Diagnosis of Anomalous Coronary Arteries in 64-MDCT
... it is not accurate to measure the length and depth of myocardial bridging. The slab thickness is also an important factor to display the images clearly. An anomalous origin and course of the coronary arteries can be benign or life threatening. The prevalence of coronary artery anomalies is about 0.3 ...
... it is not accurate to measure the length and depth of myocardial bridging. The slab thickness is also an important factor to display the images clearly. An anomalous origin and course of the coronary arteries can be benign or life threatening. The prevalence of coronary artery anomalies is about 0.3 ...
Ticagrelor Protects the Heart Against Reperfusion Injury and
... trial.7,8 However, a recent multicenter, randomized, double-blind clinical trial did not show a clear clinical benefit in patients with STEMI receiving ticagrelor en route to the hospital versus in the catheterization laboratory.16 As the study was not powered for benefit on cardiovascular events, i ...
... trial.7,8 However, a recent multicenter, randomized, double-blind clinical trial did not show a clear clinical benefit in patients with STEMI receiving ticagrelor en route to the hospital versus in the catheterization laboratory.16 As the study was not powered for benefit on cardiovascular events, i ...
Chow Sample Chap 1
... through the AV node to the His-Purkinje system, and then to the ventricles. The His-Purkinje system comprises myocardial cells that are specialized for rapid conduction. Its anatomic components are (in order of activation) the His bundle, the bundle branches (right and left) and the Purkinje fibers. ...
... through the AV node to the His-Purkinje system, and then to the ventricles. The His-Purkinje system comprises myocardial cells that are specialized for rapid conduction. Its anatomic components are (in order of activation) the His bundle, the bundle branches (right and left) and the Purkinje fibers. ...
REIMBURSEMENT ISSUES
... Gender: CVD more common in men until women reach menopause Age: risk increases with age Family history Heredity: certain ethnic groups Compounding diseases: type 2 diabetes, hypertension, metabolic syndrome Blood cholesterol profile: high total and LDL and low HDL cholesterol ...
... Gender: CVD more common in men until women reach menopause Age: risk increases with age Family history Heredity: certain ethnic groups Compounding diseases: type 2 diabetes, hypertension, metabolic syndrome Blood cholesterol profile: high total and LDL and low HDL cholesterol ...
A 4-Tiered Classification of Left Ventricular Hypertrophy
... Background—Left ventricular hypertrophy (LVH) is traditionally classified as concentric or eccentric, based on the ratio of LV wall thickness to chamber dimension. We propose a 4-tiered LVH classification based on LV concentricity0.67 (mass/end-diastolic volume0.67) and indexed LV end-diastolic volu ...
... Background—Left ventricular hypertrophy (LVH) is traditionally classified as concentric or eccentric, based on the ratio of LV wall thickness to chamber dimension. We propose a 4-tiered LVH classification based on LV concentricity0.67 (mass/end-diastolic volume0.67) and indexed LV end-diastolic volu ...
morphological study of coronary sinus in human cadaveric
... Background: The coronary sinus is a dilated venous channel opening into the right atrium of the heart. The coronary venous system has gained importance in recent years for electrophysiological procedures like arrhythmia ablation, biventricular pacing and implantation of cardiac pacemakers. The prese ...
... Background: The coronary sinus is a dilated venous channel opening into the right atrium of the heart. The coronary venous system has gained importance in recent years for electrophysiological procedures like arrhythmia ablation, biventricular pacing and implantation of cardiac pacemakers. The prese ...
insight review articles
... organs (including the kidneys, mesenteric circulation and the heart itself), potentially leading to infarction. The thromboembolic risk is reduced by administration of oral anticoagulant drugs, but at the price of an increased risk of bleeding complications. These considerations probably account for ...
... organs (including the kidneys, mesenteric circulation and the heart itself), potentially leading to infarction. The thromboembolic risk is reduced by administration of oral anticoagulant drugs, but at the price of an increased risk of bleeding complications. These considerations probably account for ...
Pulmonary arterial hypertension in children
... system (table 1). This classification system categorises pulmonary vascular disease by common clinical features. This classification reflects the recent advances in the understanding of pulmonary hypertensive diseases as well as recognising the similarity between primary pulmonary hypertension and p ...
... system (table 1). This classification system categorises pulmonary vascular disease by common clinical features. This classification reflects the recent advances in the understanding of pulmonary hypertensive diseases as well as recognising the similarity between primary pulmonary hypertension and p ...
