Metabolic aspects of cardiac arrhythmias
... Cardiac arrhythmias are an important cause of mortality and morbidity in patients with cardiac diseases. Sudden death due to ventricular tachycardia and fibrillation (VT/VF) in the setting of acute myocardial infarction (AMI) and heart failure (HF) is a frequent cause of premature death. Another rec ...
... Cardiac arrhythmias are an important cause of mortality and morbidity in patients with cardiac diseases. Sudden death due to ventricular tachycardia and fibrillation (VT/VF) in the setting of acute myocardial infarction (AMI) and heart failure (HF) is a frequent cause of premature death. Another rec ...
Foster, Jagdish Butany, Ted Feldman and Thomas A. Burdon James
... ventricular pressures were measured simultaneously with an 18gauge catheter directly placed in the left atrium and a 7F catheter placed via an introducer in the femoral artery, respectively. After adequate echocardiographic and fluoroscopic images and hemodynamic measurements were obtained, the hear ...
... ventricular pressures were measured simultaneously with an 18gauge catheter directly placed in the left atrium and a 7F catheter placed via an introducer in the femoral artery, respectively. After adequate echocardiographic and fluoroscopic images and hemodynamic measurements were obtained, the hear ...
Persistent Atrial Fibrillation And Atrial Flutter Complicated By
... the hard dilemma of wide QRS during atrial fibrillation: ventricular ectopy, preexcitation or aberrant ventricular conduction?6 We immediately ruled out the third ipothesis: the QRS morphology was not aberrant and there was no Ashman phenomenon. However, on the basis of the ECG only, it was much mor ...
... the hard dilemma of wide QRS during atrial fibrillation: ventricular ectopy, preexcitation or aberrant ventricular conduction?6 We immediately ruled out the third ipothesis: the QRS morphology was not aberrant and there was no Ashman phenomenon. However, on the basis of the ECG only, it was much mor ...
Molecular and Cellular Basis for Diastolic Dysfunction
... EF. The pathophysiology of HFpEF is currently incompletely understood, which precludes specific therapy. Both HF phenotypes demonstrate distinct cardiac remodeling processes at the macroscopic, microscopic, and ultrastructural levels. Increased diastolic left-ventricular (LV) stiffness and impaired ...
... EF. The pathophysiology of HFpEF is currently incompletely understood, which precludes specific therapy. Both HF phenotypes demonstrate distinct cardiac remodeling processes at the macroscopic, microscopic, and ultrastructural levels. Increased diastolic left-ventricular (LV) stiffness and impaired ...
Medtronic Structural Heart ICD
... Information provided is gathered from third party sources and is subject to change without notice due to frequently changing laws, rules and regulations. Medtronic makes no guarantee that the use of this information will prevent differences of opinion or disputes with Medicare or other third party p ...
... Information provided is gathered from third party sources and is subject to change without notice due to frequently changing laws, rules and regulations. Medtronic makes no guarantee that the use of this information will prevent differences of opinion or disputes with Medicare or other third party p ...
Atrioventricular Junction Ablation In Atrial Fibrillation
... repolarization disturbances have been identified, creating a substrate for pause-dependent polymorphic ventricular arrhythmia (similar to acquired long QT syndromes). These predisposing factors include decreased heart rate, increased sympathetic activity, hypokalemia, antiarrhythmic drugs and change ...
... repolarization disturbances have been identified, creating a substrate for pause-dependent polymorphic ventricular arrhythmia (similar to acquired long QT syndromes). These predisposing factors include decreased heart rate, increased sympathetic activity, hypokalemia, antiarrhythmic drugs and change ...
Labeled Phosphate Distribution in Working and Nonworking
... in the ra.dioautogrn.ph reproduced in figure 3. Details concerning the isolation technic and identification of individual components have been presented in an earlier report.7 A further fractionation sequence was recently developed8 for the localization of labeled P in nucleoside polyphosphates and ...
... in the ra.dioautogrn.ph reproduced in figure 3. Details concerning the isolation technic and identification of individual components have been presented in an earlier report.7 A further fractionation sequence was recently developed8 for the localization of labeled P in nucleoside polyphosphates and ...
Right ventricle - Anatomy and Physiology
... • The plaque, or an associated thrombus (clot), then narrows the passageway and reduces blood flow • Spasms in smooth muscles of vessel wall can further decrease or stop blood flow • One of the first symptoms of CAD is commonly angina pectoris ...
