Antitachycardia Pacing for Ventricular Tachycardia
... Relationship Between Monomorphic VT and Ventricular Fibrillation The underlying mechanism for ventricular fibrillation (VF) not associated with acute myocardial infarction is poorly understood. Ambulatory monitoring has clearly demonstrated that sustained monomorphic VT precedes some episodes of VF. ...
... Relationship Between Monomorphic VT and Ventricular Fibrillation The underlying mechanism for ventricular fibrillation (VF) not associated with acute myocardial infarction is poorly understood. Ambulatory monitoring has clearly demonstrated that sustained monomorphic VT precedes some episodes of VF. ...
Arrhythmogenic right ventricular cardiomyopathy in a dog
... instances26. Although it has been termed right ventricular dysplasia in some of the literature referring to humans 3,10,20,21 , abnormal embryogenesis is not believed by all investigators to be involved6,9, and the term cardiomyopathy may be more appropriate. Ventricular tachycardia (often of left o ...
... instances26. Although it has been termed right ventricular dysplasia in some of the literature referring to humans 3,10,20,21 , abnormal embryogenesis is not believed by all investigators to be involved6,9, and the term cardiomyopathy may be more appropriate. Ventricular tachycardia (often of left o ...
Progressive Dystrophic Pathology in Diaphragm and Impairment of
... FKRP mutations are the most common causes of the dystroglycanopathies. Almost all of the FKRP mutations are missense point mutations with the C826A mutation being the most common. While no specific correlation between mutation site and disease phenotype has been established, the C826A homozygotes ar ...
... FKRP mutations are the most common causes of the dystroglycanopathies. Almost all of the FKRP mutations are missense point mutations with the C826A mutation being the most common. While no specific correlation between mutation site and disease phenotype has been established, the C826A homozygotes ar ...
Opening and Closing Characteristics of the Aortic Valve
... Background—The surgical approach to aortic root aneurysm and/or dissection remains controversial. The use of valve-sparing operations, which are thought to have many advantages, is increasing. We hypothesized that the particular technique and type of surgery could influence valve motion characterist ...
... Background—The surgical approach to aortic root aneurysm and/or dissection remains controversial. The use of valve-sparing operations, which are thought to have many advantages, is increasing. We hypothesized that the particular technique and type of surgery could influence valve motion characterist ...
Impairment of cardiac insulin signaling and myocardial contractile
... Heart disease is a leading cause of death in diabetic patients (43); with coronary artery disease (CAD) and atherosclerosis being the primary reasons for increased incidence of cardiovascular dysfunction (43, 38). However, a predisposition to heart failure might also reflect the effects of underlyin ...
... Heart disease is a leading cause of death in diabetic patients (43); with coronary artery disease (CAD) and atherosclerosis being the primary reasons for increased incidence of cardiovascular dysfunction (43, 38). However, a predisposition to heart failure might also reflect the effects of underlyin ...
Lipomatous Hypertrophy of the Interatrial Septum
... to the absence of myxoma cells and myxoid areas. Cardiac lipoma is a very rare encapsulated tumor that is composed of only mature adipocytes.5,12 Occasionally, multivacuolated fat cells are seen in lipomatous hypertrophy leading to a misdiagnosis of a well-differentiated liposarcoma. However, they d ...
... to the absence of myxoma cells and myxoid areas. Cardiac lipoma is a very rare encapsulated tumor that is composed of only mature adipocytes.5,12 Occasionally, multivacuolated fat cells are seen in lipomatous hypertrophy leading to a misdiagnosis of a well-differentiated liposarcoma. However, they d ...
Mitophagy and mitochondrial biogenesis in atrial tissue of patients
... The substantial increase in strand breaks in mtDNA is indicative of oxidative stress associated with reperfusion injury. The increase occurs despite ongoing mitophagy, and it is unknown whether mitophagy is able to selectively eliminate mitochondria with the greatest DNA damage or whether it is nons ...
... The substantial increase in strand breaks in mtDNA is indicative of oxidative stress associated with reperfusion injury. The increase occurs despite ongoing mitophagy, and it is unknown whether mitophagy is able to selectively eliminate mitochondria with the greatest DNA damage or whether it is nons ...
