NIH Public Access
... (interquartile range (IQR) 48.0, 70.1); survival ranged from 3.0% to 16.2%, median 8.5% (IQR 5.2%, 10.2%). Ventricular fibrillation incidence was median 12.6 (IQR 10.6, 15.2); survival ranged from 7.7% to 39.4%, median 21.8% (IQR 14.8%, 25.1%). All p-values for differences across sites were < 0.001. ...
... (interquartile range (IQR) 48.0, 70.1); survival ranged from 3.0% to 16.2%, median 8.5% (IQR 5.2%, 10.2%). Ventricular fibrillation incidence was median 12.6 (IQR 10.6, 15.2); survival ranged from 7.7% to 39.4%, median 21.8% (IQR 14.8%, 25.1%). All p-values for differences across sites were < 0.001. ...
Investigation and management of congestive heart failure
... Fluid retention may be present in patients who have dyspnoea, an increase in weight from baseline of more than 2 kg in under three days, raised jugular venous pressure, crepitations on chest auscultation, hepatomegaly, or signs of peripheral oedema. Exercise tolerance The degree of exertion needed t ...
... Fluid retention may be present in patients who have dyspnoea, an increase in weight from baseline of more than 2 kg in under three days, raised jugular venous pressure, crepitations on chest auscultation, hepatomegaly, or signs of peripheral oedema. Exercise tolerance The degree of exertion needed t ...
Heart Rate Variability in Mice with Coronary Heart Disease
... Coronary heart disease (CHD) is a narrowing of the coronary arteries that supply blood and oxygen to the heart. CHD usually results from a build up of fatty material and plaque on the inner lining of the wall of the coronary arteries known as atherosclerosis. There are two kinds of plaques, fibrous ...
... Coronary heart disease (CHD) is a narrowing of the coronary arteries that supply blood and oxygen to the heart. CHD usually results from a build up of fatty material and plaque on the inner lining of the wall of the coronary arteries known as atherosclerosis. There are two kinds of plaques, fibrous ...
Syncope in patients with structural heart disease
... hypertrophic cardiomyopathy and arrhythmogenic right ventricular cardiomyopathy (previously termed dysplasia). Although not classified as structural heart diseases, but rather as genetic disorders that underlie primary electrophysiological disease, the long QT interval syndrome (LQTS), short QT synd ...
... hypertrophic cardiomyopathy and arrhythmogenic right ventricular cardiomyopathy (previously termed dysplasia). Although not classified as structural heart diseases, but rather as genetic disorders that underlie primary electrophysiological disease, the long QT interval syndrome (LQTS), short QT synd ...
Left Ventricular Remodeling in Heart Failure
... implication of concentric hypertrophy suggests that antecedent hypertension of sufficient severity and duration to discernably affect LV structure carries an incremental risk in a patient with subsequent MI. Second, the similarity of risk patterns for subsequent MI and stroke, ...
... implication of concentric hypertrophy suggests that antecedent hypertension of sufficient severity and duration to discernably affect LV structure carries an incremental risk in a patient with subsequent MI. Second, the similarity of risk patterns for subsequent MI and stroke, ...
Implantable Cardioverter Defibrillator (ICD) Therapy
... VF causes the heart to beat more than 200 to 300 times per minute. VF is also a chaotic rhythm. That means the heart’s ventricles try to contract so fast that they quiver rather than beat. The heart rate is so fast that your heart does not have time to pump enough blood to your brain and body tissue ...
... VF causes the heart to beat more than 200 to 300 times per minute. VF is also a chaotic rhythm. That means the heart’s ventricles try to contract so fast that they quiver rather than beat. The heart rate is so fast that your heart does not have time to pump enough blood to your brain and body tissue ...
JE Muller, PL Ludmer, SN Willich, GH Tofler, G Aylmer, I
... Health were used to determine the time of occurrence of sudden cardiac death in a large cohort of individuals. Details on the collection of mortality data by the Commonwealth of Massachusetts have been previously reported."3 In brief, the law requires that a death certificate be completed for each p ...
... Health were used to determine the time of occurrence of sudden cardiac death in a large cohort of individuals. Details on the collection of mortality data by the Commonwealth of Massachusetts have been previously reported."3 In brief, the law requires that a death certificate be completed for each p ...
New devices in heart failure: an European Heart Rhythm
... HF extended the indications to CRT in chronic heart failure, a substantial proportion of patients remain either not eligible for CRT or simply do not respond.9,10 At a time when pharmacological therapy for HF has made only little advances, it is appropriate to explore whether new device-based therap ...
... HF extended the indications to CRT in chronic heart failure, a substantial proportion of patients remain either not eligible for CRT or simply do not respond.9,10 At a time when pharmacological therapy for HF has made only little advances, it is appropriate to explore whether new device-based therap ...
Nandrolone Plus Moderate Exercise Increases the Susceptibility to
... on susceptibility to lethal ventricular arrhythmias in rat. Materials and Methods: The animal groups were as follows: control group (CTL); exercise group (EX) which were under 6 weeks of treadmill exercise; nandrolone group (Nan) which received 5 mg/kg of nandrolone decanoate twice a week; vehicle g ...
