article as pdf
... Purpose: The purpose was to compare the ocular perfusion pressure (OPP) and the pulsatile ocular blood flow (POBF) in normal and systemic hypertensive patients. Materials and Methods: Totally, 121 individuals (normal n = 60, systemic hypertension patients n = 61) were enrolled in this prospective ag ...
... Purpose: The purpose was to compare the ocular perfusion pressure (OPP) and the pulsatile ocular blood flow (POBF) in normal and systemic hypertensive patients. Materials and Methods: Totally, 121 individuals (normal n = 60, systemic hypertension patients n = 61) were enrolled in this prospective ag ...
Heart Valve Mathematical Models - RIT Scholar Works
... Isogeometric models define geometry with techniques such as Non-uniform rational B-splines (NURBS) and generate a solution on the geometry without using an internal mesh as with finite elements [5]. Modeling biological membranes has been a primary application. Better accuracy can be attained on thi ...
... Isogeometric models define geometry with techniques such as Non-uniform rational B-splines (NURBS) and generate a solution on the geometry without using an internal mesh as with finite elements [5]. Modeling biological membranes has been a primary application. Better accuracy can be attained on thi ...
A case of a giant left ventricular pseudoaneurysm
... in the territory of cardiac necrosis. The presence of thrombus in the pseudoaneurysm, valve function and ventricular ejection fraction are more easily evaluated with MRI and provide additional information that may guide clinical decisions. Because this entity is relatively uncommon, there have been ...
... in the territory of cardiac necrosis. The presence of thrombus in the pseudoaneurysm, valve function and ventricular ejection fraction are more easily evaluated with MRI and provide additional information that may guide clinical decisions. Because this entity is relatively uncommon, there have been ...
The Valve Academic Research Consortium-2 consensus
... Josep Rodes-Cabau, Pascal Vranckx, John G. Webb, Stephan Windecker, Patrick W. Serruys, and Martin B. Leon Objectives: The aim of the current Valve Academic Research Consortium (VARC)-2 initiative was to revisit the selection and definitions of transcatheter aortic valve implantation (TAVI) clinica ...
... Josep Rodes-Cabau, Pascal Vranckx, John G. Webb, Stephan Windecker, Patrick W. Serruys, and Martin B. Leon Objectives: The aim of the current Valve Academic Research Consortium (VARC)-2 initiative was to revisit the selection and definitions of transcatheter aortic valve implantation (TAVI) clinica ...
Unusual RighttoLeft Shunt by SingleSided Bilateral Inferior Vena Cava
... drained into the left atrium through two large collateral vessels and (2) the anterior IVC received only blood from the hepatic veins and drained correctly into the right atrium. There was a small communication between the two vessels. The heart catheterization confirmed the azygos continuation recei ...
... drained into the left atrium through two large collateral vessels and (2) the anterior IVC received only blood from the hepatic veins and drained correctly into the right atrium. There was a small communication between the two vessels. The heart catheterization confirmed the azygos continuation recei ...
Full Article - College of Intensive Care Medicine
... al.32 They showed that applying lower-body negative pressure to normal individuals resulted in a decrease in left ventricular volume but, when they did the same to patients with heart failure, there was an increase in left ventricular volume. The explanation was that decompression of the right ventr ...
... al.32 They showed that applying lower-body negative pressure to normal individuals resulted in a decrease in left ventricular volume but, when they did the same to patients with heart failure, there was an increase in left ventricular volume. The explanation was that decompression of the right ventr ...
Patent ductus arteriosus in a lamb: A case report
... functioning lungs. Normally the ductus arteriosus narrows near term and tightens rapidly after birth in response to lowered pulmonary vascular resistance, increased systemic vascular resistance, increased blood volume, and increased left ventricular pressure when breathing begins and the placental b ...
... functioning lungs. Normally the ductus arteriosus narrows near term and tightens rapidly after birth in response to lowered pulmonary vascular resistance, increased systemic vascular resistance, increased blood volume, and increased left ventricular pressure when breathing begins and the placental b ...