... • The plaque, or an associated thrombus (clot), then narrows the passageway and reduces blood flow • Spasms in smooth muscles of vessel wall can further decrease or stop blood flow • One of the first symptoms of CAD is commonly angina pectoris ...
How to diagnose diastolic heart failure: a consensus statement on
... age, gender, and body size suggesting that early stages of remodelling are already occurring in HFNEF.38 Such an evolution has also been observed in hypertensive heart disease,39–42 especially in African43–45 and Asian46,47 populations. In many of these studies, interval clinical events, such as myo ...
... age, gender, and body size suggesting that early stages of remodelling are already occurring in HFNEF.38 Such an evolution has also been observed in hypertensive heart disease,39–42 especially in African43–45 and Asian46,47 populations. In many of these studies, interval clinical events, such as myo ...
How to diagnose diastolic heart failure: a consensus
... remodelling are already occurring in HFNEF.38 Such an evolution has also been observed in hypertensive heart disease,39–42 especially in African43–45 and Asian46,47 populations. In many of these studies, interval clinical events, such as myocardial infarction, were, however, not reported or significa ...
... remodelling are already occurring in HFNEF.38 Such an evolution has also been observed in hypertensive heart disease,39–42 especially in African43–45 and Asian46,47 populations. In many of these studies, interval clinical events, such as myocardial infarction, were, however, not reported or significa ...
Diagnosis and Treatment of Bicuspid Aortic Valve Disease
... Because the life expectancy is long for these patients, bioprosthetic or mechanic valve implantation is controversial. With the third generation bioprosthetic valves, in 80% of the patients, there was no need for another operation in the next 12 years (21). New generation stent-free bioprosthesis ar ...
... Because the life expectancy is long for these patients, bioprosthetic or mechanic valve implantation is controversial. With the third generation bioprosthetic valves, in 80% of the patients, there was no need for another operation in the next 12 years (21). New generation stent-free bioprosthesis ar ...
A novel, minimally invasive, segmental myocardial infarction with a
... Choi BR, Koren G. A novel, minimally invasive, segmental myocardial infarction with a clear healed infarct borderzone in rabbits. Am J Physiol Heart Circ Physiol 302: H2321–H2330, 2012. First published March 23, 2012; doi:10.1152/ajpheart.00031.2012.—Ventricular arrhythmias in the setting of a heale ...
... Choi BR, Koren G. A novel, minimally invasive, segmental myocardial infarction with a clear healed infarct borderzone in rabbits. Am J Physiol Heart Circ Physiol 302: H2321–H2330, 2012. First published March 23, 2012; doi:10.1152/ajpheart.00031.2012.—Ventricular arrhythmias in the setting of a heale ...
Straddling tricuspid valve - Heart
... other. The aorta arises from the morphological right ventricle and the pulmonary trunk from the morphological left ventricle. In addition to transposition, the great vessels may show inversion or noninversion. If the transposed aortic valve lies to the right of the pulmonary valve, there is noninver ...
... other. The aorta arises from the morphological right ventricle and the pulmonary trunk from the morphological left ventricle. In addition to transposition, the great vessels may show inversion or noninversion. If the transposed aortic valve lies to the right of the pulmonary valve, there is noninver ...
PACEMAKER: An Insight Into the Artificial Heart Rhythm
... Pacemaker Operation. 32nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, ...
... Pacemaker Operation. 32nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, ...
Anomalous Origin of Right Coronary Artery
... heart tube.3 In particular, abnormal involution, position of endothelial buds, or septation of the truncus arteriosis may give rise to anomalous origin of coronary arteries.4 In general, anomalous coronary arteries can be described as those able to cause interruptions in coronary blood flow or signi ...
... heart tube.3 In particular, abnormal involution, position of endothelial buds, or septation of the truncus arteriosis may give rise to anomalous origin of coronary arteries.4 In general, anomalous coronary arteries can be described as those able to cause interruptions in coronary blood flow or signi ...
Prenatal diagnosis of major aortopulmonary collateral arteries
... more commonly encountered is one in which pulmonary blood flow is supplied by aortopulmonary collateral arteries which usually originate from the descending aorta, the aortic arch, or subclavian artery. The number of collateral vessels can vary, as does the nature of the connection of these vessels ...