Crawford Current Cardiology Edition 2
... redistribution of body fluids from the lower extremities into the vascular space and back to the heart, resulting in volume overload; it suggests a more severe condition. Third is orthopnea, a dyspnea that occurs immediately on assuming the recumbent position. The mild increase in venous return (cau ...
... redistribution of body fluids from the lower extremities into the vascular space and back to the heart, resulting in volume overload; it suggests a more severe condition. Third is orthopnea, a dyspnea that occurs immediately on assuming the recumbent position. The mild increase in venous return (cau ...
Paroxysmal Supraventricular Tachycardia
... have been retrogradely activated by atrial echoes during the tachycardia. In addition, refractory periods were determined by the extrastimulus method. Results All patients were in sinus rhythm at the beginning of the study and no abnormalities of conduction were present (table 1). In each patient, s ...
... have been retrogradely activated by atrial echoes during the tachycardia. In addition, refractory periods were determined by the extrastimulus method. Results All patients were in sinus rhythm at the beginning of the study and no abnormalities of conduction were present (table 1). In each patient, s ...
New Insights into Mechanisms of Atrial Fibrillation
... Triggers of atrial fibrillation as a therapeutic target Optical mapping studies documented the location of preferential re-entry circuits that occur in the pulmonary vein region in canine models of AF (Arora et al. 2003). Electrophysiological studies in patients with paroxysmal atrial fibrillation f ...
... Triggers of atrial fibrillation as a therapeutic target Optical mapping studies documented the location of preferential re-entry circuits that occur in the pulmonary vein region in canine models of AF (Arora et al. 2003). Electrophysiological studies in patients with paroxysmal atrial fibrillation f ...
quantification of left ventricular myocardial collagen system in
... large diameter in the aging heart21. These and the present results suggest a continuous formation of new collagen fibers in the ventricular wall, after birth. However, the exact mechanism responsible for the myocardial fibrosis in the senescent myocardium is unclear Fibroblasts are the cardiac cells ...
... large diameter in the aging heart21. These and the present results suggest a continuous formation of new collagen fibers in the ventricular wall, after birth. However, the exact mechanism responsible for the myocardial fibrosis in the senescent myocardium is unclear Fibroblasts are the cardiac cells ...
Congential Anomalies of the Coronary Arteries
... small and moderate fistulae slowly increase in size, although there may be little change over a 10 to 15 year period. • Onset of dyspnea, heart failure, and angina can occur in young patients with large fistula • The maximum incidence of congestive heart failure occurs in the fifth and sixth decades ...
... small and moderate fistulae slowly increase in size, although there may be little change over a 10 to 15 year period. • Onset of dyspnea, heart failure, and angina can occur in young patients with large fistula • The maximum incidence of congestive heart failure occurs in the fifth and sixth decades ...
Techniques for Ventricular Repolarization Instability Assessment
... tachycardia (VT) or ventricular fibrillation (VF), are the cause of most SCDs [9], whereas only a small percentage of cases of SCD are due to bradycardia. Three main factors have been identified to have a major role in the initiation and maintenance of arrhythmias: substrate, triggers, and modulator ...
... tachycardia (VT) or ventricular fibrillation (VF), are the cause of most SCDs [9], whereas only a small percentage of cases of SCD are due to bradycardia. Three main factors have been identified to have a major role in the initiation and maintenance of arrhythmias: substrate, triggers, and modulator ...
Scorpion Sting REVIEW ARTICLE Dr. H.S.Bawaskar Dr. P.H.Bawaskar
... world 13. Scientists are keen in treating reporting and studying the ...
... world 13. Scientists are keen in treating reporting and studying the ...
Spotlight on atrial fibrillation—the `complete arrhythmia`
... demonstrated the role of AF in causing the associated irregularity in ventricular contraction by cutting the bundle of His, after which the atria continued to fibrillate but the ventricles began to beat regularly [7]. Lewis was the first to suggest that the very fine diastolic oscillations on ECG re ...
... demonstrated the role of AF in causing the associated irregularity in ventricular contraction by cutting the bundle of His, after which the atria continued to fibrillate but the ventricles began to beat regularly [7]. Lewis was the first to suggest that the very fine diastolic oscillations on ECG re ...
Coronary arterial anomalies and variations
... In what measure these anatomical variations can influence on the pathological process; and do they have a predominant or auxiliary role in the disease process? In order to produce unfavorable clinical conditions, are additional factors such as spasm, compression, hypertrophy, dysrhythmias or clottin ...
