Ventricular Tachycardia Rate and Morphology Determine Energy
... initially taken to be VT. The data presented in the results represent actual events; if a lower-current shock was omitted in any patient, no entry was made for that current in that patient. The criteria for classification of arrhythmias were based on the analysis of the 10 cycles preceding the shock ...
... initially taken to be VT. The data presented in the results represent actual events; if a lower-current shock was omitted in any patient, no entry was made for that current in that patient. The criteria for classification of arrhythmias were based on the analysis of the 10 cycles preceding the shock ...
Electrocardiographic changes in 1000 highly trained junior elite
... to attending physicians and sporting bodies because most non-traumatic sudden deaths in young athletes are due to inherited cardiovascular disorders.4 5 Although the incidence of sudden death in athletes from these disorders is rare, the steady trickle of reports of such events has led many sporting ...
... to attending physicians and sporting bodies because most non-traumatic sudden deaths in young athletes are due to inherited cardiovascular disorders.4 5 Although the incidence of sudden death in athletes from these disorders is rare, the steady trickle of reports of such events has led many sporting ...
PERICARDIAL EFFUSION IN CANINE PATIENTS
... tamponade; while less frequent, atrial or ventricular tachyarrhythmias may occur as well.2 MANAGEMENT Pericardiocentesis When cardiac tamponade is present, immediate pericardiocentesis is indicated. Reduction of pericardial pressure by removal of fluid results in greater cardiac output and a decreas ...
... tamponade; while less frequent, atrial or ventricular tachyarrhythmias may occur as well.2 MANAGEMENT Pericardiocentesis When cardiac tamponade is present, immediate pericardiocentesis is indicated. Reduction of pericardial pressure by removal of fluid results in greater cardiac output and a decreas ...
Guidelines for the Echocardiographic Assessment of the Right Heart
... values of right heart size and function. In all studies, the sonographer and physician should examine the right heart using multiple acoustic windows, and the report should represent an assessment based on qualitative and quantitative parameters. The parameters to be performed and reported should in ...
... values of right heart size and function. In all studies, the sonographer and physician should examine the right heart using multiple acoustic windows, and the report should represent an assessment based on qualitative and quantitative parameters. The parameters to be performed and reported should in ...
Evaluation of the Role of IKACh in Atrial Fibrillation Using a Mouse
... products were visualized by gel electrophoresis (2% agarose) followed by ethidium bromide staining. ...
... products were visualized by gel electrophoresis (2% agarose) followed by ethidium bromide staining. ...
Left Atrial Diastolic Dysfunction And Pulmonary Venous
... Objective: The purpose of this study was to investigate the clinical, hemodynamic and echocardiographic features of left atrial (LA) diastolic dysfunction. Methods: Patients with atrial fibrillation (AF), severe LA enlargement, and pulmonary venous hypertension (PVH, Group 1) were compared to patien ...
... Objective: The purpose of this study was to investigate the clinical, hemodynamic and echocardiographic features of left atrial (LA) diastolic dysfunction. Methods: Patients with atrial fibrillation (AF), severe LA enlargement, and pulmonary venous hypertension (PVH, Group 1) were compared to patien ...
Guidelines ESC VD 2010 - Working Group for Echocardiography
... values of right heart size and function. In all studies, the sonographer and physician should examine the right heart using multiple acoustic windows, and the report should represent an assessment based on qualitative and quantitative parameters. The parameters to be performed and reported should in ...
... values of right heart size and function. In all studies, the sonographer and physician should examine the right heart using multiple acoustic windows, and the report should represent an assessment based on qualitative and quantitative parameters. The parameters to be performed and reported should in ...
When to implant an ICD and which one
... 1. ICD recommendations are combined into a single list because of overlap between primary and secondary indications. 2. Primary prevention ICD indications in nonischemic cardiomyopathy are clarified using data from SCD-HeFT (i.e., ischemic and nonischemic cardiomyopathies and LVEF ≤35%, NYHA II-III) ...
... 1. ICD recommendations are combined into a single list because of overlap between primary and secondary indications. 2. Primary prevention ICD indications in nonischemic cardiomyopathy are clarified using data from SCD-HeFT (i.e., ischemic and nonischemic cardiomyopathies and LVEF ≤35%, NYHA II-III) ...
Pericardial Diseases: Tamponade and constriction
... respiratory cycle demonstrating pressures of approximately –6 mm Hg at end inspiration and –3 mm Hg at end expiration (NB – as measured by a fluid filled, non-balloon tipped catheter). It is the lowering of intrathoracic and pericardial pressure during inspiration that permits increased filling of t ...
... respiratory cycle demonstrating pressures of approximately –6 mm Hg at end inspiration and –3 mm Hg at end expiration (NB – as measured by a fluid filled, non-balloon tipped catheter). It is the lowering of intrathoracic and pericardial pressure during inspiration that permits increased filling of t ...
Relationships Between Right Ventricular Function, Body
... using the chi-square test, unpaired Student t test, or analysis of variance. Logistic regression analysis was used to identify the predictors of cachexia. The impact on survival was tested by using the Cox proportional hazards model. Results A total of 408 predominantly male subjects with chronic HF ...
