Arrhythmogenic Disorders of Genetic Origin
... further compounded by allelic heterogeneity, whereby different mutations within the same gene have been shown to cause DCM, with most being private to individual families. ...
... further compounded by allelic heterogeneity, whereby different mutations within the same gene have been shown to cause DCM, with most being private to individual families. ...
Nano-imaging of the beating mouse heart in vivo
... Sarcomeric contraction in cardiomyocytes serves as the basis for the heart’s pump functions in mammals. Although it plays a critical role in the circulatory system, myocardial sarcomere length (SL) change has not been directly measured in vivo under physiological conditions because of technical diff ...
... Sarcomeric contraction in cardiomyocytes serves as the basis for the heart’s pump functions in mammals. Although it plays a critical role in the circulatory system, myocardial sarcomere length (SL) change has not been directly measured in vivo under physiological conditions because of technical diff ...
Congenital Heart Disease Linked to Maternal Autoimmunity
... ongenital heart disease (CHD) is the most common cause of infant death resulting from birth defects (1). Hypoplastic left heart syndrome (HLHS), a severe and devastating congenital heart malformation, accounts for nearly 25% of all neonatal deaths from CHD (1–3). HLHS is uniformly fatal without inte ...
... ongenital heart disease (CHD) is the most common cause of infant death resulting from birth defects (1). Hypoplastic left heart syndrome (HLHS), a severe and devastating congenital heart malformation, accounts for nearly 25% of all neonatal deaths from CHD (1–3). HLHS is uniformly fatal without inte ...
The importance of long axis function
... innovations in the field, and more than 25 million echocardiographic investigations are now performed worldwide each year using high-technological ultrasound machines [2]. Dilated cardiomyopathy (DCM) Echocardiography appears to be the most helpful tool to diagnose different forms of myocardial dise ...
... innovations in the field, and more than 25 million echocardiographic investigations are now performed worldwide each year using high-technological ultrasound machines [2]. Dilated cardiomyopathy (DCM) Echocardiography appears to be the most helpful tool to diagnose different forms of myocardial dise ...
Effects of Verapamil, Zatebradine, and E
... the 4th intercostal space and covered with a plastic sheet to keep a constant temperature of the heart. Each cervical vagus nerve was ligated tightly and crushed at the neck, and each stellate ganglion was crushed with a tight ligature at its junction with the ansa subclavia. These maneuvers remove ...
... the 4th intercostal space and covered with a plastic sheet to keep a constant temperature of the heart. Each cervical vagus nerve was ligated tightly and crushed at the neck, and each stellate ganglion was crushed with a tight ligature at its junction with the ansa subclavia. These maneuvers remove ...
Prevention of Atrial Fibrillation by Renin
... prevention of AF but acknowledges the fact that some of the primary prevention trials were post-hoc analyses. Further areas of uncertainty include potential differences among specific RAS inhibitors and possible interactions or synergistic effects with antiarrhythmic drugs. (J Am Coll Cardiol 2010;5 ...
... prevention of AF but acknowledges the fact that some of the primary prevention trials were post-hoc analyses. Further areas of uncertainty include potential differences among specific RAS inhibitors and possible interactions or synergistic effects with antiarrhythmic drugs. (J Am Coll Cardiol 2010;5 ...
Breakdown of blood pressure and body fluid homeostasis in
... medications were used ‘cJ the transplant recipients. None of rhe carma control subjects received medication at the time of the srudy. The protocol was approved by the institutional review board for the protection of human subjects at the University of Florida College of Medicine, and all subjects pr ...
... medications were used ‘cJ the transplant recipients. None of rhe carma control subjects received medication at the time of the srudy. The protocol was approved by the institutional review board for the protection of human subjects at the University of Florida College of Medicine, and all subjects pr ...
lxxi. the isolation of histamine from
... until no further precipitate was produced. The filtrate and washings from this precipitate, after removal of lead as sulphide, were concentrated in vacuo to 100 cc. when a further. 1-65 g. creatine separated. After removal of creatine, 50 % sulphuric acid was added to produce a concentration of 5 %. ...
... until no further precipitate was produced. The filtrate and washings from this precipitate, after removal of lead as sulphide, were concentrated in vacuo to 100 cc. when a further. 1-65 g. creatine separated. After removal of creatine, 50 % sulphuric acid was added to produce a concentration of 5 %. ...
Brain natriuretic peptide and optimal management of heart
... have reduced BNP concentrations while others have sustained BNP concentration. The reduction of BNP may precede the alteration of ventricular sizes and therefore sensitively indicate an effective therapeutic strategy. The concept of BNP guided therapy is based on the two randomized trials. Whether t ...
... have reduced BNP concentrations while others have sustained BNP concentration. The reduction of BNP may precede the alteration of ventricular sizes and therefore sensitively indicate an effective therapeutic strategy. The concept of BNP guided therapy is based on the two randomized trials. Whether t ...
