Mechanisms of Atrial Paralysis due to Atrial Fibrillation
... Early studies on atrial pathology in AF patients showed diffuse fibrosis, loss of contractile material, and disruption of the normal cellular ultrastructure/'"'" These changes were suggested to serve as a substrate of AF and to underlie the loss of atrial contractility. Mary-Rabine et al. reported d ...
... Early studies on atrial pathology in AF patients showed diffuse fibrosis, loss of contractile material, and disruption of the normal cellular ultrastructure/'"'" These changes were suggested to serve as a substrate of AF and to underlie the loss of atrial contractility. Mary-Rabine et al. reported d ...
2012 HRS/EHRA/ECAS Expert Consensus Statement on Catheter
... In 2007, an initial Consensus Statement on Catheter and Surgical AF Ablation was developed as a joint effort of the Heart Rhythm Society, the European Heart Rhythm Association, and the European Cardiac Arrhythmia Society.e1 The 2007 document was also developed in collaboration with the Society of Th ...
... In 2007, an initial Consensus Statement on Catheter and Surgical AF Ablation was developed as a joint effort of the Heart Rhythm Society, the European Heart Rhythm Association, and the European Cardiac Arrhythmia Society.e1 The 2007 document was also developed in collaboration with the Society of Th ...
Pathophysiological Mechanisms of Atrial Fibrillation: A Translational
... Hypertension is found in 60 – 80% of AF patients (396). Hypertension is an independent predictor of AF (581), and it contributes to AF progression. Vascular disease, and most notably coronary artery disease, is found in one-fourth to one-third of AF patients in surveys (396, 416), and may be associa ...
... Hypertension is found in 60 – 80% of AF patients (396). Hypertension is an independent predictor of AF (581), and it contributes to AF progression. Vascular disease, and most notably coronary artery disease, is found in one-fourth to one-third of AF patients in surveys (396, 416), and may be associa ...
Systematic review of intraoperative ablation for the treatment of atrial
... Safety and Efficacy Classification............................................................................................................. v Review Group Membership ..................................................................................................................... vi ...
... Safety and Efficacy Classification............................................................................................................. v Review Group Membership ..................................................................................................................... vi ...
Left Ventricular Septal and Left Ventricular Apical Pacing
... have been studied most intensively, but results of the various studies are mixed.3,4 Experimental and clinical studies indicate that LV pacing sites often render better hemodynamic performance than RV pacing sites.5–7 In a previous acute canine study, we observed hemodynamic benefits by LV septal an ...
... have been studied most intensively, but results of the various studies are mixed.3,4 Experimental and clinical studies indicate that LV pacing sites often render better hemodynamic performance than RV pacing sites.5–7 In a previous acute canine study, we observed hemodynamic benefits by LV septal an ...
Atrial fibrillation - European Society of Cardiology
... or to describe the last episode. In this report it will be used to describe atrial fibrillation in which the episodes last for several days or years. The term acute may describe an episode of atrial fibrillation related to an acute curable cause[9] and is also used to describe an attack of atrial fi ...
... or to describe the last episode. In this report it will be used to describe atrial fibrillation in which the episodes last for several days or years. The term acute may describe an episode of atrial fibrillation related to an acute curable cause[9] and is also used to describe an attack of atrial fi ...
atrial fibrillation
... lifestyle risk factors such as alcohol and or obesity. It is a significant cause of morbidity and mortality, the presence of atrial fibrillation increases the risk of developing heart failure and thromboembolism, and it is a common cause of stroke. Treatment of atrial fibrillation is rate and/or rhy ...
... lifestyle risk factors such as alcohol and or obesity. It is a significant cause of morbidity and mortality, the presence of atrial fibrillation increases the risk of developing heart failure and thromboembolism, and it is a common cause of stroke. Treatment of atrial fibrillation is rate and/or rhy ...
atrial arrhythmogenesis during myocardial infarction
... AF and left ventricular dysfunction with acute myocardial infarction ............................... 55 ...
... AF and left ventricular dysfunction with acute myocardial infarction ............................... 55 ...
The Sarcoplasmic Reticulum and the Evolution of the Vertebrate Heart
... Ca2⫹ entry may overcompensate, thus SR contribution to force may be underestimated for some species. Additionally, stimulation frequency and temperature (both acclimation and experimental) influence the effect of ryanodine on contractile force, which complicates interpretation. Nevertheless, SR depe ...
... Ca2⫹ entry may overcompensate, thus SR contribution to force may be underestimated for some species. Additionally, stimulation frequency and temperature (both acclimation and experimental) influence the effect of ryanodine on contractile force, which complicates interpretation. Nevertheless, SR depe ...
