contrast echocardiography
... produces no echo, but because the ultrasound scattered by red blood cells at conventional imaging frequencies is very weak—several thousand times weaker than myocardium—and so lies below the displayed dynamic range. Contrast ultrasound results principally from the scattering of incident ultrasound a ...
... produces no echo, but because the ultrasound scattered by red blood cells at conventional imaging frequencies is very weak—several thousand times weaker than myocardium—and so lies below the displayed dynamic range. Contrast ultrasound results principally from the scattering of incident ultrasound a ...
Myocardial ischemia
... number of complications might arise, including: 1. Rupture of weakened myocardial wall. Bleeding into pericardium may cause cardiac tamponade and further impair cardiac pumping function. This is most likely to occur with a transmural infarction. Rupture of the septum between the ventricles might als ...
... number of complications might arise, including: 1. Rupture of weakened myocardial wall. Bleeding into pericardium may cause cardiac tamponade and further impair cardiac pumping function. This is most likely to occur with a transmural infarction. Rupture of the septum between the ventricles might als ...
arteriovenous aneurysm - Archives of Disease in Childhood
... Abnormal mass of vessels on medial side. Right cerebral hemisphere, communic. with great cerebral vein, ant. callosal artery enlarged Arteriovenous malformation near pineal with rapid filling of great vein of Galen; abnormally large ? left ant. cerebral artery Branches of post. cerebral arteries int ...
... Abnormal mass of vessels on medial side. Right cerebral hemisphere, communic. with great cerebral vein, ant. callosal artery enlarged Arteriovenous malformation near pineal with rapid filling of great vein of Galen; abnormally large ? left ant. cerebral artery Branches of post. cerebral arteries int ...
Carotid dP/dt as a Psychophysiological Index of Sympathetic
... confounding could be ignored (and hence be deleted from peak dP/dt, have also been shown to be depressed by Fig. 1) since this literature uniformly reported an absence vagal stimulation in reports by Harman and Reeves of vagal innervation to the ventricular myocardium (e.g., (1968) and Stanton and V ...
... confounding could be ignored (and hence be deleted from peak dP/dt, have also been shown to be depressed by Fig. 1) since this literature uniformly reported an absence vagal stimulation in reports by Harman and Reeves of vagal innervation to the ventricular myocardium (e.g., (1968) and Stanton and V ...
Approach to Cardiac Murmurs
... tricuspid or mitral area, does not radiate, and sudden standing and valsalva increase its intensity. A benign aortic systolic murmur may mimic these two, but it tends to be of a lower grade, and it can be present in well-trained athletes (with or without an S3), or those with other high output state ...
... tricuspid or mitral area, does not radiate, and sudden standing and valsalva increase its intensity. A benign aortic systolic murmur may mimic these two, but it tends to be of a lower grade, and it can be present in well-trained athletes (with or without an S3), or those with other high output state ...
Phosphatase regulation in cardiovascular physiology and disease
... data provided by an electrocardiogram can be used to diagnose a variety of cardiovascular diseases such as ventricular arrhythmia, atrial fibrillation, myocardial ischemia and heart failure. Although a detailed understanding of ECG interpretation is not required to understand the work described in t ...
... data provided by an electrocardiogram can be used to diagnose a variety of cardiovascular diseases such as ventricular arrhythmia, atrial fibrillation, myocardial ischemia and heart failure. Although a detailed understanding of ECG interpretation is not required to understand the work described in t ...
ECG Guide - Banner Health
... through the rhythm as you travel from R wave to R wave. If you do not have calipers, another method to determine regularity is to make a small mark on a piece of paper over two consecutive R waves, then move the paper to the next R wave and see if the dots line up/march out. Do the R waves follow a ...
... through the rhythm as you travel from R wave to R wave. If you do not have calipers, another method to determine regularity is to make a small mark on a piece of paper over two consecutive R waves, then move the paper to the next R wave and see if the dots line up/march out. Do the R waves follow a ...
Wnt signaling in right ventricular remodeling
... a female predisposition of 2:1 and an average mean PA pressure of 55 mmHg [9]. Most patients with PAH present exertional dyspnea, indicating an inability to increase cardiac output. Other reported symptoms include: fatigue or weakness, syncope and angina pectoris which are indicative of right heart ...
