12. TCA may contr ...
mechanisms of cardiac septation and valve development
... A mature mammalian heart has four valves and four chambers, with the wall of each chamber consisting of three tissue layers: endocardium, myocardium and epicardium (Fig. 1). The cardiac chambers and valves are organized such that they separate systemic from pulmonary circulation and ensure direction ...
... A mature mammalian heart has four valves and four chambers, with the wall of each chamber consisting of three tissue layers: endocardium, myocardium and epicardium (Fig. 1). The cardiac chambers and valves are organized such that they separate systemic from pulmonary circulation and ensure direction ...
Syncope - OSU CCME account - The Ohio State University
... • Outcome: 9 3 sec asystole and/or 50 mmHg fall in systolic blood pressure with reproduction of symptoms = ...
... • Outcome: 9 3 sec asystole and/or 50 mmHg fall in systolic blood pressure with reproduction of symptoms = ...
Left Atrial Myxoma Associated with Mitral Valve Pathology
... myxoma with annular dilatation in the presence of left atrial and left ventricular enlargement.1,9 But the rare feature in our patient was the presence of mitral annular dilatation without left atrial and left ventricular enlargement. This is an unusual finding and has rarely been reported previousl ...
... myxoma with annular dilatation in the presence of left atrial and left ventricular enlargement.1,9 But the rare feature in our patient was the presence of mitral annular dilatation without left atrial and left ventricular enlargement. This is an unusual finding and has rarely been reported previousl ...
Surgical Treatment of Ischemic Mitral Valve Regurgitation
... predicting factors of long-term prognosis. The mechanism of ischemic mitral regurgitation consists of mitral annular dilatation, left ventricular (LV) dilatation followed by tethering of the mitral valve, etc. Since long-term prognosis of the patients in whom the degree of mitral valve regurgitation ...
... predicting factors of long-term prognosis. The mechanism of ischemic mitral regurgitation consists of mitral annular dilatation, left ventricular (LV) dilatation followed by tethering of the mitral valve, etc. Since long-term prognosis of the patients in whom the degree of mitral valve regurgitation ...
Delayed depolarization of the cog-wheel valve
... the cog-wheel valve during each cardiac cycle and strongly suggest that depolarization of the muscle mass surrounding the valve is linked to RV contraction. White and Brady (unpublished observation cited in White, 1968) noted a 350 ms delay between depolarization ‘near the pulmonary artery’ and the ...
... the cog-wheel valve during each cardiac cycle and strongly suggest that depolarization of the muscle mass surrounding the valve is linked to RV contraction. White and Brady (unpublished observation cited in White, 1968) noted a 350 ms delay between depolarization ‘near the pulmonary artery’ and the ...
THE DEVELOPMENT OF AN INTRODUCTORY E-LEARNING MODULE ON ECHOCARDIOGRAPHY
... increasingly used by multiple clinicians due to its ease of use and the valuable information that can be obtained from it. As a result, echocardiography training has been incorporated into multiple postgraduate medical programs. In addition, there have been increasing attempts to incorporate this im ...
... increasingly used by multiple clinicians due to its ease of use and the valuable information that can be obtained from it. As a result, echocardiography training has been incorporated into multiple postgraduate medical programs. In addition, there have been increasing attempts to incorporate this im ...
Aortic stenosis
Aortic stenosis (AS) is the narrowing of the exit of the left ventricle of the heart such that problems result. It may occur at the aortic valve as well as above and below this level. It typically gets worse over time. Symptoms often come on gradually with a decreased ability to exercise often occurring first. If heart failure, loss of consciousness, or heart related chest pain occurs due to AS the outcomes are worse. Loss of consciousness typically occurs with standing or exercise. Signs of heart failure include shortness of breath especially with lying down, at night, and with exercise as well as swelling of the legs. Thickening of the valve without narrowing is known as aortic sclerosis.Causes include being born with a bicuspid aortic valve and rheumatic fever. A bicuspid aortic valve affects about one to two percent of the population while rheumatic heart disease mostly occurring in the developing world. A normal valve, however, may also harden over the decades. Risk factors are similar to those of coronary artery disease and include smoking, high blood pressure, high cholesterol, diabetes, and being male. The aortic valve usually has three leaflets and is located between the left ventricle of the heart and the aorta. AS typically results in a heart murmur. Its severity can be divided into mild, moderate, severe, and very severe based on ultrasound of the heart findings.Aortic stenosis is typically followed using repeated ultrasounds. Once it has become severe treatment primarily involves valve replacement surgery with transcatheter aortic valve replacement (TAVR) being an option in some who are at high risk from surgery. Valves may either be mechanical or bioprosthetic with each having risks and benefits. Another less invasive procedure, balloon aortic valvuloplasty (BAV) may result in benefit but this is for only for a few months. Complications like heart failure may be treated as per normal in those with mild to moderate AS. In those with severe disease a number of medications should be avoided including ACE inhibitors, nitroglycerin, and some beta blockers. Nitroprusside or phenylephrine may be used in those with decompensated heart failure depending on the blood pressure.Aortic stenosis is the most common valvular heart disease in the developed world. It affects about 2% of people who are over 65 years of age. Estimated rates are not known in most of the developing world as of 2014. In those who have symptoms, without repair, the chance of death at five years is about 50% and at 10 years is about 90%. Aortic stenosis was first described by French physician Lazare Rivière in 1663.