... on susceptibility to lethal ventricular arrhythmias in rat. Materials and Methods: The animal groups were as follows: control group (CTL); exercise group (EX) which were under 6 weeks of treadmill exercise; nandrolone group (Nan) which received 5 mg/kg of nandrolone decanoate twice a week; vehicle g ...
Practice Alert - Dysrhythmia Monitoring
... place the patient at immediate risk for developing torsades de pointes. ECG characteristics include underlying prolonged QT interval, T wave alternans, polymorphic ventricular premature beats that fall near the T-U portion of repolarization, pause-dependent enhancement of the QT interval (arrow), an ...
... place the patient at immediate risk for developing torsades de pointes. ECG characteristics include underlying prolonged QT interval, T wave alternans, polymorphic ventricular premature beats that fall near the T-U portion of repolarization, pause-dependent enhancement of the QT interval (arrow), an ...
Malignant Mitral Valve Prolapse - ORBi
... identify features related with stretch-induced scar/fibrosis and arrhythmic MVP, Perazzolo Marra et al,11 in this issue of Circulation: Cardiovascular Imaging, performed a morphological assessment of the mitral valve with a particular focus on mitral annular disjunction (MAD). They studied 2 distinc ...
... identify features related with stretch-induced scar/fibrosis and arrhythmic MVP, Perazzolo Marra et al,11 in this issue of Circulation: Cardiovascular Imaging, performed a morphological assessment of the mitral valve with a particular focus on mitral annular disjunction (MAD). They studied 2 distinc ...
ABSORPTION FROM THE PERICARDIAL CAVITY
... also includes the heart and the short intrapericardial lengths of the great blood vessels. In the areolar tissue immediately below the epicardial serosa, both upon the heart and upon the great vessels, there is a rich plexus of lymphatic capillaries which communicates with the lymphatics in the hear ...
... also includes the heart and the short intrapericardial lengths of the great blood vessels. In the areolar tissue immediately below the epicardial serosa, both upon the heart and upon the great vessels, there is a rich plexus of lymphatic capillaries which communicates with the lymphatics in the hear ...
How the vagus nerve produces beat-to
... Background and Aim: Analysis of heart rate variability (HRV) has recently become the playing field of mathematicians and physicists, losing its relation to physiology and the clinic. To set the record straight, a set of animal experiments is presented here, which was designed to test how vagus nerve ...
... Background and Aim: Analysis of heart rate variability (HRV) has recently become the playing field of mathematicians and physicists, losing its relation to physiology and the clinic. To set the record straight, a set of animal experiments is presented here, which was designed to test how vagus nerve ...
ACLS Defibrillation Protocols
... with monophasic waveforms. This should not be confused with failure to deliver the shock. If the heart does not restart after the initial shock, additional shocks with incremental energy levels should be delivered until conversion is achieved. Other Arrhythmias The use of the ZOLL Rectilinear Biphas ...
... with monophasic waveforms. This should not be confused with failure to deliver the shock. If the heart does not restart after the initial shock, additional shocks with incremental energy levels should be delivered until conversion is achieved. Other Arrhythmias The use of the ZOLL Rectilinear Biphas ...
Harms and benefits of screening young people to prevent sudden
... number of sudden cardiac deaths among young athletes has not been substantiated by solid evidence. Its potential to reduce deaths is likely to be low because of the poor detection rate and the uncertain effectiveness of the management of the diseases thus identified in asymptomatic people. Pre-parti ...
... number of sudden cardiac deaths among young athletes has not been substantiated by solid evidence. Its potential to reduce deaths is likely to be low because of the poor detection rate and the uncertain effectiveness of the management of the diseases thus identified in asymptomatic people. Pre-parti ...
Cir Res Review_R1_last_PK - Spiral
... Starling.7, 8 Astonishingly, given the long history and vast importance of this mechanomechanical feedback for auto-regulation of cardiac output, the mechanisms underlying the ‘Frank-Starling Effect’ are still subject of debate.9 In parallel, first experimental evidence of mechano-electrical feedbac ...
... Starling.7, 8 Astonishingly, given the long history and vast importance of this mechanomechanical feedback for auto-regulation of cardiac output, the mechanisms underlying the ‘Frank-Starling Effect’ are still subject of debate.9 In parallel, first experimental evidence of mechano-electrical feedbac ...
Cardiology
... The electrical stimulus for the heart to pump begins with the sinoatrial (SA) node, a small mass of specialized tissue located near the rear wall of the right atrium that causes the heart to beat. The SA node is often called the heart’s natural pacemaker because it sets the rate and rhythm of the he ...
... The electrical stimulus for the heart to pump begins with the sinoatrial (SA) node, a small mass of specialized tissue located near the rear wall of the right atrium that causes the heart to beat. The SA node is often called the heart’s natural pacemaker because it sets the rate and rhythm of the he ...