... a female predisposition of 2:1 and an average mean PA pressure of 55 mmHg [9]. Most patients with PAH present exertional dyspnea, indicating an inability to increase cardiac output. Other reported symptoms include: fatigue or weakness, syncope and angina pectoris which are indicative of right heart ...
the mitral valve in endocardial cushion defects - Heart
... defects of transitional type (grade II). Heart failure was or had been present in 2 patients in grade I, and 3 patients in grade II; all had severe mitral incompetence, and 2 had pulmonary hypertension of moderate severity. The 3 children in grade III had been in heart failure most of their lives. A ...
... defects of transitional type (grade II). Heart failure was or had been present in 2 patients in grade I, and 3 patients in grade II; all had severe mitral incompetence, and 2 had pulmonary hypertension of moderate severity. The 3 children in grade III had been in heart failure most of their lives. A ...
morphometric and biochemical characteristics of ventricular
... morphological and biochemical adaptation. One illustration of this adaptability is cardiac growth in adult animals, which functions to accommodate changes in work demand on the heart. Patterns of cardiac growth can be segregated into two categories: (1) growth that maintains a constant allometry bet ...
... morphological and biochemical adaptation. One illustration of this adaptability is cardiac growth in adult animals, which functions to accommodate changes in work demand on the heart. Patterns of cardiac growth can be segregated into two categories: (1) growth that maintains a constant allometry bet ...
Curriculum Vitae: Rachel Lampert
... Noninvasive Cardiology, in press 38. Su S. Lampert R. Lee F. Bremner JD. Snieder H. Jones L. Murrah NV. Goldberg J. Vaccarino V. Common genes contribute to depressive symptoms and heart rate variability: The Twins Heart Study. Twin Research & Human Genetics. 13(1):1-9, 2010 Feb. ...
... Noninvasive Cardiology, in press 38. Su S. Lampert R. Lee F. Bremner JD. Snieder H. Jones L. Murrah NV. Goldberg J. Vaccarino V. Common genes contribute to depressive symptoms and heart rate variability: The Twins Heart Study. Twin Research & Human Genetics. 13(1):1-9, 2010 Feb. ...
BLSEKGLP
... momentum to approach care from a more holistic viewpoint. The American Heart Association launched initiatives for STEMI systems and the American College of Cardiology worked with hospitals to reduce door to balloon times. The CDC provided funding to heart disease and prevention programs to create ca ...
... momentum to approach care from a more holistic viewpoint. The American Heart Association launched initiatives for STEMI systems and the American College of Cardiology worked with hospitals to reduce door to balloon times. The CDC provided funding to heart disease and prevention programs to create ca ...
A novel role for cardiac neural crest in heart development
... to formation of pharyngeal arches 3 and 4, which caused a diminished number of right aortic arch arteries to form. The left aortic arch arteries appeared to compensate for resultant flow changes by increasing in size, and the embryos showed no evidence of decreased contractility (R. Hixon et al., ma ...
... to formation of pharyngeal arches 3 and 4, which caused a diminished number of right aortic arch arteries to form. The left aortic arch arteries appeared to compensate for resultant flow changes by increasing in size, and the embryos showed no evidence of decreased contractility (R. Hixon et al., ma ...
Corrected Transposition of the Great Arteries
... Congenitally Corrected TGA Clinical features & diagnosis 1. Pathophysiology * Determined by VSD & pulmonary stenosis ; usually mild symptom, not severe pulmonary stenosis in infancy * Most often, presentation is in childhood or in second decade ; growth failure, exercise intolerance, cyanosis * Le ...
... Congenitally Corrected TGA Clinical features & diagnosis 1. Pathophysiology * Determined by VSD & pulmonary stenosis ; usually mild symptom, not severe pulmonary stenosis in infancy * Most often, presentation is in childhood or in second decade ; growth failure, exercise intolerance, cyanosis * Le ...
Full-Text PDF
... Doxorubicin (DOX) belongs to the family of anthracyclines, and has been used to against cancer since late 1960s. It is the most effective anticancer drugs. However, studies of cardiotoxic effects of DOX have been reported [1,2]. Therefore, chemotherapy with DOX is limited by its cardiotoxicity. The ...
