Provisional PDF - BioMed Central
... Recent data suggests that diagnostic features of ARVC/D such as epsilon waves and T wave inversions (TWI) may disappear on serial ECG evaluations during follow-up [8], although ARVC/D is generally considered an irreversible and progressive cardiomyopathy [9-11]. TWI in inferior leads have recently b ...
... Recent data suggests that diagnostic features of ARVC/D such as epsilon waves and T wave inversions (TWI) may disappear on serial ECG evaluations during follow-up [8], although ARVC/D is generally considered an irreversible and progressive cardiomyopathy [9-11]. TWI in inferior leads have recently b ...
Print this article - Medical Journal of Indonesia
... Intracardiac thrombus, for example left atrial and left ventricular thrombus, is associated with several conditions especially low flow states such as in mitral stenosis, atrial fibrillation, and ischemic heart disease.1–4 Increased morbidity and mortality are associated with its embolization.3–6 Th ...
... Intracardiac thrombus, for example left atrial and left ventricular thrombus, is associated with several conditions especially low flow states such as in mitral stenosis, atrial fibrillation, and ischemic heart disease.1–4 Increased morbidity and mortality are associated with its embolization.3–6 Th ...
Atrial antitachycardia pacing and managed ventricular pacing in
... permanent AF, and candidacy for defibrillator or cardiac resynchronization therapy device implantation, uncontrolled hyperthyroidism, anticipated major cardiac surgery, AF ablation, or other cardiac surgery. Other exclusion criteria, common to randomized trials are reported in detail in Supplementar ...
... permanent AF, and candidacy for defibrillator or cardiac resynchronization therapy device implantation, uncontrolled hyperthyroidism, anticipated major cardiac surgery, AF ablation, or other cardiac surgery. Other exclusion criteria, common to randomized trials are reported in detail in Supplementar ...
ECG, ANN, PhysioData Net, Classification, MIT-BIH.
... The second phase gives information on line value where values are self-resigned. The data comes from MIT-BIH for analysis. The success rate of classification for set 2, set 3, set 4, set 5 and set 7 is 100%, for set 1 it is 87.5% and for set 6 it is 75%. Xu et al. in [11] proposed that Slope Vector ...
... The second phase gives information on line value where values are self-resigned. The data comes from MIT-BIH for analysis. The success rate of classification for set 2, set 3, set 4, set 5 and set 7 is 100%, for set 1 it is 87.5% and for set 6 it is 75%. Xu et al. in [11] proposed that Slope Vector ...
Systolic and Diastolic Myocardial Mechanics in Patients with
... Background: There are few data on the impact of left ventricular (LV) filling pressure on systolic and diastolic myocardial mechanics in patients with cardiac disease and preserved LV ejection fraction (LVEF) ($50%). Methods: Patients referred for cardiac catheterization underwent comprehensive echo ...
... Background: There are few data on the impact of left ventricular (LV) filling pressure on systolic and diastolic myocardial mechanics in patients with cardiac disease and preserved LV ejection fraction (LVEF) ($50%). Methods: Patients referred for cardiac catheterization underwent comprehensive echo ...
Sudden Cardiac Death
... to an acute increase in susceptibility to ventricular fibrillation.23 In contrast, regular vigorous exertion increases vasovagal tone, resulting in increased cardiac electrical stability and protection against ventricular fibrillation.24 Cardiac arrest occurs at a rate of 1 per 12,000 to 15,000 duri ...
... to an acute increase in susceptibility to ventricular fibrillation.23 In contrast, regular vigorous exertion increases vasovagal tone, resulting in increased cardiac electrical stability and protection against ventricular fibrillation.24 Cardiac arrest occurs at a rate of 1 per 12,000 to 15,000 duri ...
the time course of repolarisation (and hence refrac - Heart
... The duration of the monophasic action potential is shortened by both an increase in heart rate and ischaemia. Any protocol devised to study ischaemia is thereby complicated by the effect on the action potential duration of changes in cycle length. The aim of the study was to see whether it was possi ...
... The duration of the monophasic action potential is shortened by both an increase in heart rate and ischaemia. Any protocol devised to study ischaemia is thereby complicated by the effect on the action potential duration of changes in cycle length. The aim of the study was to see whether it was possi ...
Effects of Low and High Concentrations of Potassium on the
... concentration is increased above ca. 5.0 mM, the amplitude, upstroke velocity, and duration of both Purkinje and ventricular action potentials are decreased, the resting potential of both types of fibers becomes less negative, and diastolic depolarization is suppressed in the Purkinje fiber (7-12). ...