ACCF/ASE/AHA/ASNC/HFSA/HRS/SCAI/SCCM/SCCT/SCMR 2011
... physicians caring for patients with cardiovascular diseases. The process is based on current understanding of the technical capabilities of the imaging modalities examined. Although impossible to be entirely comprehensive given the wide diversity of clinical disease, the indications are meant to ide ...
... physicians caring for patients with cardiovascular diseases. The process is based on current understanding of the technical capabilities of the imaging modalities examined. Although impossible to be entirely comprehensive given the wide diversity of clinical disease, the indications are meant to ide ...
Characterization of Atrial Repolarization Alternans and
... of interest had an elusive nature. This thesis describes the physiological motivation for this study, introduces the signal processing techniques developed to remove interferences and extract the parameters of interest, and proposes an interpretation of the results obtained. The present thesis is ai ...
... of interest had an elusive nature. This thesis describes the physiological motivation for this study, introduces the signal processing techniques developed to remove interferences and extract the parameters of interest, and proposes an interpretation of the results obtained. The present thesis is ai ...
Structural And Functional Remodeling Of The Left Atrium: Clinical
... CHF is an established risk factor for AF with odds ratio of 4.5 to 5.9 as seen in the Framingham study.51 This relationship can be explained by the presence of common risk factors in both conditions.57 In addition, the prevalence for AF in CHF is known to increase with increased severity of pump fai ...
... CHF is an established risk factor for AF with odds ratio of 4.5 to 5.9 as seen in the Framingham study.51 This relationship can be explained by the presence of common risk factors in both conditions.57 In addition, the prevalence for AF in CHF is known to increase with increased severity of pump fai ...
atrial fibrillation
... Atrial fibrillation is treated in order to increase the quality of life, decrease the frequency and intensity of symptoms, and decrease the risk of complications and death. Unfortunately, there is no conclusive evidence that the therapies available reduce the mortality rate associated with atrial fi ...
... Atrial fibrillation is treated in order to increase the quality of life, decrease the frequency and intensity of symptoms, and decrease the risk of complications and death. Unfortunately, there is no conclusive evidence that the therapies available reduce the mortality rate associated with atrial fi ...
Atrial Fibrillation in Children
... The diagnosis of atrial fibrillation in the neonate is simpler than in the fetus due to the convenience of direct access to the patient. A 12-lead electrocardiogram can obtained and diagnostic accuracy greatly increased. Rarely is a neonatal invasive electrophysiological study indicated, but esophag ...
... The diagnosis of atrial fibrillation in the neonate is simpler than in the fetus due to the convenience of direct access to the patient. A 12-lead electrocardiogram can obtained and diagnostic accuracy greatly increased. Rarely is a neonatal invasive electrophysiological study indicated, but esophag ...
The pulmonary hemodynamics and exercise in
... progression of pulmonary hypertension in COPD is slow (21) , it is shown to be a strong prognostic marker in patients with and without long-term oxygen therapy (22, 23). As mentioned, only a few patients have pulmonary hypertension at rest. However, when cardiac output increases during exercise, a f ...
... progression of pulmonary hypertension in COPD is slow (21) , it is shown to be a strong prognostic marker in patients with and without long-term oxygen therapy (22, 23). As mentioned, only a few patients have pulmonary hypertension at rest. However, when cardiac output increases during exercise, a f ...
Atrial Remodeling and Atrial Fibrillation
... strongly promotes AF by stabilizing atrial reentrant rotors,41 and clinical AF often begins under vagotonic conditions.42 ATR alters the IKACh system such that agonist-stimulated IKACh (as occurs with vagal activation) is reduced, but agonistindependent (“constitutive”) IKACh (IKACh,c) activity is e ...
... strongly promotes AF by stabilizing atrial reentrant rotors,41 and clinical AF often begins under vagotonic conditions.42 ATR alters the IKACh system such that agonist-stimulated IKACh (as occurs with vagal activation) is reduced, but agonistindependent (“constitutive”) IKACh (IKACh,c) activity is e ...
Atrial Septal Defect and Atrial Fibrillation: The Known and Unknown
... ostium primum defect belongs to the atrioventricular (AV) septal defects (also known as endocardial cushion defects), which may include a large ventricular septal defect and a common AV valve in its complete form. The sinus venosus defect is usually located at the junction of the right atrium (RA) a ...
... ostium primum defect belongs to the atrioventricular (AV) septal defects (also known as endocardial cushion defects), which may include a large ventricular septal defect and a common AV valve in its complete form. The sinus venosus defect is usually located at the junction of the right atrium (RA) a ...
Catheter Ablation as Treatment for Atrial Fibrillation
... common focal trigger of AF appears to be located within the cardiac muscle that extends into the pulmonary veins. AF accounts for approximately one-third of hospitalizations for cardiac rhythm disturbances. Symptoms of AF (e.g., palpitations, decreased exercise tolerance, dyspnea) are primarily rela ...