... more commonly encountered is one in which pulmonary blood flow is supplied by aortopulmonary collateral arteries which usually originate from the descending aorta, the aortic arch, or subclavian artery. The number of collateral vessels can vary, as does the nature of the connection of these vessels ...
congenital heart disease
... Aorta comes to lie anterior to the pulmonary artery. deoxygenated blood circulates to the body and oxygenated blood circulates to the lungs. Incompatible with life if no ASD/ VSD/ PDA ...
... Aorta comes to lie anterior to the pulmonary artery. deoxygenated blood circulates to the body and oxygenated blood circulates to the lungs. Incompatible with life if no ASD/ VSD/ PDA ...
Asymptomatic Aortic Stenosis-Prognosis, Risk Stratification and
... Fig. 6. Invasive assessment of aortic stenosis. Simultaneous measurement of left ventricular and aortic pressures (left side), showing a significant pressure gradient indicating severe aortic stenosis. This gradient disappears after pull-back of the tip of the catheter into the aorta ascendens (righ ...
... Fig. 6. Invasive assessment of aortic stenosis. Simultaneous measurement of left ventricular and aortic pressures (left side), showing a significant pressure gradient indicating severe aortic stenosis. This gradient disappears after pull-back of the tip of the catheter into the aorta ascendens (righ ...
Cardio85-CardiacMuscleMechanicsPt3
... and there is no opposing force, the med school students will be able to run faster than the profs. The med students are synonymous to mm with high contractility. So high contractility results in higher velocity. X. Responses to depressed contractility a. ESV incr because of decreased ejection b. EDV ...
... and there is no opposing force, the med school students will be able to run faster than the profs. The med students are synonymous to mm with high contractility. So high contractility results in higher velocity. X. Responses to depressed contractility a. ESV incr because of decreased ejection b. EDV ...
Wolff-Parkinson-White Syndrome and Associated Arrhythmias
... has been shown better or worse than any other in patients with WPW. EP physicians may make anesthesia requests that are typically easy to accommodate. Data is always preferred. Electrophysiologic information about WPW and the associated arrhythmias have been well known in cardiology for many years, ...
... has been shown better or worse than any other in patients with WPW. EP physicians may make anesthesia requests that are typically easy to accommodate. Data is always preferred. Electrophysiologic information about WPW and the associated arrhythmias have been well known in cardiology for many years, ...
Specific Findings of the Standard 12-Lead ECG in
... and coronary angiography (CAG) is usually performed to distinguish the 2 conditions during the acute phase. The present study was designed to determine whether the standard 12-lead electrocardiogram (ECG) findings could help to distinguish ‘Takotsubo’ cardiomyopathy from anterior AMI. The study grou ...
... and coronary angiography (CAG) is usually performed to distinguish the 2 conditions during the acute phase. The present study was designed to determine whether the standard 12-lead electrocardiogram (ECG) findings could help to distinguish ‘Takotsubo’ cardiomyopathy from anterior AMI. The study grou ...
Transseptal puncture
... atrial pressure in patients with heart failure and valvular heart disease. There are clear limitations to PCW, especially among patients with pulmonary hypertension (17-21). In the setting hypertension, elevated Pulof pulmonary "contaminate" the monary artery pressure may wedge pressure waveform and ...
... atrial pressure in patients with heart failure and valvular heart disease. There are clear limitations to PCW, especially among patients with pulmonary hypertension (17-21). In the setting hypertension, elevated Pulof pulmonary "contaminate" the monary artery pressure may wedge pressure waveform and ...
Effects of Nitroprusside on Venous Return and Central
... blood in the central circulation,'9-21 and the shifts in this blood volume between the central and systemic circulations both in the normal and failure states. ...
... blood in the central circulation,'9-21 and the shifts in this blood volume between the central and systemic circulations both in the normal and failure states. ...
Right Heart Percutaneous Valve Therapies
... the left coronary artery, may be at risk of compression during RVOT conduit stenting or valve placement, depending on the postsurgical anatomic relationship between the more anteriorly placed RV-PA conduit and the coronaries. Often, it is not possible to predict the risk of coronary compression with ...
... the left coronary artery, may be at risk of compression during RVOT conduit stenting or valve placement, depending on the postsurgical anatomic relationship between the more anteriorly placed RV-PA conduit and the coronaries. Often, it is not possible to predict the risk of coronary compression with ...
Articles in PresS. Am J Physiol Heart Circ Physiol (February 3, 2012
... contractility and diastolic stiffness. Increasingly anisotropic conduction velocity due to fibrosis ...
... contractility and diastolic stiffness. Increasingly anisotropic conduction velocity due to fibrosis ...
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.