CONSTRICTIVE PERICARDITIS
... affects all chambers of the heart. Localized constriction, which may produce external stenosis of the mitral and tricuspid valves, is rare (1) . In the chronic stage, pericardial calcification may develop, but it may be absent in earlier stages despite severe hemodynamic compromise. Tuberculosis was ...
... affects all chambers of the heart. Localized constriction, which may produce external stenosis of the mitral and tricuspid valves, is rare (1) . In the chronic stage, pericardial calcification may develop, but it may be absent in earlier stages despite severe hemodynamic compromise. Tuberculosis was ...
Modeling pathologies of diastolic and systolic heart failure
... during the past 20 years, heart failure remains one of the most common, costly, disabling, and deadly medical conditions affecting more than 25 million people worldwide [40]. Heart failure usually worsens over time; it is the major cause of hospitalization in the elderly with a five-year mortality r ...
... during the past 20 years, heart failure remains one of the most common, costly, disabling, and deadly medical conditions affecting more than 25 million people worldwide [40]. Heart failure usually worsens over time; it is the major cause of hospitalization in the elderly with a five-year mortality r ...
Unilateral Absence of a Pulmonary Artery in Absent Pulmonary
... association with absent pulmonary valve syndrome could not be found. With respect to clinical features, all patients in whom data could be obtained were symptomatic with respiratory difficulty and or cyanosis and the symptoms started in the first week of life in 6 of them7,8,11,12) and at 3 months o ...
... association with absent pulmonary valve syndrome could not be found. With respect to clinical features, all patients in whom data could be obtained were symptomatic with respiratory difficulty and or cyanosis and the symptoms started in the first week of life in 6 of them7,8,11,12) and at 3 months o ...
The Failing Fontan Transplant and VAD Options
... outcomes in Fontan patients 1. Improved surveillance of end-organs and early referral. 2. Share experiences, via a learning network, regarding VAD in the Fontan to further the understand which patients will benefit from VAD and best support strategy. 3. Advocate for alterations of the organ allocati ...
... outcomes in Fontan patients 1. Improved surveillance of end-organs and early referral. 2. Share experiences, via a learning network, regarding VAD in the Fontan to further the understand which patients will benefit from VAD and best support strategy. 3. Advocate for alterations of the organ allocati ...
Scientific Evidence Underlying the ACC/AHA Clinical Practice
... Context The joint cardiovascular practice guidelines of the American College of Cardiology (ACC) and the American Heart Association (AHA) have become important documents for guiding cardiology practice and establishing benchmarks for quality of care. Objective To describe the evolution of recommenda ...
... Context The joint cardiovascular practice guidelines of the American College of Cardiology (ACC) and the American Heart Association (AHA) have become important documents for guiding cardiology practice and establishing benchmarks for quality of care. Objective To describe the evolution of recommenda ...
Eur Heart J-2005--1115-40
... In spite of the fact that standards for issuing good quality Guidelines and Expert Consensus Documents are well defined, recent surveys of Guidelines and Expert Consensus Documents published in peer-reviewed journals between 1985 and 1998 have shown that methodological standards were not complied wit ...
... In spite of the fact that standards for issuing good quality Guidelines and Expert Consensus Documents are well defined, recent surveys of Guidelines and Expert Consensus Documents published in peer-reviewed journals between 1985 and 1998 have shown that methodological standards were not complied wit ...
Increased plasma levels of adrenomedullin in patients with
... has been detected in human plasma, and human adrenomedullin messenger RNA is reported to be highly expressed not only in pheochromocytoma, but also in the normal adrenal medulla, kidney, lung and ventricle (2). Recent studies (3,4) report that vascular smooth muscle cells possess specific adrenomedu ...
... has been detected in human plasma, and human adrenomedullin messenger RNA is reported to be highly expressed not only in pheochromocytoma, but also in the normal adrenal medulla, kidney, lung and ventricle (2). Recent studies (3,4) report that vascular smooth muscle cells possess specific adrenomedu ...
- Wiley Online Library
... and an increased number of apopototic cells in the right atrioventricular cushions (Sedmera et al., 2002), as well as increased microtubule density in the left ventricular compact layer (Schroder et al., 2002). Despite the limited number of studies focusing on vascular development compared with the ...