... common focal trigger of AF appears to be located within the cardiac muscle that extends into the pulmonary veins. AF accounts for approximately one-third of hospitalizations for cardiac rhythm disturbances. Symptoms of AF (e.g., palpitations, decreased exercise tolerance, dyspnea) are primarily rela ...
Atrial Flutter: Mechanisms, Clinical Features and Management
... Surprisingly the perception of palpitations is infrequent. The most encountered signs are fatigue, exertional dyspnea and general discomfort. However this intolerance is often mild. Certain forms are even asymptomatic. Conversely the occurrence of atrial flutter in severe cardiac patients may be acc ...
... Surprisingly the perception of palpitations is infrequent. The most encountered signs are fatigue, exertional dyspnea and general discomfort. However this intolerance is often mild. Certain forms are even asymptomatic. Conversely the occurrence of atrial flutter in severe cardiac patients may be acc ...
Atrial pressure and secretion of atrial natriuretic factor into
... diuretic drugs, vasodilating agents, digitalis, beta-adrenergic blocking agents and calcium channel blockers. Patients were premedicated with meperidine hydrochloride, promethazine hydrochloride or diazepam before catheterization. The study group consisted of 34 patients (20 men and 14 women) with a ...
... diuretic drugs, vasodilating agents, digitalis, beta-adrenergic blocking agents and calcium channel blockers. Patients were premedicated with meperidine hydrochloride, promethazine hydrochloride or diazepam before catheterization. The study group consisted of 34 patients (20 men and 14 women) with a ...
Pulmonary arterial hypertension in children
... with a very heterogeneous involvement in the pulmonary parenchyma (consistent with the late presentation as well as significant palliative response with intravenous epoprostenol). This variability in clinical severity and histopathology is consistent with the marked biological variability that occur ...
... with a very heterogeneous involvement in the pulmonary parenchyma (consistent with the late presentation as well as significant palliative response with intravenous epoprostenol). This variability in clinical severity and histopathology is consistent with the marked biological variability that occur ...
approach to cyanotic congenital
... 3. Physiological classification - PS / No PS 4. Hemodynamic information - PA pressure etc. 5. Assessment of Ventricular function 6. Decides the type of repair needed Pediatric echocardiography must be performed by skilled personnel, since errors are possible Hence provisional diagnosis must be m ...
... 3. Physiological classification - PS / No PS 4. Hemodynamic information - PA pressure etc. 5. Assessment of Ventricular function 6. Decides the type of repair needed Pediatric echocardiography must be performed by skilled personnel, since errors are possible Hence provisional diagnosis must be m ...
Development and validation of an algorithm to
... right atrial flutter, “lower loop reentry” has been the term proposed for counterclockwise reentry around the inferior vena cava where the anterior arm of the circuit is the inferior vena cava - tricuspid valve isthmus and the posterior arm is the low posterior right atrium wall with conduction acro ...
... right atrial flutter, “lower loop reentry” has been the term proposed for counterclockwise reentry around the inferior vena cava where the anterior arm of the circuit is the inferior vena cava - tricuspid valve isthmus and the posterior arm is the low posterior right atrium wall with conduction acro ...
Endocardial mapping of atrial fibrillation in the human right atrium
... models[10–16] and humans[16–24] and has provided insights on the arrhythmia mechanism, but studies have been limited by the resolution of the mapping system used[25], the extent of atrium mapped[20], or the need for the procedure to be performed after thoracotomy[20–22], which has an associated morb ...
... models[10–16] and humans[16–24] and has provided insights on the arrhythmia mechanism, but studies have been limited by the resolution of the mapping system used[25], the extent of atrium mapped[20], or the need for the procedure to be performed after thoracotomy[20–22], which has an associated morb ...
Congenital Anomalies Involving the Coronary
... of blood from the coronary sinus, the blood being carried into the developing pulmonary venous system. Later, as the involved pulmonary vein became incorporated into the left atrium, the resulting gross picture was that of a venous channel running between the left atrium and the coronary sinus. The ...
... of blood from the coronary sinus, the blood being carried into the developing pulmonary venous system. Later, as the involved pulmonary vein became incorporated into the left atrium, the resulting gross picture was that of a venous channel running between the left atrium and the coronary sinus. The ...
Mitral insufficiency
Mitral insufficiency (MI), mitral regurgitation or mitral incompetence is a disorder of the heart in which the mitral valve does not close properly when the heart pumps out blood. It is the abnormal leaking of blood backwards from the left ventricle, through the mitral valve, into the left atrium, when the left ventricle contracts, i.e. there is regurgitation of blood back into the left atrium. MI is the most common form of valvular heart disease.