Effect of Rate on Left Ventricular Volumes and Ejection Fraction
... SUMMARY Resting left ventricular (LV) function was evaluated in 22 patients with permanent ventricular pacemakers. LVejection fraction and volume indexes were determined by gated blood pool scintigraphy at ventricular pacing rates of 50-100 beats/min. In patients with a normal heart size, increases ...
... SUMMARY Resting left ventricular (LV) function was evaluated in 22 patients with permanent ventricular pacemakers. LVejection fraction and volume indexes were determined by gated blood pool scintigraphy at ventricular pacing rates of 50-100 beats/min. In patients with a normal heart size, increases ...
Catheter Ablation for Cardiac Arrhythmias
... ablations are very focused and confined to the right side of the heart, complications are less than with other ablations. The main complication of ablation is high-grade AV block that may require placement of a pacemaker. Evidence on the efficacy of catheter ablation for PSVT consists of numerous ca ...
... ablations are very focused and confined to the right side of the heart, complications are less than with other ablations. The main complication of ablation is high-grade AV block that may require placement of a pacemaker. Evidence on the efficacy of catheter ablation for PSVT consists of numerous ca ...
High-Intensity Interval Training in Patients With Heart
... METHODS: Two hundred sixty-one patients with left ventricular ejection fraction ≤35% and New York Heart Association class II to III were randomly assigned to HIIT at 90% to 95% of maximal heart rate, MCT at 60% to 70% of maximal heart rate, or RRE. Thereafter, patients were encouraged to continue ex ...
... METHODS: Two hundred sixty-one patients with left ventricular ejection fraction ≤35% and New York Heart Association class II to III were randomly assigned to HIIT at 90% to 95% of maximal heart rate, MCT at 60% to 70% of maximal heart rate, or RRE. Thereafter, patients were encouraged to continue ex ...
Time course of recovery of heart period variability after
... (midnight to 5 :00 AM) and daytime (7:30 AM to 9:30 Evil periods analyzable . Also, at least half the daytime and nighttime data had to be recorded during sinus rhythm . Patients with atria) flutter or fibrillation or any other sustained rhythm disturbance were excluded . These rules excluded seven ...
... (midnight to 5 :00 AM) and daytime (7:30 AM to 9:30 Evil periods analyzable . Also, at least half the daytime and nighttime data had to be recorded during sinus rhythm . Patients with atria) flutter or fibrillation or any other sustained rhythm disturbance were excluded . These rules excluded seven ...
PDF - Circulation
... METHODS: Two hundred sixty-one patients with left ventricular ejection fraction ≤35% and New York Heart Association class II to III were randomly assigned to HIIT at 90% to 95% of maximal heart rate, MCT at 60% to 70% of maximal heart rate, or RRE. Thereafter, patients were encouraged to continue ex ...
... METHODS: Two hundred sixty-one patients with left ventricular ejection fraction ≤35% and New York Heart Association class II to III were randomly assigned to HIIT at 90% to 95% of maximal heart rate, MCT at 60% to 70% of maximal heart rate, or RRE. Thereafter, patients were encouraged to continue ex ...
Helping Your Heart - Patients
... abnormal heart rhythm. It could be irregular, too fast, or too slow. What are the different kinds of arrhythmia? Too Slow—Bradycardia Bradycardia means “slow heart.” A heart that beats too slowly all the time can make a person tired, dizzy, or lightheaded because a slow heart is not pumping enough b ...
... abnormal heart rhythm. It could be irregular, too fast, or too slow. What are the different kinds of arrhythmia? Too Slow—Bradycardia Bradycardia means “slow heart.” A heart that beats too slowly all the time can make a person tired, dizzy, or lightheaded because a slow heart is not pumping enough b ...
Electrical alternansin cardiac tamponade
... CLASSIFICATION AND PROGNOSIS It is clear from the present study that in addition to the wellknown 1: 1 or exact alternans a 2: 1 and 3: 1 alternans exist, and both can be either total or ventricular. Furthermore, a varying type of electrical alternans, characterized by marked variation and completel ...
... CLASSIFICATION AND PROGNOSIS It is clear from the present study that in addition to the wellknown 1: 1 or exact alternans a 2: 1 and 3: 1 alternans exist, and both can be either total or ventricular. Furthermore, a varying type of electrical alternans, characterized by marked variation and completel ...
ECHOCARDIOGRAPHY ASSESSMENT OF SYSTOLIC FUNCTION
... diagnostic problems appear for patients with systemic right ventricle (RV), single ventricle physiology or univentricular heart (UVH) corrected by Fontan procedure. Finding a common methodology for ECHO evaluation of ventricular function in hearts with completely different ventricular geometry, cont ...
... diagnostic problems appear for patients with systemic right ventricle (RV), single ventricle physiology or univentricular heart (UVH) corrected by Fontan procedure. Finding a common methodology for ECHO evaluation of ventricular function in hearts with completely different ventricular geometry, cont ...