Atrial Fibrillation - CardiacAndVascular.com
... Impaired blood flow to heart muscle (ischemia) Weakened heart muscle (cardiomyopathy) Damage to the heart from long-standing, untreated high blood pressure (hypertensive heart disease) ...
... Impaired blood flow to heart muscle (ischemia) Weakened heart muscle (cardiomyopathy) Damage to the heart from long-standing, untreated high blood pressure (hypertensive heart disease) ...
Images and Case Reports in Arrhythmia and Electrophysiology
... aneurysm proximal border and the mitral valve. When the endocardial circuit was localized, radiofrequency energy was delivered interrupting the VT. Late potentials could be seen on that site, and they were also targeted (Figure 4, right). An implantable cardioverter-defibrillator was implanted and t ...
... aneurysm proximal border and the mitral valve. When the endocardial circuit was localized, radiofrequency energy was delivered interrupting the VT. Late potentials could be seen on that site, and they were also targeted (Figure 4, right). An implantable cardioverter-defibrillator was implanted and t ...
Arrhythmogenic Right Ventricular Dysplasia/Cardiomyopathy
... Arrhythmogenic Right Ventricular Dysplasia (ARVD), also termed Arrhythmogenic Right Ventricular Cardiomiopathy (ARVC), is right ventricle myocardial disorder, whose causes are unknown, showing a frequent familial occurrence (1-5). The typical clinical manifestation consists of ventricular arrhythmia ...
... Arrhythmogenic Right Ventricular Dysplasia (ARVD), also termed Arrhythmogenic Right Ventricular Cardiomiopathy (ARVC), is right ventricle myocardial disorder, whose causes are unknown, showing a frequent familial occurrence (1-5). The typical clinical manifestation consists of ventricular arrhythmia ...
Congenital third-degree AV block in the infant with a ventricular rate
... Cons: Two leads required, response is not physiological, loss of larger generator, faster heart AVsynchrony, rates than VVIR, pacemaker mediated tachycardia ...
... Cons: Two leads required, response is not physiological, loss of larger generator, faster heart AVsynchrony, rates than VVIR, pacemaker mediated tachycardia ...
Prevalence of Left Ventricular Hypertrophy in Patients with Essential
... the incidence of lethal ventricular arrhythmias, ischaemic cardiopathy and acute myocardial infarction, constitutes an increased probability of sudden death and multiplies by 10 the frequency of congestive heart failure (7,8). Electrocardiographic signs of LVH are seen very late in the disease histo ...
... the incidence of lethal ventricular arrhythmias, ischaemic cardiopathy and acute myocardial infarction, constitutes an increased probability of sudden death and multiplies by 10 the frequency of congestive heart failure (7,8). Electrocardiographic signs of LVH are seen very late in the disease histo ...
itive sports that pose a danger of bodily collision because such
... 2. Athletes with a normal HV interval and a normal AV conduction response to pacing can participate in all competitive sports consistent with their cardiac status. 3. Athletes with abnormal AV conduction characterized by an HV interval greater than 90 ms or a HisPurkinje block should have pacemaker ...
... 2. Athletes with a normal HV interval and a normal AV conduction response to pacing can participate in all competitive sports consistent with their cardiac status. 3. Athletes with abnormal AV conduction characterized by an HV interval greater than 90 ms or a HisPurkinje block should have pacemaker ...
Saccular aneurysms of left ventricle - Heart
... In this report two patients with most unusual aneurysms of the left ventricle are described, and the subject of rare ventricular aneurysms (including both true aneurysm and pseudo-aneurysm formnation) is briefly discussed. In both patients the diagnosis of left ventricular aneurysm was unsuspected o ...
... In this report two patients with most unusual aneurysms of the left ventricle are described, and the subject of rare ventricular aneurysms (including both true aneurysm and pseudo-aneurysm formnation) is briefly discussed. In both patients the diagnosis of left ventricular aneurysm was unsuspected o ...
Template for BMJ Cases - ELSO 2016
... Ventricular arrhythmia refractory to treatment is a well recognized condition as an indication for cardiac transplantation (1), as did our patient after suffering ARVD (Figure 1). Among the possible complications in the perioperative period is described the PGF. It is related to the dose of vasopres ...
... Ventricular arrhythmia refractory to treatment is a well recognized condition as an indication for cardiac transplantation (1), as did our patient after suffering ARVD (Figure 1). Among the possible complications in the perioperative period is described the PGF. It is related to the dose of vasopres ...