Anatomy of Pericardium
... inserting the tubes of a coronary bypass machine, and then tightening the ligature, surgeons can stop or divert the circulation of blood in these large arteries while performing cardiac surgery. ...
... inserting the tubes of a coronary bypass machine, and then tightening the ligature, surgeons can stop or divert the circulation of blood in these large arteries while performing cardiac surgery. ...
Pacemaker Syndrome During Managed Ventricular
... block. During MVP, the AAI(R) mode operates with a dynamic atrial refractory period (ARP) set either to 75% of the R–R cycle length if heart rate is 75 bpm or faster, or to 600 ms if heart rate is slower than 75 bpm. The purpose of dynamic ARP is to avoid inappropriate switches to DDD(R) mode in the ...
... block. During MVP, the AAI(R) mode operates with a dynamic atrial refractory period (ARP) set either to 75% of the R–R cycle length if heart rate is 75 bpm or faster, or to 600 ms if heart rate is slower than 75 bpm. The purpose of dynamic ARP is to avoid inappropriate switches to DDD(R) mode in the ...
The Heart - Pearson Higher Education
... the ventricles. They contribute little to the propulsive pumping activity of the heart. Blood enters the right atrium via three veins (Figure 18.5c–e): ...
... the ventricles. They contribute little to the propulsive pumping activity of the heart. Blood enters the right atrium via three veins (Figure 18.5c–e): ...
Cardiomyopathies - Society of Cardiovascular Anesthesiologists
... suspected of having a cardiomyopathy is important to establish prognosis and to institute appropriate treatment. This talk will focus on salient echocardiographic features of primary cardiomyopathies, but may include discussion and description of none-primary cardiomyopathies for completeness. ...
... suspected of having a cardiomyopathy is important to establish prognosis and to institute appropriate treatment. This talk will focus on salient echocardiographic features of primary cardiomyopathies, but may include discussion and description of none-primary cardiomyopathies for completeness. ...
Arterial baroreflex regulation of blood pressure in patients
... Effects of arterial baroreceptor unloading in heart failure . Of importance, the blood pressure response to carotid sinus unloading (i .e ., deactivation) was significantly attenuated in the patients with heart failure . These observations suggest that the resting blood pressure position on the stim ...
... Effects of arterial baroreceptor unloading in heart failure . Of importance, the blood pressure response to carotid sinus unloading (i .e ., deactivation) was significantly attenuated in the patients with heart failure . These observations suggest that the resting blood pressure position on the stim ...
19 Congenital Heart Disease in Children and Adults
... the late 1980s. A European study of almost 600 patients with 22q11 deletion showed that 75% had a ventricular outflow abnormality, emphasizing the importance for understanding of cardiac development as well as patient management. Alagille’s syndrome is another example where a causative gene defect, ...
... the late 1980s. A European study of almost 600 patients with 22q11 deletion showed that 75% had a ventricular outflow abnormality, emphasizing the importance for understanding of cardiac development as well as patient management. Alagille’s syndrome is another example where a causative gene defect, ...
Clinical research priorities in adult congenital heart disease
... and general topics to ensure comprehensive consideration of all lesions. Distinct and specific research questions were generated for each, rather than general issues. Questions were circulated and revised over several iterations during a 12-month period. Overlapping questions were consolidated. From ...
... and general topics to ensure comprehensive consideration of all lesions. Distinct and specific research questions were generated for each, rather than general issues. Questions were circulated and revised over several iterations during a 12-month period. Overlapping questions were consolidated. From ...
Echocardiography in Pediatric and Congenital Heart
... pulsatile pulmonary blood flow through the pulmonary vascular bed. In the normal biventricular circulation pulmonary blood flow is generally not a limiting factor for determining cardiac output. In ischemic heart disease and cardiomyopathy, decreased cardiac pump function limits cardiac output. Afte ...
... pulsatile pulmonary blood flow through the pulmonary vascular bed. In the normal biventricular circulation pulmonary blood flow is generally not a limiting factor for determining cardiac output. In ischemic heart disease and cardiomyopathy, decreased cardiac pump function limits cardiac output. Afte ...
