I IIaIIbIII - Ochsner Health System
... Only consensus of experts opinion, case studies, or standard of care Very limited populations evaluated ...
... Only consensus of experts opinion, case studies, or standard of care Very limited populations evaluated ...
1 - Circulation Research
... Z. Roth. Figure 6 shows the results of condenser discharges applied in the absolute refractory period (AEP). The vertical axis shows kv linearly, the horizontal axis fxF in a logarithmic progression. The individual curves limit the areas of different degrees of functional damage of the myocardium. T ...
... Z. Roth. Figure 6 shows the results of condenser discharges applied in the absolute refractory period (AEP). The vertical axis shows kv linearly, the horizontal axis fxF in a logarithmic progression. The individual curves limit the areas of different degrees of functional damage of the myocardium. T ...
Structure and function of distance runners` heart
... distance runners' groups (see Table 2) let us to assume that the mastership of ultra-long distance runners, i.e. ability to perform for extended periods (to run 42 km or more at a considerable pace) is dependent not only upon anaerobic thresholds, which are more limited to the ability of working mus ...
... distance runners' groups (see Table 2) let us to assume that the mastership of ultra-long distance runners, i.e. ability to perform for extended periods (to run 42 km or more at a considerable pace) is dependent not only upon anaerobic thresholds, which are more limited to the ability of working mus ...
Effects of calcium, parathyroid hormone and
... It would thus seem reasonable to assume that uremic cardiomyopathy is related at least partially to secondary hyperparathyroidism and that HD-induced acute changes in serum calcium regulate LV function and electrical stability during treatment. The fact that patients with primary hyperparathyroidism ...
... It would thus seem reasonable to assume that uremic cardiomyopathy is related at least partially to secondary hyperparathyroidism and that HD-induced acute changes in serum calcium regulate LV function and electrical stability during treatment. The fact that patients with primary hyperparathyroidism ...
Relationship between Anemia and Diastolic Dysfunction of the Heart
... venous bed can be a substantial driving force for development of pulmonary hypertension. Because diastole comprises two-thirds of the cardiac cycle, diseases that elevate diastolic pressure are often more likely to be associated with secondary pulmonary hypertension than are diseases with isolated e ...
... venous bed can be a substantial driving force for development of pulmonary hypertension. Because diastole comprises two-thirds of the cardiac cycle, diseases that elevate diastolic pressure are often more likely to be associated with secondary pulmonary hypertension than are diseases with isolated e ...
CHAPTER 13 Electrocardiography
... ions. A positive current moving in one direction is equivalent to a negative current of equal strength moving in the opposite direction. Through a purely arbitrary choice, electrophysiological currents are considered to be the movement of positive charge. The process of generating the cardiac electr ...
... ions. A positive current moving in one direction is equivalent to a negative current of equal strength moving in the opposite direction. Through a purely arbitrary choice, electrophysiological currents are considered to be the movement of positive charge. The process of generating the cardiac electr ...
Spiral wave dynamics and ventricular arrhythmias
... a decrease of cardiac output and that may destabilize into ventricular fibrillation. Frequently occurring reentrant arrhythmias in the ventricles include monomorphic and polymorphic ventricular tachycardia and ventricular fibrillation. Monomorphic ventricular tachycardia and polymorphic ventricular ...
... a decrease of cardiac output and that may destabilize into ventricular fibrillation. Frequently occurring reentrant arrhythmias in the ventricles include monomorphic and polymorphic ventricular tachycardia and ventricular fibrillation. Monomorphic ventricular tachycardia and polymorphic ventricular ...
Caffeine and Cardiac Arrhythmias: A Review of the Evidence
... 1985 study in 18 patients with frequent premature ventricular complexes (PVC) and 18 controls found that when patients were given caffeine at a dose of 1 mg/kg each half-life for a 24-hour period, those with frequent PVCs at baseline had an increase in the number of PVC/hour from 207 ⫾ 350 PVC/hour ...
... 1985 study in 18 patients with frequent premature ventricular complexes (PVC) and 18 controls found that when patients were given caffeine at a dose of 1 mg/kg each half-life for a 24-hour period, those with frequent PVCs at baseline had an increase in the number of PVC/hour from 207 ⫾ 350 PVC/hour ...
RV Electrical Activation in Heart Failure During Right, Left, and
... JACC: CARDIOVASCULAR IMAGING, VOL. 3, NO. 6, 2010 JUNE 2010:567–75 ...
... JACC: CARDIOVASCULAR IMAGING, VOL. 3, NO. 6, 2010 JUNE 2010:567–75 ...
