Images and Case Reports in Arrhythmia and Electrophysiology
... -blockers,3 and the additional administration of flecainide or verapamil to -blockers has been reported to be effective; however, the effects of those drugs are not fully standardized. For medically refractory cases, sympathetic denervation is one of the alternative treatment options. The ICD is c ...
... -blockers,3 and the additional administration of flecainide or verapamil to -blockers has been reported to be effective; however, the effects of those drugs are not fully standardized. For medically refractory cases, sympathetic denervation is one of the alternative treatment options. The ICD is c ...
Application of first-pass contrast bolus tracking sequence for the
... children and infants with congenital heart disease. Diagnosis of congenital pulmonary and great vessel anomalies helps clinicians to determine the appropriate management strategy for the patient. In the preoperative period, evaluation of the anomalous vascular anatomy guides the surgeon during the p ...
... children and infants with congenital heart disease. Diagnosis of congenital pulmonary and great vessel anomalies helps clinicians to determine the appropriate management strategy for the patient. In the preoperative period, evaluation of the anomalous vascular anatomy guides the surgeon during the p ...
Fatal cardiac arrhythmias in patients with heart failure: Risk
... • NYHA functional class and presence of nonsustained VT do not provide incremental value in risk assessment over other parameters such as LVEF. • In MADIT II and some small epidemiological studies, QT measurements had been shown to be associated with malignant ventricular arrhythmias. However the se ...
... • NYHA functional class and presence of nonsustained VT do not provide incremental value in risk assessment over other parameters such as LVEF. • In MADIT II and some small epidemiological studies, QT measurements had been shown to be associated with malignant ventricular arrhythmias. However the se ...
022802 Aortic Stenosis - New England Journal of Medicine
... question arises whether patients with severe asymptomatic aortic stenosis should undergo aortic-valve replacement to protect them from sudden death. Although some experts advocate this approach, this strategy exposes the entire group of asymptomatic patients with severe aortic stenosis to the risk o ...
... question arises whether patients with severe asymptomatic aortic stenosis should undergo aortic-valve replacement to protect them from sudden death. Although some experts advocate this approach, this strategy exposes the entire group of asymptomatic patients with severe aortic stenosis to the risk o ...
Cardiac remodelling: general aspects and
... eart failure (HF) is a worldwide health problem that affects approximately 26 million individuals (1). It is known that heart disease progresses to HF, and there is a link between cardiac remodelling and the development of HF. Cardiac remodelling is defined as a group of molecular, cellular and inte ...
... eart failure (HF) is a worldwide health problem that affects approximately 26 million individuals (1). It is known that heart disease progresses to HF, and there is a link between cardiac remodelling and the development of HF. Cardiac remodelling is defined as a group of molecular, cellular and inte ...
relatively inactive adults - British Journal of Sports Medicine
... However, longitudinal studies investigating the effects of vigorous exercise have produced less consistent results with respect to changes in the left ventricular mass and the thickness of the ventricular wall.2" A reason for this could be the relatively short duration of some of the studies,22 sinc ...
... However, longitudinal studies investigating the effects of vigorous exercise have produced less consistent results with respect to changes in the left ventricular mass and the thickness of the ventricular wall.2" A reason for this could be the relatively short duration of some of the studies,22 sinc ...
Lead wires and electrodes - O6U E
... • The bipolar pacing stimulus may be very difficult to see on the surface ECG, because in bipolar pacing the distance between the two poles that deliver current (i.e. the tip and the ring of the pacemaker lead) is very small (about a centimeter). • It will also be noted that leads that are used for ...
... • The bipolar pacing stimulus may be very difficult to see on the surface ECG, because in bipolar pacing the distance between the two poles that deliver current (i.e. the tip and the ring of the pacemaker lead) is very small (about a centimeter). • It will also be noted that leads that are used for ...
Original Article Ventricular septal rupture complicating acute
... The 1 patient with prior CAD was a nonsurvivor. Initial systolic blood pressure (BP) was significantly higher in the survival group (145 vs 98, p<0.01) but there was no difference in diastolic BP. High mean arterial pressure (MAP) and low heart rate (HR) was seen in the survival group (96 vs 76, p=0 ...
... The 1 patient with prior CAD was a nonsurvivor. Initial systolic blood pressure (BP) was significantly higher in the survival group (145 vs 98, p<0.01) but there was no difference in diastolic BP. High mean arterial pressure (MAP) and low heart rate (HR) was seen in the survival group (96 vs 76, p=0 ...