... concentration is increased above ca. 5.0 mM, the amplitude, upstroke velocity, and duration of both Purkinje and ventricular action potentials are decreased, the resting potential of both types of fibers becomes less negative, and diastolic depolarization is suppressed in the Purkinje fiber (7-12). ...
Retrograde Conduction to the Atria
... Case 6. Simultaneous lead II and bipolar esophageal lead above. Simultaneous lead II and V esophageal lead below. Retrograde P waves marked by arrows. Top. Ventricular tachycardia with V-A conduction, Wenckebach phenomenon. The second, third, fifth, sixth, and seventh ectopic beats are followed by r ...
... Case 6. Simultaneous lead II and bipolar esophageal lead above. Simultaneous lead II and V esophageal lead below. Retrograde P waves marked by arrows. Top. Ventricular tachycardia with V-A conduction, Wenckebach phenomenon. The second, third, fifth, sixth, and seventh ectopic beats are followed by r ...
Myocardial hypertrophy and its role in heart failure with preserved
... 2015. First published July 16, 2015; doi:10.1152/japplphysiol.00374.2015.—Left ventricular hypertrophy (LVH) is the most common myocardial structural abnormality associated with heart failure with preserved ejection fraction (HFpEF). LVH is driven by neurohumoral activation, increased mechanical loa ...
... 2015. First published July 16, 2015; doi:10.1152/japplphysiol.00374.2015.—Left ventricular hypertrophy (LVH) is the most common myocardial structural abnormality associated with heart failure with preserved ejection fraction (HFpEF). LVH is driven by neurohumoral activation, increased mechanical loa ...
MR Study of Myocardial Fiber Structure Using Diffusion Tensor
... In normal hearts, most fiber bundles, particularly those having long pathways in myocardium, tend to have small helix angles and spiral circumferentially in mid-wall. The fiber pathways at middle and upper ventricle are longer than those near apex. The findings suggest that these mid-wall fibers dom ...
... In normal hearts, most fiber bundles, particularly those having long pathways in myocardium, tend to have small helix angles and spiral circumferentially in mid-wall. The fiber pathways at middle and upper ventricle are longer than those near apex. The findings suggest that these mid-wall fibers dom ...
Ventricular free wall rupture after myocardial infarction
... because the denominators used in different studies were dissimilar. Some studies might not have utilised the appropriate denominator. For example, scientific papers based on autopsy studies presented the data as the number of VFWR expressed as a percentage of the total number of autopsies. This kind ...
... because the denominators used in different studies were dissimilar. Some studies might not have utilised the appropriate denominator. For example, scientific papers based on autopsy studies presented the data as the number of VFWR expressed as a percentage of the total number of autopsies. This kind ...
Chest Compressions Cause Recurrence of Ventricular Fibrillation
... ventricular fibrillation (VF). Methods and Results—This study used data of a prospective per-patient randomized controlled trial. Automated external defibrillators used by first responders were randomized to either (1) perform postshock analysis and prompt rescuers to a pulse check (GL2000), or (2) ...
... ventricular fibrillation (VF). Methods and Results—This study used data of a prospective per-patient randomized controlled trial. Automated external defibrillators used by first responders were randomized to either (1) perform postshock analysis and prompt rescuers to a pulse check (GL2000), or (2) ...
Article - Johns Hopkins Medicine
... develops more gradually as a function of time while receiving a constant dose (11). Short-term amiodarone administration also blocks sodium channels (making the threshold voltage for activation more positive), thereby reducing automaticity (ectopic triggers) and prolonging conduction velocity (lengt ...
... develops more gradually as a function of time while receiving a constant dose (11). Short-term amiodarone administration also blocks sodium channels (making the threshold voltage for activation more positive), thereby reducing automaticity (ectopic triggers) and prolonging conduction velocity (lengt ...
Special Report
... Abstract—The National Heart, Lung, and Blood Institute convened an expert panel April 28 to 29, 2008, to identify gaps and recommend research strategies to prevent atrial fibrillation (AF). The panel reviewed the existing basic scientific, epidemiological, and clinical literature about AF and identi ...
... Abstract—The National Heart, Lung, and Blood Institute convened an expert panel April 28 to 29, 2008, to identify gaps and recommend research strategies to prevent atrial fibrillation (AF). The panel reviewed the existing basic scientific, epidemiological, and clinical literature about AF and identi ...
Timely Pulmonary Valve Replacement May Allow Preservation of
... distribution. Pre- and post-PVR conditions were compared by Wilcoxon signed-rank tests for non-normally distributed variables, and paired sample t-tests were used for normally distributed variables. Independent sample t-tests were used for comparisons between patient groups. Coefficients of variatio ...