Intercellular Coupling Abnormalities in the Heart: Quantification from
... complex cardiac tissue structure and inaccurate measurement techniques. Diabetes mellitus is an example of a condition that can alter conduction velocity by reducing the electrical coupling between cardiac cells. Diabetes is also known to increase the risk of arrhythmia by increasing the action pote ...
... complex cardiac tissue structure and inaccurate measurement techniques. Diabetes mellitus is an example of a condition that can alter conduction velocity by reducing the electrical coupling between cardiac cells. Diabetes is also known to increase the risk of arrhythmia by increasing the action pote ...
Evaluation of transmural distribution of viable muscle by - AJP
... strain is obtained by evaluating the change of distance between pairs of two points defined on all pixels on the image by utilizing the displacement values. The distance of all two-pixel pairs at the initial time frame is equivalent to “L0” on the above equation and set at 3 mm in this study (17). T ...
... strain is obtained by evaluating the change of distance between pairs of two points defined on all pixels on the image by utilizing the displacement values. The distance of all two-pixel pairs at the initial time frame is equivalent to “L0” on the above equation and set at 3 mm in this study (17). T ...
Feasibility and effect of para-right bundle branch pacing in patients
... pacing group, the pacing leads were positioned near the RBB in the mid-septum. During the implantation of para-RBB pacing leads, a bipolar diagnostic electrophysiology (EP) catheter with 5 mm interelectrode spacing was introduced via the right femoral vein and was advanced to the septal aspect of RV ...
... pacing group, the pacing leads were positioned near the RBB in the mid-septum. During the implantation of para-RBB pacing leads, a bipolar diagnostic electrophysiology (EP) catheter with 5 mm interelectrode spacing was introduced via the right femoral vein and was advanced to the septal aspect of RV ...
Print - Circulation
... heart.1,20 On the other hand, ␣-N-catenin expression is restricted to neural tissues,18 whereas ␣-T-catenin expression is restricted to testis, muscle, and brain.20 ␣-E-catenin is the most widely studied, and although it is highly expressed in the heart, its functional importance is most notable in ...
... heart.1,20 On the other hand, ␣-N-catenin expression is restricted to neural tissues,18 whereas ␣-T-catenin expression is restricted to testis, muscle, and brain.20 ␣-E-catenin is the most widely studied, and although it is highly expressed in the heart, its functional importance is most notable in ...
Marcela Rosas-Nexticapa.pmd
... nifedipine. The results showed that the naphthalene derivative reduces infarct size compared with control. Other results showed that the naphthalene derivative significantly increase (p = 0.05) the perfusion pressure and coronary resistance in isolated heart. In addition, other data indicate that th ...
... nifedipine. The results showed that the naphthalene derivative reduces infarct size compared with control. Other results showed that the naphthalene derivative significantly increase (p = 0.05) the perfusion pressure and coronary resistance in isolated heart. In addition, other data indicate that th ...
I IIa IIb III - Cardiosource
... Only consensus of experts opinion, case studies, or standard of care Very limited populations evaluated ...
... Only consensus of experts opinion, case studies, or standard of care Very limited populations evaluated ...
June 2008 Volume 10, Number 6
... the His-Purkinje system (HPS) during the tachycardia. This intraventricular conduction delay may occur either due to preexisting bundle branch block or transient slowing of bundle branch conduction during tachycardic states (Diagrams 2 and 3). In either case, the intraventricular conduction delay pr ...
... the His-Purkinje system (HPS) during the tachycardia. This intraventricular conduction delay may occur either due to preexisting bundle branch block or transient slowing of bundle branch conduction during tachycardic states (Diagrams 2 and 3). In either case, the intraventricular conduction delay pr ...
Author`s Accepted Manuscript - HRS
... lower rate of atrial fibrillation (AF) and stroke.12 The benefit in terms of AF prevention was more marked ...
... lower rate of atrial fibrillation (AF) and stroke.12 The benefit in terms of AF prevention was more marked ...
T wave alternans in experimental myocardial infarction: Time course
... Not only the presence of post-infarction scar, but also the acute ischemia seems to be an important trigger of TWA as shown in another experiment, in which the presence of myocardial scar without acute ischemia was not associated with TWA at intrinsic heart rhythm but could be induced by rapid ventr ...
... Not only the presence of post-infarction scar, but also the acute ischemia seems to be an important trigger of TWA as shown in another experiment, in which the presence of myocardial scar without acute ischemia was not associated with TWA at intrinsic heart rhythm but could be induced by rapid ventr ...
(T-Tubules) In The Hamster {Mesocricetus Auratus
... natal life, myofibrils developed rapidly and the A-and I-bands became more distinct. By the seventh day, shallow indentations of the sarcolemma at the Z-line regions appeared, representing the early beginnings o f the T-system. Wide T-tubule invaginations of the sarcolemma with cross-sectional diame ...