! General introduction Taco Kind
... to distention and recruitment if pressure increases. In PAH, however, resistance in these vessel can hardly be reduced due to medial hypertrophy10 and because most vessels have already been recruited11. As a consequence, total resting resistance is high and arterial compliance is low in PAH. The pre ...
... to distention and recruitment if pressure increases. In PAH, however, resistance in these vessel can hardly be reduced due to medial hypertrophy10 and because most vessels have already been recruited11. As a consequence, total resting resistance is high and arterial compliance is low in PAH. The pre ...
Evaluation of Diastolic Filling of Left Ventricle in Health and Disease
... Although diastolic function of the left ventricle is a complex interplay of numerous components, a simplistic conceptual framework can provide practical insight for the diagnosis and treatment of diastolic dysfunction. The classic approach has been to divide diastole into four discrete segments: iso ...
... Although diastolic function of the left ventricle is a complex interplay of numerous components, a simplistic conceptual framework can provide practical insight for the diagnosis and treatment of diastolic dysfunction. The classic approach has been to divide diastole into four discrete segments: iso ...
Escape-capture bigeminy caused by blocked - Heart
... The blocked atrial extrasystole discharges the sinoatrial node and is blocked at the atrioventricular node. The next sinus P wave occurs after an interval which is slightly longer than the sinus PP interval. Thus the P'P interval measures 0.75 s. This is caused by temporary depression of the sinoatr ...
... The blocked atrial extrasystole discharges the sinoatrial node and is blocked at the atrioventricular node. The next sinus P wave occurs after an interval which is slightly longer than the sinus PP interval. Thus the P'P interval measures 0.75 s. This is caused by temporary depression of the sinoatr ...
The association between apelin
... tachyarrhythmia. Atrial fibrillation is an extremely common arrhythmia arising from chaotic atrial depolarization. The most common cause of paroxysmal SVT is atrioventricular nodal reentrant tachycardia (AVNRT). ...
... tachyarrhythmia. Atrial fibrillation is an extremely common arrhythmia arising from chaotic atrial depolarization. The most common cause of paroxysmal SVT is atrioventricular nodal reentrant tachycardia (AVNRT). ...
LETHAL CARDIAC ANAPHYLAXIS IN THE RABBIT.* The
... of variable extent. Stimulation of the cut surfaces of the ventricles is sometimes feebly successful on, the left side, but only rarely on the right. The right ventricular muscle shows, as a rule, a peculiar soft, paper-like stiffness as it folds when the fluid blood is removed; its color is gray an ...
... of variable extent. Stimulation of the cut surfaces of the ventricles is sometimes feebly successful on, the left side, but only rarely on the right. The right ventricular muscle shows, as a rule, a peculiar soft, paper-like stiffness as it folds when the fluid blood is removed; its color is gray an ...
Copyright (c) 2009, Radiological Society of North America, Inc
... The right atrium is [*normal | dilated]. The right ventricle is [*normal | dilated | hypertrophied]. The left atrium is [*normal | dilated]. The left ventricle is [*normal | dilated | hypertrophied]. [There are features of [an interatrial septal defect | an interventricular septal defect | an intera ...
... The right atrium is [*normal | dilated]. The right ventricle is [*normal | dilated | hypertrophied]. The left atrium is [*normal | dilated]. The left ventricle is [*normal | dilated | hypertrophied]. [There are features of [an interatrial septal defect | an interventricular septal defect | an intera ...
Intracardiac flow visualization: current status and future directions
... motion patterns in a 3D volume. In this context, ECG synchronized 3D PC CMR using three-directional velocity encoding (also termed ‘4D flow MRI’) can be employed to visualize and quantify 3D blood flow characteristics in the heart and vessels.20,21 A number of recent methodological improvements (par ...
... motion patterns in a 3D volume. In this context, ECG synchronized 3D PC CMR using three-directional velocity encoding (also termed ‘4D flow MRI’) can be employed to visualize and quantify 3D blood flow characteristics in the heart and vessels.20,21 A number of recent methodological improvements (par ...