Identification of ECG Arrhythmias using Phase Space Reconstruction
... reconstruction and machine learning techniques. Data was recorded from patients experiencing spontaneous arrhythmia, as well as, induced arrhythmia. The phase space attractors of the different rhythms were learned from both inter- and intra-patient arrhythmic episodes. Out-of-sample ECG rhythm recor ...
... reconstruction and machine learning techniques. Data was recorded from patients experiencing spontaneous arrhythmia, as well as, induced arrhythmia. The phase space attractors of the different rhythms were learned from both inter- and intra-patient arrhythmic episodes. Out-of-sample ECG rhythm recor ...
Saccular aneurysms of left ventricle
... In this report two patients with most unusual aneurysms of the left ventricle are described, and the subject of rare ventricular aneurysms (including both true aneurysm and pseudo-aneurysm formnation) is briefly discussed. In both patients the diagnosis of left ventricular aneurysm was unsuspected o ...
... In this report two patients with most unusual aneurysms of the left ventricle are described, and the subject of rare ventricular aneurysms (including both true aneurysm and pseudo-aneurysm formnation) is briefly discussed. In both patients the diagnosis of left ventricular aneurysm was unsuspected o ...
Restoration of Regional Wall Motion by
... the loading conditions of the ventricle. Distinct worsening of wall motion has been demonstrated following interventions such as atrial pacing and intravenously administered pr~pranolol.'~"In both cases, the mechanism was said to be due to an imbalance of the myocardial oxygen demand-tosupply ratio, ...
... the loading conditions of the ventricle. Distinct worsening of wall motion has been demonstrated following interventions such as atrial pacing and intravenously administered pr~pranolol.'~"In both cases, the mechanism was said to be due to an imbalance of the myocardial oxygen demand-tosupply ratio, ...
Sudden Death In the Structurally Normal Heart
... History of cardiac arrest or sustained VT Clinical signs of RV failure or LV involvement Patients with or having a family member with the high risk ARVD gene (ARVD2) • Increase in QRS dispersion ≥ 40 msec – QRS dispersion = max measured QRS minus min measured QRS ...
... History of cardiac arrest or sustained VT Clinical signs of RV failure or LV involvement Patients with or having a family member with the high risk ARVD gene (ARVD2) • Increase in QRS dispersion ≥ 40 msec – QRS dispersion = max measured QRS minus min measured QRS ...
Implantable Cardioverter Defibrillator
... Sudden Cardiac Death (SCD). Risk factors include syncope, nonsustained VT, family history of sudden death, 30 mm septal thickness, or abnormal blood pressure response to exercise. Arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C) and one or more risk factors for SCD, which include p ...
... Sudden Cardiac Death (SCD). Risk factors include syncope, nonsustained VT, family history of sudden death, 30 mm septal thickness, or abnormal blood pressure response to exercise. Arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C) and one or more risk factors for SCD, which include p ...
sudden cardiac death in structurally normal hearts
... (see Table). Most are caused by loss-of-function mutations in genes encoding proteins that form various K+ channels. The loss of function prolongs repolarization of the cardiac action potential (thereby increasing the QT interval on the surface ECG) and promotes arrhythmias by increasing the likelih ...
... (see Table). Most are caused by loss-of-function mutations in genes encoding proteins that form various K+ channels. The loss of function prolongs repolarization of the cardiac action potential (thereby increasing the QT interval on the surface ECG) and promotes arrhythmias by increasing the likelih ...
Reaxys Database Information
... Background: Insulin-like growth factor-1 (IGF-1), transforming growth factor β (TGFβ) and cyclins are thought to play a role in myocardial hypertrophic response to insults. We investigated these signaling pathways in canine models of ischemic or overpacing-induced cardiomyopathy. Methods: Echocardio ...
... Background: Insulin-like growth factor-1 (IGF-1), transforming growth factor β (TGFβ) and cyclins are thought to play a role in myocardial hypertrophic response to insults. We investigated these signaling pathways in canine models of ischemic or overpacing-induced cardiomyopathy. Methods: Echocardio ...
RIGHT ATRIAL PRESSURE AS A MEASURE OF VENTRICULAR
... measuring pericardial pressure using a balloon transducer but, as yet, no means of clinical assessment of ventricular constraint in the sick newborn exists. Nor is there a method for assessing the impact of mechanical ventilation on ventricular constraint. Aim: To determine if right atrial pressure ...