... In what measure these anatomical variations can influence on the pathological process; and do they have a predominant or auxiliary role in the disease process? In order to produce unfavorable clinical conditions, are additional factors such as spasm, compression, hypertrophy, dysrhythmias or clottin ...
PDF Article
... generation of force while increasing diastolic stiffness. Subsequent alterations in the concentration of collagen, the proportion of type I and III collagens, or the alignment of collagen and muscle fibers, or both, will determine whether this adaptation becomes pathologic (6,7). In other circumstan ...
... generation of force while increasing diastolic stiffness. Subsequent alterations in the concentration of collagen, the proportion of type I and III collagens, or the alignment of collagen and muscle fibers, or both, will determine whether this adaptation becomes pathologic (6,7). In other circumstan ...
Increased Connective Tissue Growth Factor Relative
... Key Words: extracellular matrix 䡲 hypertrophy 䡲 cardiac function 䡲 connective tissue growth factor 䡲 natriuretic peptide ...
... Key Words: extracellular matrix 䡲 hypertrophy 䡲 cardiac function 䡲 connective tissue growth factor 䡲 natriuretic peptide ...
Pulmonary circulation at exercise.
... conceived a vascular “waterfall” or “Starling resistor” model made of parallel collapsible vessels with a distribution of non-zero and positive closing pressures (174). The waterfall analogy refers to the fact that the flow rate (Q) over a waterfall is independent of its height (the pressure differe ...
... conceived a vascular “waterfall” or “Starling resistor” model made of parallel collapsible vessels with a distribution of non-zero and positive closing pressures (174). The waterfall analogy refers to the fact that the flow rate (Q) over a waterfall is independent of its height (the pressure differe ...
CURRICULUM VITAE John Alex Elefteriades, M.D. Date of Revision
... of Medicine. He trained at Yale in both general surgery and cardiothoracic surgery. After completing his training, he joined the faculty at the Yale University School of Medicine. He performs all aspects of adult cardiac and thoracic surgery. He is a recognized authority in interventions for the fai ...
... of Medicine. He trained at Yale in both general surgery and cardiothoracic surgery. After completing his training, he joined the faculty at the Yale University School of Medicine. He performs all aspects of adult cardiac and thoracic surgery. He is a recognized authority in interventions for the fai ...
Rate control in Atrial fibrillation Groenveld, Hessel Folkert
... gave it the term ‘delirium cordis’, due to the irregular arterial pulse.26 In 1908 the first electrocardiogram of AF was published.27 Treatment options at that time were limited. To reduce the ventricular rate digoxin was given; the reduction of ventricular rate due to digoxin was already discovered ...
... gave it the term ‘delirium cordis’, due to the irregular arterial pulse.26 In 1908 the first electrocardiogram of AF was published.27 Treatment options at that time were limited. To reduce the ventricular rate digoxin was given; the reduction of ventricular rate due to digoxin was already discovered ...
the bronchial arteries in pulmonary emphysema
... left basal bronchopneupulmonary emphymonia. Enlarged right sema; cor pulmonale Congested ventricle. and congestive carliver and spleen diac failure ...
... left basal bronchopneupulmonary emphymonia. Enlarged right sema; cor pulmonale Congested ventricle. and congestive carliver and spleen diac failure ...
Automatic Detection of Congestive Heart Failure and Atrial
... MIT-BIH NSR, the BIDMC CHF, the CHF RRI, we calculated the sample entropy with 16 beat RRI time series, which was shifted by every beat. Fig. 1(b) shows the statistical value distribution of the SampEn distribution values from 79 same subjects from the same databases as shown for normalized RMSSD. A ...
... MIT-BIH NSR, the BIDMC CHF, the CHF RRI, we calculated the sample entropy with 16 beat RRI time series, which was shifted by every beat. Fig. 1(b) shows the statistical value distribution of the SampEn distribution values from 79 same subjects from the same databases as shown for normalized RMSSD. A ...
full text pdf
... Abstract: The spatial QRS/T angle (QRS/T) has been identified as a strong and independent predictor of adverse cardiac events. QRS/T can be determined from the electrocardiogram (ECG) by matrix transformation methods or formula which uses a combination of net QRS and T-wave amplitudes (QRS/Tsimpl ...
... Abstract: The spatial QRS/T angle (QRS/T) has been identified as a strong and independent predictor of adverse cardiac events. QRS/T can be determined from the electrocardiogram (ECG) by matrix transformation methods or formula which uses a combination of net QRS and T-wave amplitudes (QRS/Tsimpl ...
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.