... natal life, myofibrils developed rapidly and the A-and I-bands became more distinct. By the seventh day, shallow indentations of the sarcolemma at the Z-line regions appeared, representing the early beginnings o f the T-system. Wide T-tubule invaginations of the sarcolemma with cross-sectional diame ...
Unstable QT Interval Dynamics Precedes Ventricular Tachycardia
... detecting instability in QTI dynamics. The algorithm defines QTI dynamics as a function of both its preceding R-R interval (RRI) and activation history and assesses the stability of this function. Because the effect of short-term memory is included in the algorithm, the presented approach has an adv ...
... detecting instability in QTI dynamics. The algorithm defines QTI dynamics as a function of both its preceding R-R interval (RRI) and activation history and assesses the stability of this function. Because the effect of short-term memory is included in the algorithm, the presented approach has an adv ...
2012 focused update of the ESC Guidelines
... and a three-fold incidence of congestive heart failure, and higher mortality. Hospitalization of patients with AF is also very common. This arrhythmia is a major cardiovascular challenge in modern society and its medical, social and economic aspects are all set to worsen over the coming decades. For ...
... and a three-fold incidence of congestive heart failure, and higher mortality. Hospitalization of patients with AF is also very common. This arrhythmia is a major cardiovascular challenge in modern society and its medical, social and economic aspects are all set to worsen over the coming decades. For ...
2012 focused update of the ESC Guidelines for the management of
... and a three-fold incidence of congestive heart failure, and higher mortality. Hospitalization of patients with AF is also very common. This arrhythmia is a major cardiovascular challenge in modern society and its medical, social and economic aspects are all set to worsen over the coming decades. For ...
... and a three-fold incidence of congestive heart failure, and higher mortality. Hospitalization of patients with AF is also very common. This arrhythmia is a major cardiovascular challenge in modern society and its medical, social and economic aspects are all set to worsen over the coming decades. For ...
General Questions about AEDs 1. What does AED stand for? AED
... An AED is a device used to administer an electric shock through the chest wall to the heart. Builtin computers assess the patient's heart rhythm, judge whether defibrillation is needed, and then administer the shock. Audible and/or visual prompts guide the user through the process. 3. How doe ...
... An AED is a device used to administer an electric shock through the chest wall to the heart. Builtin computers assess the patient's heart rhythm, judge whether defibrillation is needed, and then administer the shock. Audible and/or visual prompts guide the user through the process. 3. How doe ...
2012 focused update of the ESC Guidelines for the management of
... and a three-fold incidence of congestive heart failure, and higher mortality. Hospitalization of patients with AF is also very common. This arrhythmia is a major cardiovascular challenge in modern society and its medical, social and economic aspects are all set to worsen over the coming decades. For ...
... and a three-fold incidence of congestive heart failure, and higher mortality. Hospitalization of patients with AF is also very common. This arrhythmia is a major cardiovascular challenge in modern society and its medical, social and economic aspects are all set to worsen over the coming decades. For ...
Focused update 2012 on atrial fibrillation
... and a three-fold incidence of congestive heart failure, and higher mortality. Hospitalization of patients with AF is also very common. This arrhythmia is a major cardiovascular challenge in modern society and its medical, social and economic aspects are all set to worsen over the coming decades. For ...
... and a three-fold incidence of congestive heart failure, and higher mortality. Hospitalization of patients with AF is also very common. This arrhythmia is a major cardiovascular challenge in modern society and its medical, social and economic aspects are all set to worsen over the coming decades. For ...
Ventricular fibrillation
Ventricular fibrillation (V-fib or VF) is a condition in which there is uncoordinated contraction of the cardiac muscle of the ventricles in the heart, making them quiver rather than contract properly. Ventricular fibrillation is the most commonly identified arrhythmia in cardiac arrest patients. While there is some activity, the lay person is usually unable to detect it by palpating (feeling) the major pulse points of the carotid and femoral arteries. Such an arrhythmia is only confirmed by electrocardiography. Ventricular fibrillation is a medical emergency that requires prompt Advanced Life Support interventions. If this arrhythmia continues for more than a few seconds, it will likely degenerate further into asystole (""flatline""). This condition results in cardiogenic shock and cessation of effective blood circulation. As a consequence, sudden cardiac death (SCD) will result in a matter of minutes. If the patient is not revived after a sufficient period (within roughly 5 minutes at room temperature), the patient could sustain irreversible brain damage and possibly become brain-dead, due to the effects of cerebral hypoxia. On the other hand, death often occurs if sinus rhythm is not restored within 90 seconds of the onset of VF, especially if it has degenerated further into asystole.