Three dimensional fluid structural interaction of tissue valves
... This thesis presents a stable fluid structural interaction technique to simulate the dynamics of tissue valves including bio-prosthetic heart valves and natural heart valves under physiological Reynolds numbers. A partitioned approach is implemented where the equations governing the flow and the dis ...
... This thesis presents a stable fluid structural interaction technique to simulate the dynamics of tissue valves including bio-prosthetic heart valves and natural heart valves under physiological Reynolds numbers. A partitioned approach is implemented where the equations governing the flow and the dis ...
Alteration of Systolic Time Intervals in Right Ventricular
... The reported value for each interval was the average of 35 separate determinations for patients in normal sinus rhythm and ten determinations for patients in atrial fibrillation. Atrial fibrillation occurred only in patients with mitral stenosis. Nine of the ten patients with right ventricular failu ...
... The reported value for each interval was the average of 35 separate determinations for patients in normal sinus rhythm and ten determinations for patients in atrial fibrillation. Atrial fibrillation occurred only in patients with mitral stenosis. Nine of the ten patients with right ventricular failu ...
Heart Failure
... causing pulmonary edema as fluid is forced from the pulmonary capillaries into the interstitial tissues and alveoli. A common cause of LV failure is increased systemic vascular resistance (as from atherosclerosis and hypertension), which increases the force of LV contractions, leading to increased d ...
... causing pulmonary edema as fluid is forced from the pulmonary capillaries into the interstitial tissues and alveoli. A common cause of LV failure is increased systemic vascular resistance (as from atherosclerosis and hypertension), which increases the force of LV contractions, leading to increased d ...
Pathophysiology of the pulmonary circulation
... normalized hematocrit of 45 %. For example, a PVR of 2 mmHg.min.L-1 in a patient with severe sickle cell anemia becomes 4 mmHg.min.L-1, which is diagnostic of pulmonary vascular disease. On the other hand, a PVR of 5 mmHg.min.L-1 at a hematocrit of 80 % in a patient with chronic mountain sickness co ...
... normalized hematocrit of 45 %. For example, a PVR of 2 mmHg.min.L-1 in a patient with severe sickle cell anemia becomes 4 mmHg.min.L-1, which is diagnostic of pulmonary vascular disease. On the other hand, a PVR of 5 mmHg.min.L-1 at a hematocrit of 80 % in a patient with chronic mountain sickness co ...
Dilated cardiomyopathy in mice deficient for the lysosomal cysteine
... left ventricular dimensions was observed in 1-year-old mice (Fig. 4). Again, four of the 14 ctsl⫺/⫺ mice investigated by echocardiography exhibited a severe enlargement of the left ventricle with a 2- to 3-fold increase in the volumes of the left ventricle at the end of systole and diastole, which w ...
... left ventricular dimensions was observed in 1-year-old mice (Fig. 4). Again, four of the 14 ctsl⫺/⫺ mice investigated by echocardiography exhibited a severe enlargement of the left ventricle with a 2- to 3-fold increase in the volumes of the left ventricle at the end of systole and diastole, which w ...
PDF
... the Minnesota Living with Heart Failure (MLHF) questionnaire to evaluate the severity of CHF. Our study demonstrated that there was a significant negative correlation between systolic mitral annular velocity (Sm wave) and both NYHA function class [P=0.027] and specific activity scale function class ...
... the Minnesota Living with Heart Failure (MLHF) questionnaire to evaluate the severity of CHF. Our study demonstrated that there was a significant negative correlation between systolic mitral annular velocity (Sm wave) and both NYHA function class [P=0.027] and specific activity scale function class ...
Long-term effects of non-excitatory cardiac contractility modulation
... during the absolute refractory period improved LV function in dogs with chronic heart failure HF . In the present study we examined the long-term effects of CCM signal delivery on the progression of LV dysfunction and remodeling in dogs with chronic HF. Ó»¬¸±¼-: Chronic HF was produced in 12 dogs by ...
... during the absolute refractory period improved LV function in dogs with chronic heart failure HF . In the present study we examined the long-term effects of CCM signal delivery on the progression of LV dysfunction and remodeling in dogs with chronic HF. Ó»¬¸±¼-: Chronic HF was produced in 12 dogs by ...
The Cardiovascular System: The Heart Heart`s Place in the
... forces generated during cardiac contraction • Stroke volume—Amount of blood pumped in a single beat • Cardiac output—Amount of blood ...