... using the chi-square test, unpaired Student t test, or analysis of variance. Logistic regression analysis was used to identify the predictors of cachexia. The impact on survival was tested by using the Cox proportional hazards model. Results A total of 408 predominantly male subjects with chronic HF ...
Independence of Myocardial Oxygen Consumption from Pressure
... by the environment on the ventricle during diastole. The net external mechanical work output is therefore equal to the external mechanical work performed during systole, minus the mechanical work paid back from outside to the ventricle during diastole. This net work is represented by the area within ...
... by the environment on the ventricle during diastole. The net external mechanical work output is therefore equal to the external mechanical work performed during systole, minus the mechanical work paid back from outside to the ventricle during diastole. This net work is represented by the area within ...
Percutaneous Mitral Valve Repair
... retrograde flow in the heart, which increasingly contributes to the positive feedback loop. Therefore valvular repair should be recommended for patients with mild mitral regurgitation because the condition will become progressively worse with time. (1) However, currently the guidelines recommend sur ...
... retrograde flow in the heart, which increasingly contributes to the positive feedback loop. Therefore valvular repair should be recommended for patients with mild mitral regurgitation because the condition will become progressively worse with time. (1) However, currently the guidelines recommend sur ...
Myocarditis Presenting with Ventricular Arrhythmias
... tachycardias and ventricular ectopies and tachycardias. Echocardiography may reveal overt systolic dysfunction or a reduction of peak systolic velocities at TDI; moreover, regional wall motion abnormalities and diastolic dysfunction may be found (Cooper, 2009; Feldman et al. 2000). Therefore, this d ...
... tachycardias and ventricular ectopies and tachycardias. Echocardiography may reveal overt systolic dysfunction or a reduction of peak systolic velocities at TDI; moreover, regional wall motion abnormalities and diastolic dysfunction may be found (Cooper, 2009; Feldman et al. 2000). Therefore, this d ...
Supernormal Phase, and Synchronization
... rise to small portable units and to smaller implantable onles. With the latter, the stimulus is standardized and in most types the rate (cycle) is preset and nonadjustable. As yet, there seems slight promise of developing, in the immediate future, a miniature implantable unit such that stimulation w ...
... rise to small portable units and to smaller implantable onles. With the latter, the stimulus is standardized and in most types the rate (cycle) is preset and nonadjustable. As yet, there seems slight promise of developing, in the immediate future, a miniature implantable unit such that stimulation w ...
283 Cardiac Tamponade
... reduction in venous return to the heart. The right atrium and right ventricle become compressed causing impaired diastolic filling, since right sided pressure are lowest in diastole. As less venous blood returns to the right atrium the central venous pressure rises. Impaired right ventricular fillin ...
... reduction in venous return to the heart. The right atrium and right ventricle become compressed causing impaired diastolic filling, since right sided pressure are lowest in diastole. As less venous blood returns to the right atrium the central venous pressure rises. Impaired right ventricular fillin ...
Early right ventricular fibrosis and reduction in - AJP
... Around the time that respiratory dysfunction becomes apparent, so too does cardiac function begin to falter. Careful examination of cardiac function reveals that subclinical dysfunction is often present even earlier in the disease process (33, 54). As in the skeletal muscle, the cardiac manifestatio ...
... Around the time that respiratory dysfunction becomes apparent, so too does cardiac function begin to falter. Careful examination of cardiac function reveals that subclinical dysfunction is often present even earlier in the disease process (33, 54). As in the skeletal muscle, the cardiac manifestatio ...
LEFT VENTRICULAR DIASTOLIC FUNCTIONAL STATUS AFTER
... orating LV diastolic function, but long-term decompensated LV diastolic function was observed. According to these paradoxical results, we attempted to evaluate changes in LV diastolic function three months after CABG in patients without severe LV systolic dysfunction. We found improvement in most LV ...
... orating LV diastolic function, but long-term decompensated LV diastolic function was observed. According to these paradoxical results, we attempted to evaluate changes in LV diastolic function three months after CABG in patients without severe LV systolic dysfunction. We found improvement in most LV ...
Dobutamine stress for evaluation of right ventricular reserve in pulmonary arterial hypertension
... surrogate indicators of RV dysfunction, such as right atrial pressure (RAP) and cardiac output [3–6]. Despite severe elevation of RV afterload in PAH, symptoms of RV failure do not occur at rest until the latter stages of the disease. Thus, it is rational that measurement of RV function under stress ...
... surrogate indicators of RV dysfunction, such as right atrial pressure (RAP) and cardiac output [3–6]. Despite severe elevation of RV afterload in PAH, symptoms of RV failure do not occur at rest until the latter stages of the disease. Thus, it is rational that measurement of RV function under stress ...
Cardiac electrophysiology
... A serious variety of arrhythmia is known as fibrillation. The muscle cells of the heart normally function together, creating a single contraction when stimulated. Fibrillation occurs when the heart muscle begins a quivering motion due to a disunity in contractile cell function. Fibrillation can affe ...