CARDIAC PACEMAKERS
... sinoatrial block, chronotropic incompetence Often associated with paroxysmal SVTs (bradycardia-tachycardia syndrome) May result from drug therapy Symptomatic? Often the primary indication for a pacemaker ...
... sinoatrial block, chronotropic incompetence Often associated with paroxysmal SVTs (bradycardia-tachycardia syndrome) May result from drug therapy Symptomatic? Often the primary indication for a pacemaker ...
TETRALOGY OF FALLOT: REPORT OF TWO CASES IN
... upper respiratory infections several times and one hospitalization due to lower respiratory infection. The girl was not indicated for cardiac medicamentous therapy until the term for surgery. Complete surgical reparation was performed at the age of one year. Diagnostic methods ― echocardiography and ...
... upper respiratory infections several times and one hospitalization due to lower respiratory infection. The girl was not indicated for cardiac medicamentous therapy until the term for surgery. Complete surgical reparation was performed at the age of one year. Diagnostic methods ― echocardiography and ...
Impella 2.5
... § Catheter based, axial flow pump pulls oxygenated blood from the LV, and expels it into the ascending aorta § Transports blood in the same manner as the ...
... § Catheter based, axial flow pump pulls oxygenated blood from the LV, and expels it into the ascending aorta § Transports blood in the same manner as the ...
Arrhythmic Sudden Cardiac Death: Substrate, Mechanisms and
... geneity.70 Two techniques have been established for TWA detection. The spectral method analyses fluctuations in the T wave by computerised techniques, using a Fast Fourier Transform. A progressive exercise protocol for increasing the heart rate, with simultaneous use of specific electrodes and a hig ...
... geneity.70 Two techniques have been established for TWA detection. The spectral method analyses fluctuations in the T wave by computerised techniques, using a Fast Fourier Transform. A progressive exercise protocol for increasing the heart rate, with simultaneous use of specific electrodes and a hig ...
PDF - Circulation: Arrhythmia and Electrophysiology
... beats.16 The original assumption of total independence (protection) of parasystolic focus from extraneous beats is no longer considered true. It is now evident that any pacemaker connected to the surrounding tissues by an area of depressed excitability producing entrance conduction disturbances whil ...
... beats.16 The original assumption of total independence (protection) of parasystolic focus from extraneous beats is no longer considered true. It is now evident that any pacemaker connected to the surrounding tissues by an area of depressed excitability producing entrance conduction disturbances whil ...
cardiac output and myocardial function - pact
... Infection of catheter-associated thrombosis can produce systemic sepsis in the absence of local inflammation. Infective endocarditis attributable to pulmonary artery catheterization is a rare event. Overview of the complications. Despite this rather formidable list of potential hazards, in practice ...
... Infection of catheter-associated thrombosis can produce systemic sepsis in the absence of local inflammation. Infective endocarditis attributable to pulmonary artery catheterization is a rare event. Overview of the complications. Despite this rather formidable list of potential hazards, in practice ...
Physiological Mechanisms for Calcium-Induced
... be easily obtained with nitroprusside in these patients,21 this explanation seems unlikely. Several methodological issues should be addressed regarding the current study. First, serum catecholamines were not measured. However, Marone et al2 have previously shown that raising serum calcium does not c ...
... be easily obtained with nitroprusside in these patients,21 this explanation seems unlikely. Several methodological issues should be addressed regarding the current study. First, serum catecholamines were not measured. However, Marone et al2 have previously shown that raising serum calcium does not c ...
Infant Heart Dissection in a Forensic Context
... ABSTRACT: Medical examiners who investigate infant deaths are required to consider a large number of natural and non-natural causes due to the broad differential diagnosis of unexpected infant death. Among the myriad of causes are those related to disorders in structure and function of the cardiovas ...
... ABSTRACT: Medical examiners who investigate infant deaths are required to consider a large number of natural and non-natural causes due to the broad differential diagnosis of unexpected infant death. Among the myriad of causes are those related to disorders in structure and function of the cardiovas ...
2014 - Dr. Dhiren Shah
... A PROGRESSIVE DISEASE OF THE ELDERLY Aortic stenosis is the most common acquired valvular disease in the United States, and its incidence and prevalence are rising as the population ages. Epidemiologic studies suggest that 2% to 7% of all patients over age 65 have it. The natural history of the untr ...
... A PROGRESSIVE DISEASE OF THE ELDERLY Aortic stenosis is the most common acquired valvular disease in the United States, and its incidence and prevalence are rising as the population ages. Epidemiologic studies suggest that 2% to 7% of all patients over age 65 have it. The natural history of the untr ...