... Doxorubicin (DOX) belongs to the family of anthracyclines, and has been used to against cancer since late 1960s. It is the most effective anticancer drugs. However, studies of cardiotoxic effects of DOX have been reported [1,2]. Therefore, chemotherapy with DOX is limited by its cardiotoxicity. The ...
Effectiveness of Implantable Cardioverter Defibrillators for Primary
... guidelines, indications for ICD therapy for primary prevention of SCD include patients with left ventricular ejection fractions (LVEFs) of 35% or less due to previous myocardial infarction (MI) who are at least 40 days post-MI and are in NYHA (New York Heart Association) class II or III; patients wi ...
... guidelines, indications for ICD therapy for primary prevention of SCD include patients with left ventricular ejection fractions (LVEFs) of 35% or less due to previous myocardial infarction (MI) who are at least 40 days post-MI and are in NYHA (New York Heart Association) class II or III; patients wi ...
Biventricular Pacing in Patients with Bradycardia and Normal
... an atrial-synchronized biventricular pacemaker capable of delivering right ventricular apical pacing or biventricular pacing, depending on the programming of the device (InSync III, Medtronic). In brief, the right atrial and right ventricular leads were positioned at the right atrial appendage and t ...
... an atrial-synchronized biventricular pacemaker capable of delivering right ventricular apical pacing or biventricular pacing, depending on the programming of the device (InSync III, Medtronic). In brief, the right atrial and right ventricular leads were positioned at the right atrial appendage and t ...
Mathematical Modeling of Electrocardiograms: A Numerical Study
... (see e.g. Sect. 4.6 in Lines et al.,32 and Sundnes et al.51) have shown realistic 12-lead ECG simulations. The main ingredients of our mathematical ECG model are standard (see e.g. Lines et al.,32 Pullan et al.,44 Sundnes et al.51): bidomain equations and phenomenological cell model for the heart, a ...
... (see e.g. Sect. 4.6 in Lines et al.,32 and Sundnes et al.51) have shown realistic 12-lead ECG simulations. The main ingredients of our mathematical ECG model are standard (see e.g. Lines et al.,32 Pullan et al.,44 Sundnes et al.51): bidomain equations and phenomenological cell model for the heart, a ...
life with hypertrophic cardiomyopathy
... cardiomyopathy have no symptoms, or have a stable condition throughout adult life. A few people develop serious symptoms and some people find that their symptoms get worse in later life. This may be because they develop an arrhythmia (an abnormal heart rhythm – see page 21). Or it may be because the ...
... cardiomyopathy have no symptoms, or have a stable condition throughout adult life. A few people develop serious symptoms and some people find that their symptoms get worse in later life. This may be because they develop an arrhythmia (an abnormal heart rhythm – see page 21). Or it may be because the ...
Heart valve disease - British Heart Foundation
... There is another test called a coronary angiogram, which is also known as cardiac catheterisation. This test is used to provide important information on the condition of your heart. A catheter (a long, hollow plastic tube) is passed into the artery in the groin, or sometimes into the arm. Using X-ra ...
... There is another test called a coronary angiogram, which is also known as cardiac catheterisation. This test is used to provide important information on the condition of your heart. A catheter (a long, hollow plastic tube) is passed into the artery in the groin, or sometimes into the arm. Using X-ra ...
With a Heart Murmur - McGraw-Hill Education
... Spontaneous chordal rupture can complicate the course of myxomatous mitral valve disease (MVP) and result in new-onset or “acute on chronic” severe MR. MVP may occur as an isolated phenomenon, or the lesion may be part of a more generalized connective tissue disorder as seen, for example, in patient ...
... Spontaneous chordal rupture can complicate the course of myxomatous mitral valve disease (MVP) and result in new-onset or “acute on chronic” severe MR. MVP may occur as an isolated phenomenon, or the lesion may be part of a more generalized connective tissue disorder as seen, for example, in patient ...
Relation of Ultrastructure to Function in the Intact Heart: Sarcomere
... with a clamp, and the right ventricle was opened widely. A Gregg cannula was inserted into the left main coronary artery and the aorta was sealed around the proximal portion of the cannula. For studies including the range of normal left ventricular end diastolic pressure (0 to 15 mm Hg), two cannula ...