Regression Analysis Between Heart Rate Variability and Baroreflex
... single-fiber recordings) with the HF. There were insignificant differences between the right- and left-side baroreflex-related vagus nerve recordings. Conclusion: Our present study provides a direct linkage between the HF and vagus neuronal electrical activity in anesthetized rats. (J Cardiovasc Ele ...
... single-fiber recordings) with the HF. There were insignificant differences between the right- and left-side baroreflex-related vagus nerve recordings. Conclusion: Our present study provides a direct linkage between the HF and vagus neuronal electrical activity in anesthetized rats. (J Cardiovasc Ele ...
Arrhythmias and EKGs
... •VT that is hemodynamically stable •VT that is not hemodynamically stable •Cardiac arrest ♥ Asystolic (sinus arrest, atrioventricular block) ♥ VT ♥ Ventricular fibrillation (VF) ♥ Pulseless electrical activity ...
... •VT that is hemodynamically stable •VT that is not hemodynamically stable •Cardiac arrest ♥ Asystolic (sinus arrest, atrioventricular block) ♥ VT ♥ Ventricular fibrillation (VF) ♥ Pulseless electrical activity ...
Holter Monitoring for QT: Types of Analyses and
... the right hand). The range of beat-to-beat QT intervals typically seen with RR bin is of course much smaller and reduced to only few milliseconds, particularly when a stable model is imposed. The beat-to-beat distribution of Figure 6a is not symmetric and it has faster descend at QT intervals higher ...
... the right hand). The range of beat-to-beat QT intervals typically seen with RR bin is of course much smaller and reduced to only few milliseconds, particularly when a stable model is imposed. The beat-to-beat distribution of Figure 6a is not symmetric and it has faster descend at QT intervals higher ...
Diagnosis and ablation of atypical atrial tachycardia and flutter
... successfully ablated with a single application of radiofrequency energy. In a series of 116 macroreentrant atrial tachycardias that started several days to weeks after circumferential pulmonary vein ablation for paroxysmal or persistent atrial fibrillation, the most common type was a perimitral tach ...
... successfully ablated with a single application of radiofrequency energy. In a series of 116 macroreentrant atrial tachycardias that started several days to weeks after circumferential pulmonary vein ablation for paroxysmal or persistent atrial fibrillation, the most common type was a perimitral tach ...
Effects of prolonged anoxia on electrical activity of the heart in
... Contraction of the vertebrate heart is initiated and regulated by the orderly spread of electrical excitation through atrial and ventricular myocardia (Coraboeuf, 1978). In fish, the rate and rhythm of the heartbeat is determined by spontaneous activity of the ring-shaped pacemaker tissue at the bor ...
... Contraction of the vertebrate heart is initiated and regulated by the orderly spread of electrical excitation through atrial and ventricular myocardia (Coraboeuf, 1978). In fish, the rate and rhythm of the heartbeat is determined by spontaneous activity of the ring-shaped pacemaker tissue at the bor ...
Cardiac function of - Graduate School of Biomedical Sciences
... humid and high in carbon dioxide (6). NMRs exhibit many adaptations to this hostile milieu, including a low basal metabolic rate (9, 15), thermolability (9), and extreme tolerance to hypercapnia and variable oxygen availability (12, 25, 35). This harsh habitat at the same time provides substantial p ...
... humid and high in carbon dioxide (6). NMRs exhibit many adaptations to this hostile milieu, including a low basal metabolic rate (9, 15), thermolability (9), and extreme tolerance to hypercapnia and variable oxygen availability (12, 25, 35). This harsh habitat at the same time provides substantial p ...
Cardiac Rhythms
... • usually between 0.36 and 0.44 second • varies greatly according to age, gender ,heart rate, and whether the patient is asleep • should be less than 1/2 the distance between two consecutive R waves (R-R interval) when the rhythm is regular Prolonged QT interval: Repolarization means that the muscle ...
... • usually between 0.36 and 0.44 second • varies greatly according to age, gender ,heart rate, and whether the patient is asleep • should be less than 1/2 the distance between two consecutive R waves (R-R interval) when the rhythm is regular Prolonged QT interval: Repolarization means that the muscle ...
QRS Complexes (Fast and Easy ECGs, Shade / Wesley)
... • Amplitude of a normal QRS is 5 to 30 mm and the duration is 0.06 to 0.12 seconds. • Q wave is first negative deflection from baseline following the P wave. • R wave is the first positive deflection following the Q wave (the P wave if Q wave is absent). • S wave is first negative deflection tha ...
... • Amplitude of a normal QRS is 5 to 30 mm and the duration is 0.06 to 0.12 seconds. • Q wave is first negative deflection from baseline following the P wave. • R wave is the first positive deflection following the Q wave (the P wave if Q wave is absent). • S wave is first negative deflection tha ...