... distribution. Pre- and post-PVR conditions were compared by Wilcoxon signed-rank tests for non-normally distributed variables, and paired sample t-tests were used for normally distributed variables. Independent sample t-tests were used for comparisons between patient groups. Coefficients of variatio ...
A new electric method for non-invasive continuous monitoring of
... In intensive care medicine, the measurement of left ventricular stroke volume (SV) and cardiac output (CO) is important in the hemodynamic management of peri-operative and critically ill patients. Pulmonary artery thermodilution CO monitoring using the pulmonary artery catheter has major disadvantag ...
... In intensive care medicine, the measurement of left ventricular stroke volume (SV) and cardiac output (CO) is important in the hemodynamic management of peri-operative and critically ill patients. Pulmonary artery thermodilution CO monitoring using the pulmonary artery catheter has major disadvantag ...
Quinidine for Pharmacological Cardioversion of Atrial Fibrillation: A
... hepatic failure, n = 1). In this meta-analysis,15 studies were only included if they had administered quinidine chronically for maintenance of sinus rhythm for at least 3 months after cardioversion. As the time of death is not reported and as the exact cause of death was not known in 42% of the quin ...
... hepatic failure, n = 1). In this meta-analysis,15 studies were only included if they had administered quinidine chronically for maintenance of sinus rhythm for at least 3 months after cardioversion. As the time of death is not reported and as the exact cause of death was not known in 42% of the quin ...
images/Long term effects of RV pacing.pps
... The findings of the PAVE study suggest that, in order to avoid the adverse effects of ...
... The findings of the PAVE study suggest that, in order to avoid the adverse effects of ...
Surgical Ablation of Atrial Fibrillation during Mitral
... the Medical Outcomes Study 12-Item Short Form Health Survey [SF-12]), and rehospitalization. The primary safety end point was a composite of death, stroke, heart failure, myocardial infarction, rehospitalization for cardiac causes, ...
... the Medical Outcomes Study 12-Item Short Form Health Survey [SF-12]), and rehospitalization. The primary safety end point was a composite of death, stroke, heart failure, myocardial infarction, rehospitalization for cardiac causes, ...
Y.Q. Zhou, F.S. Foster, R. Parkes, S.L. Adamson. Developmental
... pregnant mice. Heart rate and body temperature were monitored as above in the postweaning group. Heat and anesthetic settings were the same in the neonatal and preweaning groups, but heart rate and body temperature were not monitored. Any hair on the precordial region was cleanly shaved, and the reg ...
... pregnant mice. Heart rate and body temperature were monitored as above in the postweaning group. Heat and anesthetic settings were the same in the neonatal and preweaning groups, but heart rate and body temperature were not monitored. Any hair on the precordial region was cleanly shaved, and the reg ...
Cardiomyopathies as a Cause of Sudden Cardiac Death (SCD) in
... about cardiomyopathies as a cause of sudden cardiac death in Egypt. This may have important implications in planning strategies for prevention. As reported in the presented autopsy series during the study period, it was found that the contribution of cardiomyopathies among other causes of sudden car ...
... about cardiomyopathies as a cause of sudden cardiac death in Egypt. This may have important implications in planning strategies for prevention. As reported in the presented autopsy series during the study period, it was found that the contribution of cardiomyopathies among other causes of sudden car ...
Evolutionary Optimization of Atrial Fibrillation Diagnostic Algorithms
... Sanoski [30] showed that around 40% of patients diagnosed with AF did not have ...
... Sanoski [30] showed that around 40% of patients diagnosed with AF did not have ...
Syncope in patients with structural heart disease
... ST depression) or a new infarction (ST elevation). In addition, the presence of Q waves should be noted as an indication of a prior myocardial infarction or a myocardial scar. Changes suggestive of left ventricular hypertrophy might be present on the ECG. The QT interval should be measured and evalu ...
... ST depression) or a new infarction (ST elevation). In addition, the presence of Q waves should be noted as an indication of a prior myocardial infarction or a myocardial scar. Changes suggestive of left ventricular hypertrophy might be present on the ECG. The QT interval should be measured and evalu ...
Targeting calcium transport in ischaemic heart disease
... Thomas Lewis clearly described relative ischaemia in contrast to the absolute ischaemia that follows total coronary obstruction.31 However, the worldwide morbidity and mortality with MI have led the experts to redefine MI in 2007,1 and it is now phrased that ‘the term myocardial infarction should be ...
... Thomas Lewis clearly described relative ischaemia in contrast to the absolute ischaemia that follows total coronary obstruction.31 However, the worldwide morbidity and mortality with MI have led the experts to redefine MI in 2007,1 and it is now phrased that ‘the term myocardial infarction should be ...
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.