... forces generated during cardiac contraction • Stroke volume—Amount of blood pumped in a single beat • Cardiac output—Amount of blood ...
Chapter 13-cardiac 檔案
... Recording the Electrical Activity of the Heart with an Electrocardiogram 心電圖紀錄心臟的電性活性 ...
... Recording the Electrical Activity of the Heart with an Electrocardiogram 心電圖紀錄心臟的電性活性 ...
Left Ventricular Dynamic Geometry in the Intact and Open Chest Dog
... changes. Measuring devices fixed anatomically, such as radiopaque markers or ultrasonic crystals, are assumed to bear a fixed and physically meaningful relationship to the deforming ventricle (for example, when the markers are assumed to lie on the major and minor axes of an assumed elliptical chamb ...
... changes. Measuring devices fixed anatomically, such as radiopaque markers or ultrasonic crystals, are assumed to bear a fixed and physically meaningful relationship to the deforming ventricle (for example, when the markers are assumed to lie on the major and minor axes of an assumed elliptical chamb ...
Pressure and Volume Changes in the Cardiac
... 1) Place your whiteboard on the table, use the rulers as axes around the whiteboard 2) Divide the whiteboard into the three stages of the cardiac cycle (start with atrial systole) 3) Use one piece of wool to show the pressure changes in the atria 4) Use a different coloured piece of wool to show the ...
... 1) Place your whiteboard on the table, use the rulers as axes around the whiteboard 2) Divide the whiteboard into the three stages of the cardiac cycle (start with atrial systole) 3) Use one piece of wool to show the pressure changes in the atria 4) Use a different coloured piece of wool to show the ...
Right ventricular function in pulmonary
... fact that RV ejection continues after end-systole. This problem can be overcome by measuring pressure–volume loops at several levels of preload,24 but bedside manipulations of venous return are too invasive to be ethically acceptable. In addition, when applied to intact animals, changes in venous re ...
... fact that RV ejection continues after end-systole. This problem can be overcome by measuring pressure–volume loops at several levels of preload,24 but bedside manipulations of venous return are too invasive to be ethically acceptable. In addition, when applied to intact animals, changes in venous re ...
Restrictive Cardiomyopathy, Constrictive Pericarditis, and Cardiac
... valvular heart disease, and hypertrophic cardiomyopathy are the predominant myocardial disorders that result in diastolic dysfunction with relatively preserved systolic function (3). Restrictive cardiomyopathies are less common causes of diastolic dysfunction because of myocardial storage or infiltr ...
... valvular heart disease, and hypertrophic cardiomyopathy are the predominant myocardial disorders that result in diastolic dysfunction with relatively preserved systolic function (3). Restrictive cardiomyopathies are less common causes of diastolic dysfunction because of myocardial storage or infiltr ...
Ventricular mass index using magnetic resonance imaging
... measurements of the cardiac ventricles. This study investigated whether a calculated ventricular mass index (VMI) would provide an accurate means of estimating pulmonary artery pressure noninvasively, and compared the results with conventional Doppler echocardiography and invasive measurement. A tot ...
... measurements of the cardiac ventricles. This study investigated whether a calculated ventricular mass index (VMI) would provide an accurate means of estimating pulmonary artery pressure noninvasively, and compared the results with conventional Doppler echocardiography and invasive measurement. A tot ...
Effect of dual-chamber pacing on systolic and diastolic
... &KlWXCitMlOll),therc~aShIdltW~With-ia hothsy3tolkanddiastoliefmlethm-bntofkssorlMgnitadet&anthatdm+agpaeiagattbesbartestAVbtervakTbe ...
... &KlWXCitMlOll),therc~aShIdltW~With-ia hothsy3tolkanddiastoliefmlethm-bntofkssorlMgnitadet&anthatdm+agpaeiagattbesbartestAVbtervakTbe ...
Surgical removal of a large mobile left ventricular thrombus via left
... First line of treatment for a LV thrombus is anticoagulation; however, a large mobile thrombus as is in this case often requires urgent surgical thrombectomy. The concern with surgical removal of a large LV thrombus is ventricular function, since it is often seen in patients with poor LV function. T ...
... First line of treatment for a LV thrombus is anticoagulation; however, a large mobile thrombus as is in this case often requires urgent surgical thrombectomy. The concern with surgical removal of a large LV thrombus is ventricular function, since it is often seen in patients with poor LV function. T ...
