Antifailure Therapy Including Spironolactone Improves Left
... ≥3 months. Exclusion criteria were potentially reversible causes of HF, such as myocarditis and peripartum cardiomyopathy, need for an implantable cardioverter-defibrillator, myocardial infarction on electrocardiogram (ECG), a positive stress test or angiographic coronary artery stenosis ≥50% in a ma ...
... ≥3 months. Exclusion criteria were potentially reversible causes of HF, such as myocarditis and peripartum cardiomyopathy, need for an implantable cardioverter-defibrillator, myocardial infarction on electrocardiogram (ECG), a positive stress test or angiographic coronary artery stenosis ≥50% in a ma ...
Interaction between cardiac sympathetic drive and heart rate in heart
... heart rate, and second to address the potential influence of polymorphic variations of the pre-synaptic ␣2C- and 2adrenoceptors on the release of norepinephrine. To investigate the theoretical ability of polymorphisms of the post-synaptic adrenoceptors (1 and 2) to modify the heart rate response ...
... heart rate, and second to address the potential influence of polymorphic variations of the pre-synaptic ␣2C- and 2adrenoceptors on the release of norepinephrine. To investigate the theoretical ability of polymorphisms of the post-synaptic adrenoceptors (1 and 2) to modify the heart rate response ...
Anisotropy of wave propagation in the heart can be modeled by a
... many biological and physicochemical systems (1). Cardiac contraction is one of the most important of these processes, and is organized by the propagation of electrical waves in the heart. Abnormal propagation of such waves may result in the onset of life-threatening conditions. For example, ventricu ...
... many biological and physicochemical systems (1). Cardiac contraction is one of the most important of these processes, and is organized by the propagation of electrical waves in the heart. Abnormal propagation of such waves may result in the onset of life-threatening conditions. For example, ventricu ...
096 Heart rate reserve in ACHD - Diller - Circ 2006
... for ACHD patients. This study was approved by the local ethics committee. Almost all patients underwent only 1 test during the study period. Any repeat test was not included in the analysis. A main diagnosis was determined for every patient from the hospital records. If more than 1 cardiac lesion wa ...
... for ACHD patients. This study was approved by the local ethics committee. Almost all patients underwent only 1 test during the study period. Any repeat test was not included in the analysis. A main diagnosis was determined for every patient from the hospital records. If more than 1 cardiac lesion wa ...
Short-term heart rate variability (HRV) in healthy dogs
... Heart rate variability (HRV) is a well established mortality risk factor in both healthy dogs and those with heart failure. While the standards for short-term HRV analysis have been developed in humans, only reference values for HRV parameters determined from 24-hour ECG have been proposed in dogs. ...
... Heart rate variability (HRV) is a well established mortality risk factor in both healthy dogs and those with heart failure. While the standards for short-term HRV analysis have been developed in humans, only reference values for HRV parameters determined from 24-hour ECG have been proposed in dogs. ...
Genetic influence on electrocardiogram time intervals - AJP
... the general population. Studies using inbred mice may reveal these influences, as inbred mice have been used to dissect the genetic factors underlying many human diseases (31). The ECG is a diagnostic and research tool that measures and records the electrical activity of the cardiac conduction syste ...
... the general population. Studies using inbred mice may reveal these influences, as inbred mice have been used to dissect the genetic factors underlying many human diseases (31). The ECG is a diagnostic and research tool that measures and records the electrical activity of the cardiac conduction syste ...
fibrillation
... factors such as sympathetic and parasympathetic influences and the effects of drugs. In stress or exercise, during which the sympathetic tone is increased and vagal tone decreased, atrioventricular nodal conduction is enhanced resulting in excessive impulse transmission and disproportionately high v ...
... factors such as sympathetic and parasympathetic influences and the effects of drugs. In stress or exercise, during which the sympathetic tone is increased and vagal tone decreased, atrioventricular nodal conduction is enhanced resulting in excessive impulse transmission and disproportionately high v ...
Original Article
... LVEF, left ventricular ejection fraction; LVEDd, left ventricular end-diastolic diameter; LVESd, left ventricular end-systolic diameter; MR, mitral regurgitation; QRSd, QRS complex duration; and QLV, left ventricular lead local electrogram delay from the beginning of QRS; and SR, sinus rhythm at imp ...
... LVEF, left ventricular ejection fraction; LVEDd, left ventricular end-diastolic diameter; LVESd, left ventricular end-systolic diameter; MR, mitral regurgitation; QRSd, QRS complex duration; and QLV, left ventricular lead local electrogram delay from the beginning of QRS; and SR, sinus rhythm at imp ...
