PERSISTENCE OF LEFT SUPERIOR VENA CAVA IN
... presence of an additional large venous vessel – accessory vein, starting from the left subclavian vein and flowing into the coronary sinus, with well defined single branch - postero lateral, suitable for implantation of left ventricular lead (Fig. 1). A Left Ventricular (LV) unipolar lead, model “Q ...
... presence of an additional large venous vessel – accessory vein, starting from the left subclavian vein and flowing into the coronary sinus, with well defined single branch - postero lateral, suitable for implantation of left ventricular lead (Fig. 1). A Left Ventricular (LV) unipolar lead, model “Q ...
Circulatory_System_-_Parts_and_Function
... and mouth. It then makes its way into your lungs . Oxygen then sticks to red blood cells as they pass through the lungs on their path throughout the body - now the oxygen is in the blood. ...
... and mouth. It then makes its way into your lungs . Oxygen then sticks to red blood cells as they pass through the lungs on their path throughout the body - now the oxygen is in the blood. ...
Mean pulmonary arterial pressure after percutaneous mitral
... mean pulmonary artery pressure (mPAP) (30.0±10.8 vs. 23.2±7.6 mmHg, p=0.01). Using a Cox proportional hazards model, mPAP was the only predictor of post-PMV mitral reintervention (hazard ratio [HR] 5.639 [95% CI 1.246---25.528], p=0.025) (Table 3). The best immediate post-PMV mPAP cutoff value for p ...
... mean pulmonary artery pressure (mPAP) (30.0±10.8 vs. 23.2±7.6 mmHg, p=0.01). Using a Cox proportional hazards model, mPAP was the only predictor of post-PMV mitral reintervention (hazard ratio [HR] 5.639 [95% CI 1.246---25.528], p=0.025) (Table 3). The best immediate post-PMV mPAP cutoff value for p ...
Using High Resolution Cardiac CT Data to Model and Visualize
... the complex trabeculae of the heart wall and the blood, which has never been possible before, and used them to compare the flow fields between a healthy heart and two diseased hearts, which would potentially be extremely useful to doctors to help in diagnosis and treatment plans. This is the first time ...
... the complex trabeculae of the heart wall and the blood, which has never been possible before, and used them to compare the flow fields between a healthy heart and two diseased hearts, which would potentially be extremely useful to doctors to help in diagnosis and treatment plans. This is the first time ...
The Syndrome of Dextroversion of the Heart
... blunter, there is a prominent shadow high on the right side due to the right atrium, and the transposed aorta forms a prominent slow curve o1i the upper left side of the silhouette in the typical case. ...
... blunter, there is a prominent shadow high on the right side due to the right atrium, and the transposed aorta forms a prominent slow curve o1i the upper left side of the silhouette in the typical case. ...
(2) The Heart
... Some special myocardiocytes are not able to maintain a resting membrane potential // these areas allow sodium to leak into the cytoplasm of these cells those areas with the highest rate of ion leakage spontaneously reach threshold and cause an action potential (nodal potential) Sinoatrial Node (SA n ...
... Some special myocardiocytes are not able to maintain a resting membrane potential // these areas allow sodium to leak into the cytoplasm of these cells those areas with the highest rate of ion leakage spontaneously reach threshold and cause an action potential (nodal potential) Sinoatrial Node (SA n ...
Chap 14
... Tachycardia—rapid heart rate (more than 100 beats/min) Sinus dysrhythmia—variation in heart rate during breathing cycle Premature contraction (extrasystole)—contraction that occurs sooner than expected in a normal rhythm Fibrillation—condition in which cardiac muscle fibers are “out of step, ...
... Tachycardia—rapid heart rate (more than 100 beats/min) Sinus dysrhythmia—variation in heart rate during breathing cycle Premature contraction (extrasystole)—contraction that occurs sooner than expected in a normal rhythm Fibrillation—condition in which cardiac muscle fibers are “out of step, ...
Original Article Coronary artery disease in patients undergoing valve
... is consistent with this finding. We found significant coronary stenosis (> 50%) in 31.3% of patients undergoing valve replacement. Considering the overall prevalence of rheumatic heart disease in our population it is important to identify presence of significant CAD in this subgroup of patients. How ...