... A serious variety of arrhythmia is known as fibrillation. The muscle cells of the heart normally function together, creating a single contraction when stimulated. Fibrillation occurs when the heart muscle begins a quivering motion due to a disunity in contractile cell function. Fibrillation can affe ...
ACC/AHA/NASPE Practice Guidelines
... Science Advisory and Coordinating Committee in August 2002, and the North American Society for Pacing and Electrophysiology in August 2002. The ACC/AHA Task Force on Practice Guidelines makes every effort to avoid any actual or potential conflicts of interest that might arise as a result of an outsi ...
... Science Advisory and Coordinating Committee in August 2002, and the North American Society for Pacing and Electrophysiology in August 2002. The ACC/AHA Task Force on Practice Guidelines makes every effort to avoid any actual or potential conflicts of interest that might arise as a result of an outsi ...
Syncope Iowa State University
... had a diagnostic yield (both positive and negative results) of 42%. In 30 % of cases, arrhythmias were implicated as the cause (20% with ventricular tachyarrhythmias, 10% with bradyarrhythmias); in 12% arrhythmias did not occur during syncope.6 A syncopal episode must occur during monitoring to make ...
... had a diagnostic yield (both positive and negative results) of 42%. In 30 % of cases, arrhythmias were implicated as the cause (20% with ventricular tachyarrhythmias, 10% with bradyarrhythmias); in 12% arrhythmias did not occur during syncope.6 A syncopal episode must occur during monitoring to make ...
Calibrated integrated backscatter and
... Downloaded from http://openheart.bmj.com/ on May 2, 2017 - Published by group.bmj.com ...
... Downloaded from http://openheart.bmj.com/ on May 2, 2017 - Published by group.bmj.com ...
1 A Stepwise Approach to the Management of Post
... underwent 259 VT ablations in our centre: [145 with ischaemic cardiomyopathy (ICM), 17 with dilated cardiomyopathy (DCM), and 18 with arrythmogenic right ventricular dysplasia (ARVD)]. In this study, we included patients with the following criteria: 1) previous history of myocardial infarct, 2) docu ...
... underwent 259 VT ablations in our centre: [145 with ischaemic cardiomyopathy (ICM), 17 with dilated cardiomyopathy (DCM), and 18 with arrythmogenic right ventricular dysplasia (ARVD)]. In this study, we included patients with the following criteria: 1) previous history of myocardial infarct, 2) docu ...
PREVALENCE OF LEFT VENTRICULAR HYPERTROPHY AND ITS
... who helped me during various phases of this work. Last but not least, I wish to express my utmost gratitude to my wife Amana, my daughters Salha and Samira and my son Imran for their constant tireless encouragement and inspiration during the dark hours of this work. ...
... who helped me during various phases of this work. Last but not least, I wish to express my utmost gratitude to my wife Amana, my daughters Salha and Samira and my son Imran for their constant tireless encouragement and inspiration during the dark hours of this work. ...
Right ventricular ejection fraction response to exercise in
... separated by one picture element from left ventricular activity. Right ventricular ejection fraction was calculated as background-corrected end-diastolic counts minus end-systolic counts divided by end-diastolic counts. Left ventricular ejection fraction was similarly calculated using light penassig ...
... separated by one picture element from left ventricular activity. Right ventricular ejection fraction was calculated as background-corrected end-diastolic counts minus end-systolic counts divided by end-diastolic counts. Left ventricular ejection fraction was similarly calculated using light penassig ...
Hypertrophic cardiomyopathy
Hypertrophic cardiomyopathy (HCM) is a primary disease of the myocardium (the muscle of the heart) in which a portion of the myocardium is hypertrophied (thickened) without any obvious cause, creating functional impairment of the cardiac muscle. It is a leading cause of sudden cardiac death in young athletes.The occurrence of hypertrophic cardiomyopathy is a significant cause of sudden unexpected cardiac death in any age group and as a cause of disabling cardiac symptoms. Younger people are likely to have a more severe form of hypertrophic cardiomyopathy.HCM is frequently asymptomatic until sudden cardiac death, and for this reason some suggest routinely screening certain populations for this disease.A cardiomyopathy is a disease that affects the muscle of the heart. With HCM, the myocytes (cardiac contractile cells) in the heart increase in size, which results in the thickening of the heart muscle. In addition, the normal alignment of muscle cells is disrupted, a phenomenon known as myocardial disarray. HCM also causes disruptions of the electrical functions of the heart. HCM is most commonly due to a mutation in one of nine sarcomeric genes that results in a mutated protein in the sarcomere, the primary component of the myocyte (the muscle cell of the heart). These are predominantly single-point missense mutations in the genes for beta-myosin heavy chain (MHC), myosin-binding protein C, cardiac troponinT, or tropomyosin. These mutations cause myofibril and myocyte structural abnormalities and possible deficiencies in force generation. Not to be confused with dilated cardiomyopathy or any other cardiomyopathy.While most literature so far focuses on European, American, and Japanese populations, HCM appears in all ethnic groups. The prevalence of HCM is about 0.2% to 0.5% of the general population.