... and an increased number of apopototic cells in the right atrioventricular cushions (Sedmera et al., 2002), as well as increased microtubule density in the left ventricular compact layer (Schroder et al., 2002). Despite the limited number of studies focusing on vascular development compared with the ...
Increased Superoxide Radical with a Decrease in Vascular
... the minimal rate of contraction (–dP/dt) and the isovolumic relaxation time (tau) were significantly lower than the control heart with no deterioration in systolic function at 16 weeks after the operation, whereas both the maximal rate of relaxation (+dP/dt) and –dP/dt were significantly deteriorate ...
... the minimal rate of contraction (–dP/dt) and the isovolumic relaxation time (tau) were significantly lower than the control heart with no deterioration in systolic function at 16 weeks after the operation, whereas both the maximal rate of relaxation (+dP/dt) and –dP/dt were significantly deteriorate ...
What`s happening to my body when I have heart
... ways to cope with stress better. Some ways that you can do this are: • Talk with family, friends, or other people that you trust about your concerns and stresses and ask them for advice and support. Or write down what’s bothering you. Some people find that writing in a journal helps to reliev ...
... ways to cope with stress better. Some ways that you can do this are: • Talk with family, friends, or other people that you trust about your concerns and stresses and ask them for advice and support. Or write down what’s bothering you. Some people find that writing in a journal helps to reliev ...
Jorgensen_J1010 Manual_0211.indd
... As lead II may not align with the cat’s axis, the signal is small and sometimes cancels. Therefore, by moving RA more centrally onto the cat’s body above the top, and LL onto the cat’s body below the bottom of the heart, a much larger signal will be obtained. The plane in which the cat’s heart lies ...
... As lead II may not align with the cat’s axis, the signal is small and sometimes cancels. Therefore, by moving RA more centrally onto the cat’s body above the top, and LL onto the cat’s body below the bottom of the heart, a much larger signal will be obtained. The plane in which the cat’s heart lies ...
Multimodal functional cardiac MRI in creatine kinase
... whereas the myocytes in these hearts undergo hypertrophy, the number of capillaries does not increase, and a demand/supply mismatch may ensue. In rats, a reduction in capillary density has also been described in the hypertrophied areas of remodeled myocardium (1) and has been demonstrated to result ...
... whereas the myocytes in these hearts undergo hypertrophy, the number of capillaries does not increase, and a demand/supply mismatch may ensue. In rats, a reduction in capillary density has also been described in the hypertrophied areas of remodeled myocardium (1) and has been demonstrated to result ...
The use of Tricuspid Annular Plane Systolic Excursion and Tissue
... afterload, leading to acute distention, paradoxic intra-ventricular septal movement and consequently, reduced LV filling and cardiac output (CO) (Pinsky, 2002, 2007; Sibbald & Driedger, 1983). Due to ventricular interdependence superficial myocardial fibers enrich both LV and RV. As a result, the tw ...
... afterload, leading to acute distention, paradoxic intra-ventricular septal movement and consequently, reduced LV filling and cardiac output (CO) (Pinsky, 2002, 2007; Sibbald & Driedger, 1983). Due to ventricular interdependence superficial myocardial fibers enrich both LV and RV. As a result, the tw ...
Pericardial diseases
... with pericardial effusions. Under normal conditions, the intrapericardial pressure varies between - 4 and + 4 mmHg during the respiratory cycle. The right and left ventricular diastolic pressures exceed by several mm Hg the intrapericardial pressure. 3,8 The accumulation of pericardial fluid leads t ...
... with pericardial effusions. Under normal conditions, the intrapericardial pressure varies between - 4 and + 4 mmHg during the respiratory cycle. The right and left ventricular diastolic pressures exceed by several mm Hg the intrapericardial pressure. 3,8 The accumulation of pericardial fluid leads t ...
Valvular Heart Disease in Patients with Prolactinomas on
... Prolactinomas are pituitary adenomas that express and secrete prolactin (PRL) in varying degrees, almost invariably benign but often clinically significant [10]. They constitute 40% of all pituitary tumors [10-12]. Is the most frequent secreting pituitary tumor [11]. The estimated prevalence of clin ...