Chapter 5: A novel fluorescent marker for molecular - UvA-DARE
... Characteristic features of the sinus node are its location at the junction of the crista terminalis, the superior caval vein and the intercaval region (sinus venarum), the abundance of connective tissue within the sinus node, the small and spindle shaped cells in the center, the pale and undifferent ...
... Characteristic features of the sinus node are its location at the junction of the crista terminalis, the superior caval vein and the intercaval region (sinus venarum), the abundance of connective tissue within the sinus node, the small and spindle shaped cells in the center, the pale and undifferent ...
Non-Classical Indications for Cardiac Resynchronization Therapy
... described a novel alternative approach to treating these patients. They found that AF ablation used in patients with heart failure and a low EF was relatively effective. In this study, 62% of the patients remained in sinus rhythm at the end of the follow up, and improved left ventricular systolic fu ...
... described a novel alternative approach to treating these patients. They found that AF ablation used in patients with heart failure and a low EF was relatively effective. In this study, 62% of the patients remained in sinus rhythm at the end of the follow up, and improved left ventricular systolic fu ...
Automated external defibrillators: What`s established? What`s new?
... across Japan who had an out-of-hospital cardiac arrest and in whom resuscitation was attempted by emergency responders. They evaluated the effect of nationwide dissemination of public-access AEDs on the rate of survival after an out-of-hospital cardiac arrest. The primary outcome measure was the 1mo ...
... across Japan who had an out-of-hospital cardiac arrest and in whom resuscitation was attempted by emergency responders. They evaluated the effect of nationwide dissemination of public-access AEDs on the rate of survival after an out-of-hospital cardiac arrest. The primary outcome measure was the 1mo ...
Role of Left Ventricular Diastolic Dysfunction in Predicting
... successful electrical cardioversion is largely unknown. Studies suggest that there may be a link between abnormal LV compliance and the initial development, and recurrence of AF after electrical cardioversion. Although direct-current cardioversion (DCCV) is a well-established and highly effective me ...
... successful electrical cardioversion is largely unknown. Studies suggest that there may be a link between abnormal LV compliance and the initial development, and recurrence of AF after electrical cardioversion. Although direct-current cardioversion (DCCV) is a well-established and highly effective me ...
Early origins of cardiac hypertrophy: Does cardiomyocyte attrition
... Minimal information regarding the influence of maternal caloric restriction on the heart is available. In rats, maternal nutrient restriction (40% control diet) during midto late-gestation does not program cardiac hypertrophy in neonates32 or in offspring at either 4 or 7 months of age.33 In sheep, ...
... Minimal information regarding the influence of maternal caloric restriction on the heart is available. In rats, maternal nutrient restriction (40% control diet) during midto late-gestation does not program cardiac hypertrophy in neonates32 or in offspring at either 4 or 7 months of age.33 In sheep, ...
ECG - A Pictorial Primer
... number of QRS complexes in a 6-second period by 10. For very slow heart rates in which there are few QRS complexes in a 6-second interval, accuracy can be improved by multiplying the number of QRS complexes in a 12-second period by 5. ...
... number of QRS complexes in a 6-second period by 10. For very slow heart rates in which there are few QRS complexes in a 6-second interval, accuracy can be improved by multiplying the number of QRS complexes in a 12-second period by 5. ...
Polar S810 as an Alternative Resource to the Use of the
... Background: The 4-second exercise test (T4s) evaluates the cardiac vagal tone during the initial heart rate (HR) transient at sudden dynamic exercise, through the identification of the cardiac vagal index (CVI) obtained from the electrocardiogram (ECG). Objective: To evaluate the use of the Polar S8 ...
... Background: The 4-second exercise test (T4s) evaluates the cardiac vagal tone during the initial heart rate (HR) transient at sudden dynamic exercise, through the identification of the cardiac vagal index (CVI) obtained from the electrocardiogram (ECG). Objective: To evaluate the use of the Polar S8 ...
Bradyarrhythmias and Conduction Blocks
... nonspecific and chronic symptoms such as dizziness or fatigue. Conditions resulting in bradyarrhythmic disorders are divided into intrinsic and extrinsic conditions causing damage to the conduction system. Furthermore bradyarrhythmias can be a normal physiologic reaction under certain circumstances. ...