... is consistent with this finding. We found significant coronary stenosis (> 50%) in 31.3% of patients undergoing valve replacement. Considering the overall prevalence of rheumatic heart disease in our population it is important to identify presence of significant CAD in this subgroup of patients. How ...
Department of Medical Nursing, Faculty of Nursing, Chiang Mai
... Electrocardiogram (ECG) – This is a non-specific test that may be useful in diagnosing cardiac ischemia that is caused by CHF. ECG can also diagnose dysrhythmias that are caused by left ventricular hypertrophy (which often occurs in left sided failure). ...
... Electrocardiogram (ECG) – This is a non-specific test that may be useful in diagnosing cardiac ischemia that is caused by CHF. ECG can also diagnose dysrhythmias that are caused by left ventricular hypertrophy (which often occurs in left sided failure). ...
A Nonlinear State-Space Model of a Combined Cardiovascular
... volume of the ventricle are depicted in the form of pressurevolume (pv)-loops. The pv-loops in Figure 5a, represent the result of changing systemic vascular resistance (R1 ), while keeping end diastolic volume (EDV) constant. The pv-loops in Figure 5b depict the result of altering preload conditions ...
... volume of the ventricle are depicted in the form of pressurevolume (pv)-loops. The pv-loops in Figure 5a, represent the result of changing systemic vascular resistance (R1 ), while keeping end diastolic volume (EDV) constant. The pv-loops in Figure 5b depict the result of altering preload conditions ...
Full Text
... (MRI), a small part of parietal pericardium was defined (anterior to the right ventricle and over the right atrium). However, the pericardium could not be visualized in other parts. Interposition of the lung tissue between the aorta and pulmonary artery (aortopulmonary space), as a characteristic fi ...
... (MRI), a small part of parietal pericardium was defined (anterior to the right ventricle and over the right atrium). However, the pericardium could not be visualized in other parts. Interposition of the lung tissue between the aorta and pulmonary artery (aortopulmonary space), as a characteristic fi ...
2 nd Degree
... – P waves present and normal (upgoing in I, II, AVF), narrow QRS, beat to beat variability – Response to body’s need for increased cardiac output or oxygen delivery (ie: hypoxia, hypovolemia, fever, pain, anemia) ...
... – P waves present and normal (upgoing in I, II, AVF), narrow QRS, beat to beat variability – Response to body’s need for increased cardiac output or oxygen delivery (ie: hypoxia, hypovolemia, fever, pain, anemia) ...
Q21 Define preload and describe the determinants
... § Atrial contraction à a change in atrial contraction due to sympathetic stimulation or increased filling (via Starling) will affect ventricular filling and hence preload. Atrial arrhythmias (eg, AF) will affec ...
... § Atrial contraction à a change in atrial contraction due to sympathetic stimulation or increased filling (via Starling) will affect ventricular filling and hence preload. Atrial arrhythmias (eg, AF) will affec ...
the surgical treatment of the tetralogy of fallot
... stenosis of the infundibulum of the right ventricle, pulmonary valve area, or pulmonary arteries, with a large ventricular septal defect, and right and left ventricular pressures of the same order. Even in acyanotic patients, the stenosis is relatively severe, permitting bidirectional ventricular sh ...
... stenosis of the infundibulum of the right ventricle, pulmonary valve area, or pulmonary arteries, with a large ventricular septal defect, and right and left ventricular pressures of the same order. Even in acyanotic patients, the stenosis is relatively severe, permitting bidirectional ventricular sh ...
Heart and Circulation 13
... through systemic circulation = flow rate through pulmonary circulation. ...
... through systemic circulation = flow rate through pulmonary circulation. ...
Neonatal cardiac emergencies
... CHD diagnoses.5 In critical AS and HLHS the R to L PDA flow provides all the systemic perfusion and in the arch obstructions provides flow to the lower body causing differential cyanosis (pink arms, blue feet). However, this sign is less prominent or absent if there is intracardiac mixing of systemi ...