... Prolactinomas are pituitary adenomas that express and secrete prolactin (PRL) in varying degrees, almost invariably benign but often clinically significant [10]. They constitute 40% of all pituitary tumors [10-12]. Is the most frequent secreting pituitary tumor [11]. The estimated prevalence of clin ...
cardiovascular development of the preterm infant
... Every year there are around 16 million infants born preterm across the world. That number is equivalent to the entire population of the Netherlands and is increasing worldwide. In high-income countries this rise is partly due to the more frequent use of assisted reproductive technology like in-vitro ...
... Every year there are around 16 million infants born preterm across the world. That number is equivalent to the entire population of the Netherlands and is increasing worldwide. In high-income countries this rise is partly due to the more frequent use of assisted reproductive technology like in-vitro ...
Assessment of longitudinal left ventricular systolic function by
... mean age 48±9 years) with newly diagnosed and never treated mild-to-moderate hypertension and 48 normotensive control subjects (26 men and 22 women; mean age 46±9 years) in this cross-sectional and observational study. Subjects with obesity (BMI>30), diabetes mellitus, regional wall motion abnormali ...
... mean age 48±9 years) with newly diagnosed and never treated mild-to-moderate hypertension and 48 normotensive control subjects (26 men and 22 women; mean age 46±9 years) in this cross-sectional and observational study. Subjects with obesity (BMI>30), diabetes mellitus, regional wall motion abnormali ...
Natriuretic peptides and atrial fibrillation
... Atrial fibrillation (AF) is the most common arrhythmia in the medical practice, it is associated with an increased total and cardiovascular mortality, as well as cardiovascular morbidity, including stroke and heart failure. AF is encountered in different medical specialties including cardiology, fam ...
... Atrial fibrillation (AF) is the most common arrhythmia in the medical practice, it is associated with an increased total and cardiovascular mortality, as well as cardiovascular morbidity, including stroke and heart failure. AF is encountered in different medical specialties including cardiology, fam ...
Coronary artery disease
Coronary artery disease (CAD), also known as ischemic heart disease (IHD), atherosclerotic heart disease, atherosclerotic cardiovascular disease, and coronary heart disease, is a group of diseases that includes: stable angina, unstable angina, myocardial infarction, and sudden coronary death. It is within the group of cardiovascular diseases of which it is the most common type. A common symptom is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw. Occasionally it may feel like heartburn. Usually symptoms occur with exercise or emotional stress, last less than a few minutes, and gets better with rest. Shortness of breath may also occur and sometimes no symptoms are present. The first sign is occasionally a heart attack. Other complications include heart failure or an irregular heartbeat.Risk factors include: high blood pressure, smoking, diabetes, lack of exercise, obesity, high blood cholesterol, poor diet, and excessive alcohol, among others. Other risks include depression. The underlying mechanism involves atherosclerosis of the arteries of the heart. A number of tests may help with diagnoses including: electrocardiogram, cardiac stress testing, coronary computed tomographic angiography, and coronary angiogram, among others.Prevention is by eating a healthy diet, regular exercise, maintaining a healthy weight and not smoking. Sometimes medication for diabetes, high cholesterol, or high blood pressure are also used. There is limited evidence for screening people who are at low risk and do not have symptoms. Treatment involves the same measures as prevention. Additional medications such as antiplatelets including aspirin, beta blockers, or nitroglycerin may be recommended. Procedures such as percutaneous coronary intervention (PCI) or coronary artery bypass surgery (CABG) may be used in severe disease. In those with stable CAD it is unclear if PCI or CABG in addition to the other treatments improve life expectancy or decreases heart attack risk.In 2013 CAD was the most common cause of death globally, resulting in 8.14 million deaths (16.8%) up from 5.74 million deaths (12%) in 1990. The risk of death from CAD for a given age has decreased between 1980 and 2010 especially in the developed world. The number of cases of CAD for a given age has also decreased between 1990 and 2010. In the United States in 2010 about 20% of those over 65 had CAD, while it was present in 7% of those 45 to 64, and 1.3% of those 18 to 45. Rates are higher among men than women of a given age.