Lutembacher's syndrome
Lutembacher's syndrome is a form of congenital heart disease. Lutembacher's syndrome was first described by a French cardiologist by the name of Rene' Lutembacher (1884–1968) of Paris, France in 1916. Lutembacher syndrome is a rare disease that affects one of the chambers of the heart as well as a valve of the heart. Lutembacher's syndrome is known to affect females more often than males. Lutembacher is an extremely rare disease. Lutembacher's can affect children or adults; the person can either be born with the disorder or develop it later in life.Lutembacher affects more specifically the atria of the heart and the mitral or biscupid valve. The disorder itself is known more specifically as both congenital atrial septal defect (ASD) and acquired mitral stenosis (MS). Congenital (at birth) atrial septal defect refers to a hole being in the septum or wall that separates the two atria; this condition is usually seen in fetuses and infants. Mitral stenosis refers to mitral valve leaflets (or valve flaps) sticking to each other making the opening for blood to pass from the atrium to the ventricles very small. With the valve being so small, blood has difficulty passing through the left atrium into the left ventricle. There are several types of septal defects that may occur with Lutembacher's syndrome: ASD Ostium Secundum or ASD (Primium); Ostium Secundum is the most prevalent.Lutembacher is caused indirectly as the result of heart damage or disorders and not something that is necessarily infectious. Lutembacher's syndrome is caused by either birth defects where the heart fails to close all holes in the walls between the atria or from an episode of rheumatic fever where damage is done to the heart valves such as the mitral valve and resultant in an opening of heart wall between atria. With Lutembacher's syndrome, a fetus or infant is usually seen to have a hole in their heart wall (interatrial) separating their right and left atria. Normally during fetal development, blood bypasses the lungs and is oxygenated from the placenta. Blood passes from the umbilical cord and flows into the left atrium through an opening called the foramen ovale; the formaen ovale is a hole between the two atria. Once a baby is born and the lungs begin to fill with air and the blood flow of the heart changes, a tissue flap (somewhat like a trap door) called the septum primium closes the foramen ovale or hole between the two atria and becomes part of the atrial wall. The failure of the hole between the two atria to close after birth leads to a disorder called ASD primium. The most common problems with an opening found in the heart with Lutembacher's syndrome is Ostium Secundum. Ostium Secundum is a hole that is found within the flap of tissue (septum primium) that will eventually close the hole between the two atria after birth. With either type of ASD, ASD will usually cause the blood flow from the right atrium to skip going to the right ventricle and instead flow to the left atrium. If mitral stenosis (the hardening of flap of tissue known as a valve which opens and closes between the left atrium and ventricle to control blood flow) is also present, blood will flow into the right atrium through the hole between the atria wall instead of flowing into the left ventricle and systemic circulation. Eventually this leads to other problems such as the right ventricle failing and a reduced blood flow to the left ventricle.In addition to the ASD, acquired MS can be present either from an episode of rheumatic fever (the mother has or had rheumatic fever during the pregnancy) or the child being born with the disorder (congenital MS). With the combination of both ASD and MS, the heart can be under severe strain as it tries to move blood throughout the heart and lungs. To correct Lutembacher's syndrome, surgery is often done. There are several types of surgeries depending on the cause of Lutembacher's syndrome(ASD Primium or ASD Ostium Secundum with Mitral Stenosis): Suturing (stitching) or placing a patch of tissue (similar to skin grafting) over the hole to completely close the opening Reconstructing of the mitral and tricuspid valve while patching any holes in the heart Device closure of ASD (e.g. Amplatzer umbrella or CardioSEAL to seal the hole Percutaneous transcatheter therapy Transcatheter therapy of balloon valvuloplasty to correct MS↑ ↑ 2.0 2.1 2.2 2.3 2.4 ↑ 3.0 3.1 3.2 3.3 3.4 ↑ ↑ ↑ 6.0 6.1 6.2 6.3 ↑