Analysis of Left Ventricular Wall Motion by Reflected
... evaluation but found to have no clinical evidence of heart disease. There were 11 males and nine females, with an average age of 27.0 years (range 13-50). Three additional patients were studied but excluded from analysis because it was not possible to obtain technically satisfactory simultaneous rec ...
... evaluation but found to have no clinical evidence of heart disease. There were 11 males and nine females, with an average age of 27.0 years (range 13-50). Three additional patients were studied but excluded from analysis because it was not possible to obtain technically satisfactory simultaneous rec ...
Basic cardiology intro
... hemodynamic stability. Rates less than 60 or greater than 100, can lead to hemodynamic instability and become symptomatic. • Step 2 asks if the rhythm is regular. Rhythms originating from the normal pacemakers in the heart will be regular. Irregular rhythms indicate extra beats or abnormal rhythms. ...
... hemodynamic stability. Rates less than 60 or greater than 100, can lead to hemodynamic instability and become symptomatic. • Step 2 asks if the rhythm is regular. Rhythms originating from the normal pacemakers in the heart will be regular. Irregular rhythms indicate extra beats or abnormal rhythms. ...
Sudden Death Due to Aortic Coarctation
... arteries, mitral valve abnormalities, Taussing-Bing abnormality, tricuspid atresia, hypoplasic left heart, atresia of the pulmonary artery, abnormal origin of right (or both) subclavian artery (arteries), aneurysms in the Circle of Willis,3,6 hemangiomas, etc. ...
... arteries, mitral valve abnormalities, Taussing-Bing abnormality, tricuspid atresia, hypoplasic left heart, atresia of the pulmonary artery, abnormal origin of right (or both) subclavian artery (arteries), aneurysms in the Circle of Willis,3,6 hemangiomas, etc. ...
Circulation: Arrhythmia and Electrophysiology Topic Review
... Summary: Nonsustained ventricular tachycardia (VT) occurs frequently in patients hospitalized with acute coronary syndromes, although the clinical implications of VT remain uncertain, in particular relative to the absolute risk of sudden cardiac death in patients with shorter episodes of ventricular ...
... Summary: Nonsustained ventricular tachycardia (VT) occurs frequently in patients hospitalized with acute coronary syndromes, although the clinical implications of VT remain uncertain, in particular relative to the absolute risk of sudden cardiac death in patients with shorter episodes of ventricular ...
Electrical Conduction Disturbance Effects on Dynamic
... morbid complication in patients with ischemic heart disease or dilated cardiomyopathy, increasing long-term risk and mortality (1– 4). Several competing geometric and hemodynamic factors may cause the functional MR: mitral annulus dilation, tethering of the leaflet secondary to papillary muscles dis ...
... morbid complication in patients with ischemic heart disease or dilated cardiomyopathy, increasing long-term risk and mortality (1– 4). Several competing geometric and hemodynamic factors may cause the functional MR: mitral annulus dilation, tethering of the leaflet secondary to papillary muscles dis ...
The extents of mitral leaflet opening and closure are - Heart
... been demonstrated that this phenomenon occurs in nonischaemic LV dysfunction as well.11 13 15 It has been shown that when papillary muscle function is kept normal (by perfusing it selectively with blood), the degree of IMLC correlates with the degree of LV systolic dysfunction.15 The main role of th ...
... been demonstrated that this phenomenon occurs in nonischaemic LV dysfunction as well.11 13 15 It has been shown that when papillary muscle function is kept normal (by perfusing it selectively with blood), the degree of IMLC correlates with the degree of LV systolic dysfunction.15 The main role of th ...
Non-cardiac Surgery in the Adult Congenital Heart Patient
... age. In an extracardiac Fontan procedure, the inferior vena cava is divided from the heart and anastomosed using a conduit to the pulmonary artery. Then a small fenestration is made between the ...
... age. In an extracardiac Fontan procedure, the inferior vena cava is divided from the heart and anastomosed using a conduit to the pulmonary artery. Then a small fenestration is made between the ...
Cardiac Pacemakers and Resynchronization Step by Step. An Illustrated Brochure
... To place an order via fax simply print this form, fill in the information below and fax the completed form to 646-607-1907 (from USA) or +353-1-481-1716 (from Rest of World). If you have any questions please visit http://www.researchandmarkets.com/contact/ ...
... To place an order via fax simply print this form, fill in the information below and fax the completed form to 646-607-1907 (from USA) or +353-1-481-1716 (from Rest of World). If you have any questions please visit http://www.researchandmarkets.com/contact/ ...
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.