... nonspecific and chronic symptoms such as dizziness or fatigue. Conditions resulting in bradyarrhythmic disorders are divided into intrinsic and extrinsic conditions causing damage to the conduction system. Furthermore bradyarrhythmias can be a normal physiologic reaction under certain circumstances. ...
Anatomic and Electrocardiographic Position of the Heart
... position of the heart and a large angle, a vertical position of the heart. Rotation about Transverse Axis. A 7 foot left lateral teleroentgenogram of the chest was made with the subject in the supine position. On the developed film, a line was drawn from the cardiac apex to the center of the lower b ...
... position of the heart and a large angle, a vertical position of the heart. Rotation about Transverse Axis. A 7 foot left lateral teleroentgenogram of the chest was made with the subject in the supine position. On the developed film, a line was drawn from the cardiac apex to the center of the lower b ...
Diagnosis of Heart Failure in Adults
... Systolic dysfunction is caused by impaired myocardial contractility and low ejection fraction. It is associated most often with coronary artery disease (especially myocardial infarction), idiopathic dilated cardiomyopathy, hypertension, and valvular disease. The five types of heart failure resulting ...
... Systolic dysfunction is caused by impaired myocardial contractility and low ejection fraction. It is associated most often with coronary artery disease (especially myocardial infarction), idiopathic dilated cardiomyopathy, hypertension, and valvular disease. The five types of heart failure resulting ...
Heart Failure With Preserved Ejection Fraction
... with a goal of less than 2000 mg of salt per day and pro- ...
... with a goal of less than 2000 mg of salt per day and pro- ...
EXTERNAL PACEMAKER By Pat Hock, RN
... chamber. Epicardial wires are temporary wires that are surgically placed directly on the RA and /or RV after open heart surgery. The atrial wires exit on the right side of the chest, the ventricular wires exit on the left. The wires are unipolar; there must be two wires to complete the circuit. Expo ...
... chamber. Epicardial wires are temporary wires that are surgically placed directly on the RA and /or RV after open heart surgery. The atrial wires exit on the right side of the chest, the ventricular wires exit on the left. The wires are unipolar; there must be two wires to complete the circuit. Expo ...
Modeling pathologies of diastolic and systolic heart failure
... Figure 1 illustrates the Living Heart model, an anatomically accurate four-chamber model of the healthy human heart, that provides the basis for our simulation [5]. Figure 1, right, shows the underlying anatomic model created from magnetic resonance images of a healthy, 21-year old, 50th percentile ...
... Figure 1 illustrates the Living Heart model, an anatomically accurate four-chamber model of the healthy human heart, that provides the basis for our simulation [5]. Figure 1, right, shows the underlying anatomic model created from magnetic resonance images of a healthy, 21-year old, 50th percentile ...
Regional Mechanical Properties and Microstructure of Ovine Heart
... myocardium would allow efficient mechanical signal transfer from the myocardial environment to the tissue engineered cardiac grafts. Therefore, it is important to design engineered cardiac patches that match the mechanical properties of the native myocardium29. Moreover, heart failure is a highly pr ...
... myocardium would allow efficient mechanical signal transfer from the myocardial environment to the tissue engineered cardiac grafts. Therefore, it is important to design engineered cardiac patches that match the mechanical properties of the native myocardium29. Moreover, heart failure is a highly pr ...
Treatment of Congestive Heart failure
... needs of the body. The term “congestive heart failure” implies that the impaired blood flow is causing fluid retention in the lungs, legs, ankles or feet. Other common symptoms include shortness of breath when lying down or during exercise, fatigue and weakness, reduced exercise capacity, and rapid ...
... needs of the body. The term “congestive heart failure” implies that the impaired blood flow is causing fluid retention in the lungs, legs, ankles or feet. Other common symptoms include shortness of breath when lying down or during exercise, fatigue and weakness, reduced exercise capacity, and rapid ...
Module Five
... Bilateral edema usually indicates a systemic problem, such as congestive heart failure, or local causes such prolonged standing or sitting ...
... Bilateral edema usually indicates a systemic problem, such as congestive heart failure, or local causes such prolonged standing or sitting ...
normal children - Heart
... secondary to regional differences in left ventricular thickness to cavity radius, or "relative wall thickness" architecture rather than to any alteration in the at end-diastole,21, 22 remained constant throughout properties of the myocardial fibres themselves.20 childhood, varying over a similarly s ...
... secondary to regional differences in left ventricular thickness to cavity radius, or "relative wall thickness" architecture rather than to any alteration in the at end-diastole,21, 22 remained constant throughout properties of the myocardial fibres themselves.20 childhood, varying over a similarly s ...