... measuring pericardial pressure using a balloon transducer but, as yet, no means of clinical assessment of ventricular constraint in the sick newborn exists. Nor is there a method for assessing the impact of mechanical ventilation on ventricular constraint. Aim: To determine if right atrial pressure ...
Cardiac physiology: mechanical events and regulation of cardiac
... - changes in inotropy are due to intrinsic cellular mechanisms that regulate interaction between actin and myosin independent of changes in sarcomere length - usually associated with changes in available calcium for muscle contraction Factors affecting inotropic state - activity of autonomic nerves ...
... - changes in inotropy are due to intrinsic cellular mechanisms that regulate interaction between actin and myosin independent of changes in sarcomere length - usually associated with changes in available calcium for muscle contraction Factors affecting inotropic state - activity of autonomic nerves ...
Atrial Fibrillation
... reduced and often congestive heart failure develops or recurs. These pets usually have very fast heart rate (more than 200 beats per min) which, if not controlled, can lead to additional heart muscle damage and dysfunction. How Is Atrial Fibrillation Treated? ...
... reduced and often congestive heart failure develops or recurs. These pets usually have very fast heart rate (more than 200 beats per min) which, if not controlled, can lead to additional heart muscle damage and dysfunction. How Is Atrial Fibrillation Treated? ...
management of patients with acute heart failure and atrial fibrillation
... Acute heart failure (AHF) patients are commonly encountered in intensive care units (ICUs) and their managements are challenging to intensivists. Atrial fibrillation (AF) is one of the most common cardiac rhythms among patients of AHF. It is estimated that 20% to 30% of AHF patients have rapid AF du ...
... Acute heart failure (AHF) patients are commonly encountered in intensive care units (ICUs) and their managements are challenging to intensivists. Atrial fibrillation (AF) is one of the most common cardiac rhythms among patients of AHF. It is estimated that 20% to 30% of AHF patients have rapid AF du ...
PDF Article - JACC: Cardiovascular Imaging
... Please note: This work is supported in part by the Rosetrees Trust Fund of the UK and The Brandman Foundation. The authors have reported that they have no relationships relevant to the contents of this paper to disclose. ...
... Please note: This work is supported in part by the Rosetrees Trust Fund of the UK and The Brandman Foundation. The authors have reported that they have no relationships relevant to the contents of this paper to disclose. ...
Goldman MJ (1986): Principles of Clinical Electrocardiography, 12th
... 9. The electrophysiological effect of ischemia on heart muscle is known. 10. The location of ischemia or infarction is governed by the anatomy of the coronary arteries. 11. There are a limited number of congenital cardiac abnormalities. ...
... 9. The electrophysiological effect of ischemia on heart muscle is known. 10. The location of ischemia or infarction is governed by the anatomy of the coronary arteries. 11. There are a limited number of congenital cardiac abnormalities. ...
Electrocardiogram
... Is normally isoelectric - no difference exists in electrical potential among the action potentials of the heart No current flow occurs because all cells are at zero potential T wave ...
... Is normally isoelectric - no difference exists in electrical potential among the action potentials of the heart No current flow occurs because all cells are at zero potential T wave ...
Noncompaction of the ventricular myocardium with bicuspid aortic
... and right atriums, and the right ventricle were normal. Transthoracic echocardiography showed mild thickening of the aortic valve cusps. However, mitral valve structure was found to be of normal appearance. A moderate aortic regurgitation and mild mitral regurgitation were detected by color Doppler ...
... and right atriums, and the right ventricle were normal. Transthoracic echocardiography showed mild thickening of the aortic valve cusps. However, mitral valve structure was found to be of normal appearance. A moderate aortic regurgitation and mild mitral regurgitation were detected by color Doppler ...
Antiarrythmic drugs
... to acceleration by the above mechanisms. However, all cardiac cells, including normally quiescent atrial and ventricular cells, may show repetitive pacemaker activity when depolarized under appropriate conditions, especially if hypokalemia is also present. Afterdepolarizations (the Figure below) are ...
... to acceleration by the above mechanisms. However, all cardiac cells, including normally quiescent atrial and ventricular cells, may show repetitive pacemaker activity when depolarized under appropriate conditions, especially if hypokalemia is also present. Afterdepolarizations (the Figure below) are ...
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.