Regulation of Cardiac Output by Stroke Volume and Heart Rate in
... was repeated several days later, substituting dobutamine (20 jiig/kg per min) for isoproterenol. On separate days, the inotropic agents were infused in the absence of volume loading. The effects of volume loading also were studied in four of the dogs with open chests after implantation of the electr ...
... was repeated several days later, substituting dobutamine (20 jiig/kg per min) for isoproterenol. On separate days, the inotropic agents were infused in the absence of volume loading. The effects of volume loading also were studied in four of the dogs with open chests after implantation of the electr ...
Do clinically relevant transthoracic defibrillation energies cause
... arrhythmia varies. Unlike internal defibrillators, which are tested at implantation, efficacy of an external defibrillator is determined only once, when it is most needed. This review discusses shock damage and dysfunction caused by monophasic waveforms as well as biphasic waveforms. Evidence is pre ...
... arrhythmia varies. Unlike internal defibrillators, which are tested at implantation, efficacy of an external defibrillator is determined only once, when it is most needed. This review discusses shock damage and dysfunction caused by monophasic waveforms as well as biphasic waveforms. Evidence is pre ...
Sudeen Cardiac Arrest Monograph
... system malfunctions, causing arrhythmias. The most common arrhythmia in cardiac arrest is ventricular fibrillation. Cardiac arrest may be reversed if CPR (cardiopulmonary resuscitation) is performed and a defibrillator is used to shock the heart and restore a normal heart rhythm within a few minutes ...
... system malfunctions, causing arrhythmias. The most common arrhythmia in cardiac arrest is ventricular fibrillation. Cardiac arrest may be reversed if CPR (cardiopulmonary resuscitation) is performed and a defibrillator is used to shock the heart and restore a normal heart rhythm within a few minutes ...
Determinants of Duration and Mean Rate of Ventricular Ejection
... of ventricular filling. One interesting implication of this relates to the dynamic alterations accompanying mitral or tricuspid stenosis. In addition to the well-appreciated effect of heart rate on the time available for mitral valve flow, it becomes evident that an increase in stroke volume at any ...
... of ventricular filling. One interesting implication of this relates to the dynamic alterations accompanying mitral or tricuspid stenosis. In addition to the well-appreciated effect of heart rate on the time available for mitral valve flow, it becomes evident that an increase in stroke volume at any ...
Effects of obstructive sleep apnoea on heart rhythm REVIEW
... Obstructive apnoea and hypopnoea are associated with repeated inspiratory efforts against the collapsed upper airways producing considerable negative intrathoracic pressure, which may be as low as -80 mmHg. This mechanism, repeated during each apnoeic phase, may stretch the cardiac wall and intratho ...
... Obstructive apnoea and hypopnoea are associated with repeated inspiratory efforts against the collapsed upper airways producing considerable negative intrathoracic pressure, which may be as low as -80 mmHg. This mechanism, repeated during each apnoeic phase, may stretch the cardiac wall and intratho ...
PERICARDIAL EFFUSION IN CANINE PATIENTS
... Electrocardiography (ECG) can also be a useful diagnostic tool, especially when determining the presence of cardiac tamponade. • Low-voltage (small) QRS complexes are common. Reduced voltage can also be caused by pneumothorax, emphysema, and infiltrative myocardial disease.5 • Electrical alternans o ...
... Electrocardiography (ECG) can also be a useful diagnostic tool, especially when determining the presence of cardiac tamponade. • Low-voltage (small) QRS complexes are common. Reduced voltage can also be caused by pneumothorax, emphysema, and infiltrative myocardial disease.5 • Electrical alternans o ...
New Observation of Electrocardiogram During Sinus Rhythm on the
... years). One had Ebstein anomaly; none of the others had underlying cardiac disease. We also analyzed the 12-lead ECGs during sinus rhythm in 200 individuals with palpitations and without structural heart disease, matched for age and gender as a control group. ...
... years). One had Ebstein anomaly; none of the others had underlying cardiac disease. We also analyzed the 12-lead ECGs during sinus rhythm in 200 individuals with palpitations and without structural heart disease, matched for age and gender as a control group. ...
Theme: «CARDIAC INSUFFICIENCY»
... Myogenic dilatation arises up at the dystrophic changes of myocardium. It is characterized by expansion of cavities of heart and decline of force of cardiac contractions. Arises up during decompensation of cardiac insufficiency. Acute cardiac insufficiency develops quickly, at the surplus loading on ...
... Myogenic dilatation arises up at the dystrophic changes of myocardium. It is characterized by expansion of cavities of heart and decline of force of cardiac contractions. Arises up during decompensation of cardiac insufficiency. Acute cardiac insufficiency develops quickly, at the surplus loading on ...