Right ventricle - Anatomy and Physiology
... • The plaque, or an associated thrombus (clot), then narrows the passageway and reduces blood flow • Spasms in smooth muscles of vessel wall can further decrease or stop blood flow • One of the first symptoms of CAD is commonly angina pectoris ...
... • The plaque, or an associated thrombus (clot), then narrows the passageway and reduces blood flow • Spasms in smooth muscles of vessel wall can further decrease or stop blood flow • One of the first symptoms of CAD is commonly angina pectoris ...
The Left Main Complication of the Bentall`s Procedure
... stable angina following the Bentall’s procedure. Our patient in case 1 presented more acutely with left ventricular dysfunction that persisted after CABG; perhaps PCI should be more strongly considered in this acute setting. There are reports of successful short- to medium-term results from PCI. Lel ...
... stable angina following the Bentall’s procedure. Our patient in case 1 presented more acutely with left ventricular dysfunction that persisted after CABG; perhaps PCI should be more strongly considered in this acute setting. There are reports of successful short- to medium-term results from PCI. Lel ...
Impact of atrial fibrillation on long-term survival after cardiac valve
... Of the 556 patients who underwent cardiac valve surgery during the study period, 42% were women. The mean (± SD) age of the study population was 70.2±11.6 years. Of these patients, 27.5% had a history of diabetes, 79.1% had a history of hypertension and 7.7% had a history of stroke. In addition to t ...
... Of the 556 patients who underwent cardiac valve surgery during the study period, 42% were women. The mean (± SD) age of the study population was 70.2±11.6 years. Of these patients, 27.5% had a history of diabetes, 79.1% had a history of hypertension and 7.7% had a history of stroke. In addition to t ...
Tricuspid Valve Annuloplasty Reduces Weaning Time from
... procedures for mild-to-moderate tricuspid insufficiency improves early outcomes. Additionally, these outcomes are consistent with the review by Pal et al. [7], in which concomitant tricuspid procedures, unlike concomitant aortic procedures, were not associated with increased early mortality. However ...
... procedures for mild-to-moderate tricuspid insufficiency improves early outcomes. Additionally, these outcomes are consistent with the review by Pal et al. [7], in which concomitant tricuspid procedures, unlike concomitant aortic procedures, were not associated with increased early mortality. However ...
Tetralogy of Fallot Associated with Total Anomalous Pulmonary
... showed all the right-sided and most of the left-sided pulmonary veins draining into the coronary sinus. The left upper pulmonary vein was connected to a persistent left vertical vein, which drained into the innominate vein. An ascending aorta to right pulmonary artery anastomosis ( 4 mm incision), p ...
... showed all the right-sided and most of the left-sided pulmonary veins draining into the coronary sinus. The left upper pulmonary vein was connected to a persistent left vertical vein, which drained into the innominate vein. An ascending aorta to right pulmonary artery anastomosis ( 4 mm incision), p ...
Numerical Optimal Control of Turbo Dynamic Ventricular
... become increasingly applied, typically as a “bridge to transplantation”, i.e., for patients with no other alternative left [1]. In addition, by assisting and, thus, unloading the failing cardiac ventricle, VADs have also been shown to contribute to some degree to myocardial recovery [2,3]. Currently ...
... become increasingly applied, typically as a “bridge to transplantation”, i.e., for patients with no other alternative left [1]. In addition, by assisting and, thus, unloading the failing cardiac ventricle, VADs have also been shown to contribute to some degree to myocardial recovery [2,3]. Currently ...
ELECTROCARDIOGRAPHY
... branches out to the right and left, terminating in tiny fibers called Purkinje fibers. These fibers bring the electrical impulse to the individual heart muscle cells, leading to ventricular stimulation or depolarization. Depolarization can be simply thought of as the electrical stimulation of the he ...
... branches out to the right and left, terminating in tiny fibers called Purkinje fibers. These fibers bring the electrical impulse to the individual heart muscle cells, leading to ventricular stimulation or depolarization. Depolarization can be simply thought of as the electrical stimulation of the he ...
Mitral insufficiency
Mitral insufficiency (MI), mitral regurgitation or mitral incompetence is a disorder of the heart in which the mitral valve does not close properly when the heart pumps out blood. It is the abnormal leaking of blood backwards from the left ventricle, through the mitral valve, into the left atrium, when the left ventricle contracts, i.e. there is regurgitation of blood back into the left atrium. MI is the most common form of valvular heart disease.