... CHD diagnoses.5 In critical AS and HLHS the R to L PDA flow provides all the systemic perfusion and in the arch obstructions provides flow to the lower body causing differential cyanosis (pink arms, blue feet). However, this sign is less prominent or absent if there is intracardiac mixing of systemi ...
Andreas Vesalius` Tabulae anatomicae sex (1538) and the
... doubtful, claiming he was unable to see these hypothetic pores: Thus we are compelled to astonishment at the industry of the Creator who causes the blood to sweat from the right ventricle into the left through passages which escape our sight (3). Vesalius, in the second edition of his Fabrica (1555) ...
... doubtful, claiming he was unable to see these hypothetic pores: Thus we are compelled to astonishment at the industry of the Creator who causes the blood to sweat from the right ventricle into the left through passages which escape our sight (3). Vesalius, in the second edition of his Fabrica (1555) ...
Results of surgical repair of atrial septal defects in
... CASE 25 This 58-year-old man, classified as grade IIIA (Table I), had an atrial septal defect in association with mitral incompetence due to a ruptured chord. He also showed the skeletal deformities of the HoltOram syndrome. His defect was successfully closed on cardiopulmonary bypass and a mitral v ...
... CASE 25 This 58-year-old man, classified as grade IIIA (Table I), had an atrial septal defect in association with mitral incompetence due to a ruptured chord. He also showed the skeletal deformities of the HoltOram syndrome. His defect was successfully closed on cardiopulmonary bypass and a mitral v ...
ATRIAL FIBRILLATION: MULTI-DETECTOR CT EVALUATION OF
... oxygenation and to pump blood out to the rest of the body. In atrial fibrillation an electrical impulse can originate from almost anywhere in the heart or pulmonary veins instead of at the sinoatrial node, causing the heart to receive several electrical impulses from various parts of the heart.2 As ...
... oxygenation and to pump blood out to the rest of the body. In atrial fibrillation an electrical impulse can originate from almost anywhere in the heart or pulmonary veins instead of at the sinoatrial node, causing the heart to receive several electrical impulses from various parts of the heart.2 As ...
The Heart (cont`d)
... The left ventricle must pump strongly enough to send blood out to the entire body. The right ventricle also has thick muscles; the muscles in the atria are thinner than those of either ventricle. ...
... The left ventricle must pump strongly enough to send blood out to the entire body. The right ventricle also has thick muscles; the muscles in the atria are thinner than those of either ventricle. ...
during fetal life - Journal of Clinical Pathology
... The hearts from 31 fetuses, aged between 12 and 40 weeks' gestation, were available for measurement. These hearts were all normal in structure and were obtained either from fetuses after abortion or from stillborn infants. The hearts were fixed in buffered formol saline for at least one week, Millar ...
... The hearts from 31 fetuses, aged between 12 and 40 weeks' gestation, were available for measurement. These hearts were all normal in structure and were obtained either from fetuses after abortion or from stillborn infants. The hearts were fixed in buffered formol saline for at least one week, Millar ...
Three-Dimensional Doppler Ultrasound: A Tool for the 21`st Century
... vessels. The data was captured and transferred (1) to a Silicon Gaphics Indlgo2 (Mountain View, CA ) where the color in the composite image was used to separate the color power Doppler from the gray scale image. The mult iple “bread loaf slices” of the vessel were then reconstructed using the AVSm v ...
... vessels. The data was captured and transferred (1) to a Silicon Gaphics Indlgo2 (Mountain View, CA ) where the color in the composite image was used to separate the color power Doppler from the gray scale image. The mult iple “bread loaf slices” of the vessel were then reconstructed using the AVSm v ...
How Worried Should I Be about This Heart Murmur?
... and that any animal can have any abnormality, regardless of the breed. Cats show less breed predilection for specific CHD, but mitral valve dysplasia and ventricular septal defects are the most common abnormalities in all cats. Discovery of a “new” murmur in an older animal usually occurs as the ani ...
... and that any animal can have any abnormality, regardless of the breed. Cats show less breed predilection for specific CHD, but mitral valve dysplasia and ventricular septal defects are the most common abnormalities in all cats. Discovery of a “new” murmur in an older animal usually occurs as the ani ...
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 ↑