... with a clamp, and the right ventricle was opened widely. A Gregg cannula was inserted into the left main coronary artery and the aorta was sealed around the proximal portion of the cannula. For studies including the range of normal left ventricular end diastolic pressure (0 to 15 mm Hg), two cannula ...
Heart valve disease - British Heart Foundation
... There is another test called a coronary angiogram, which is also known as cardiac catheterisation. This test is used to provide important information on the condition of your heart. A catheter (a long, hollow plastic tube) is passed into the artery in the groin, or sometimes into the arm. Using X-ra ...
... There is another test called a coronary angiogram, which is also known as cardiac catheterisation. This test is used to provide important information on the condition of your heart. A catheter (a long, hollow plastic tube) is passed into the artery in the groin, or sometimes into the arm. Using X-ra ...
Effect of Preload Reduction by Hemodialysis on Left Ventricular
... hypertrophy.1,2 These structural changes of LV are associated with impaired LV perfusion and function.3-5 Contraction of helical myocardial fibers of LV produces torsional deformation of LV. This twisting motion of LV has been shown to be a key factor of normal systolic and diastolic myocardial func ...
... hypertrophy.1,2 These structural changes of LV are associated with impaired LV perfusion and function.3-5 Contraction of helical myocardial fibers of LV produces torsional deformation of LV. This twisting motion of LV has been shown to be a key factor of normal systolic and diastolic myocardial func ...
Heart failure
Heart failure (HF), often referred to as congestive heart failure (CHF), occurs when the heart is unable to pump sufficiently to maintain blood flow to meet the body's needs. The terms chronic heart failure (CHF) or congestive cardiac failure (CCF) are often used interchangeably with congestive heart failure. Signs and symptoms commonly include shortness of breath, excessive tiredness, and leg swelling. The shortness of breath is usually worse with exercise, while lying down, and may wake the person at night. A limited ability to exercise is also a common feature.Common causes of heart failure include coronary artery disease including a previous myocardial infarction (heart attack), high blood pressure, atrial fibrillation, valvular heart disease, excess alcohol use, infection, and cardiomyopathy of an unknown cause. These cause heart failure by changing either the structure or the functioning of the heart. There are two main types of heart failure: heart failure due to left ventricular dysfunction and heart failure with normal ejection fraction depending on if the ability of the left ventricle to contract is affected, or the heart's ability to relax. The severity of disease is usually graded by the degree of problems with exercise. Heart failure is not the same as myocardial infarction (in which part of the heart muscle dies) or cardiac arrest (in which blood flow stops altogether). Other diseases that may have symptoms similar to heart failure include obesity, kidney failure, liver problems, anemia and thyroid disease.The condition is diagnosed based on the history of the symptoms and a physical examination with confirmation by echocardiography. Blood tests, electrocardiography, and chest radiography may be useful to determine the underlying cause. Treatment depends on the severity and cause of the disease. In people with chronic stable mild heart failure, treatment commonly consists of lifestyle modifications such as stopping smoking, physical exercise, and dietary changes, as well as medications. In those with heart failure due to left ventricular dysfunction, angiotensin converting enzyme inhibitors or angiotensin receptor blockers along with beta blockers are recommended. For those with severe disease, aldosterone antagonists, or hydralazine plus a nitrate may be used. Diuretics are useful for preventing fluid retention. Sometimes, depending on the cause, an implanted device such as a pacemaker or an implantable cardiac defibrillator may be recommended. In some moderate or severe cases cardiac resynchronization therapy (CRT) may be suggested or cardiac contractility modulation may be of benefit. A ventricular assist device or occasionally a heart transplant may be recommended in those with severe disease despite all other measures.Heart failure is a common, costly, and potentially fatal condition. In developed countries, around 2% of adults have heart failure and in those over the age of 65, this increases to 6–10%. In the year after diagnosis the risk of death is about 35% after which it decreases to below 10% each year. This is similar to the risks with a number of types of cancer. In the United Kingdom the disease is the reason for 5% of emergency hospital admissions. Heart failure has been known since ancient times with the Ebers papyrus commenting on it around 1550 BCE.