Left ventricular long-axis changes in early diastole
... are available that relate long-axis changes in systole with those in diastole, particularly in subjects with diastolic dysfunction and a ‘ normal ’ left ventricular (LV) ejection fraction. A total of 311 subjects (including 105 normal healthy volunteers) aged 20–89 years with variable degrees of sys ...
... are available that relate long-axis changes in systole with those in diastole, particularly in subjects with diastolic dysfunction and a ‘ normal ’ left ventricular (LV) ejection fraction. A total of 311 subjects (including 105 normal healthy volunteers) aged 20–89 years with variable degrees of sys ...
T The Basics of Neonatal EKG Interpretation C
... (although invaluable as a screening tool for rate and rhythm) should not be used to diagnose cardiac conditions. A 12-lead EKG is necessary for accurate diagnosis of cardiac conditions. The 12-lead EKG is one important tool used in the complete cardiac evaluation of the newborn. The electrical recor ...
... (although invaluable as a screening tool for rate and rhythm) should not be used to diagnose cardiac conditions. A 12-lead EKG is necessary for accurate diagnosis of cardiac conditions. The 12-lead EKG is one important tool used in the complete cardiac evaluation of the newborn. The electrical recor ...
Level of Evidence
... Existing Guideline: “If the arrest rhythm was VF or VT and no antiarrhythmic treatment was given, consider use of Lidocaine followed by maintenance infusion unless contraindicated (i.e., in patients with ventricular escape rhythm) and continue the infusion for several hours while primary ventricular ...
... Existing Guideline: “If the arrest rhythm was VF or VT and no antiarrhythmic treatment was given, consider use of Lidocaine followed by maintenance infusion unless contraindicated (i.e., in patients with ventricular escape rhythm) and continue the infusion for several hours while primary ventricular ...
The right ventricle following prolonged endurance exercise: are we
... Gerche A. Br J Sports Med Published Online First: [please include Day Month Year] doi:10.1136/bjsports2014-093895 ...
... Gerche A. Br J Sports Med Published Online First: [please include Day Month Year] doi:10.1136/bjsports2014-093895 ...
Epinephrine infusion in the evaluation of unexplained cardiac arrest
... eligible for enrollment if they had experienced an UCA with documented cardiovascular collapse, with ventricular tachycardia (VT) or fibrillation requiring direct current (DC) cardioversion or defibrillation to restore sinus rhythm. Follow-up testing demonstrated normal left ventricular function (le ...
... eligible for enrollment if they had experienced an UCA with documented cardiovascular collapse, with ventricular tachycardia (VT) or fibrillation requiring direct current (DC) cardioversion or defibrillation to restore sinus rhythm. Follow-up testing demonstrated normal left ventricular function (le ...
Electrocardiographic criteria of left ventricular hypertrophy in general
... Although newer diagnostic tools are available, the electrocardiogram (ECG) remains the most common mean for evaluating cardiac disease. In particular, several ECG criteria have been proposed for the detection of left ventricular hypertrophy (LVH) both in clinical practice and in epidemiological stud ...
... Although newer diagnostic tools are available, the electrocardiogram (ECG) remains the most common mean for evaluating cardiac disease. In particular, several ECG criteria have been proposed for the detection of left ventricular hypertrophy (LVH) both in clinical practice and in epidemiological stud ...
Quantification of left and right atrial kinetic energy using four
... amount of blood to the systemic and pulmonary circulation. The external work performed by the heart can be divided into kinetic energy (KE) and stroke work. Stroke work constitutes the vast majority (about 99%) of the external work of the left ventricle (LV) at rest (30, 31) and slightly less (94%) ...
... amount of blood to the systemic and pulmonary circulation. The external work performed by the heart can be divided into kinetic energy (KE) and stroke work. Stroke work constitutes the vast majority (about 99%) of the external work of the left ventricle (LV) at rest (30, 31) and slightly less (94%) ...
SCST Diploma in ECG Interpretation: required knowledge and skills
... Knowledge of the ECG criteria for left anterior fascicular block, left posterior fascicular block, incomplete right bundle branch block, complete right bundle block and left bundle branch block. The ability to recognise all categories of atrioventricular block and determine whether block is like ...
... Knowledge of the ECG criteria for left anterior fascicular block, left posterior fascicular block, incomplete right bundle branch block, complete right bundle block and left bundle branch block. The ability to recognise all categories of atrioventricular block and determine whether block is like ...
Case Report: Congenital sub mitral left ventricle aneurysm with
... Africa.SMLVA is basically a congenital out-pouching of the LV wall occurring adjacent to the posterior leaflet of Mitral Valve2. It is typically diagnosed in young adults, presenting mostly with features of Mitral regurgitation, congestive heart failure, systemicembolization, arrhythmia and sometime ...
... Africa.SMLVA is basically a congenital out-pouching of the LV wall occurring adjacent to the posterior leaflet of Mitral Valve2. It is typically diagnosed in young adults, presenting mostly with features of Mitral regurgitation, congestive heart failure, systemicembolization, arrhythmia and sometime ...
response and systolic wall stress in patients with
... bicycle exercise; and the presence of at most mild, nonlimiting symptoms of fatigue and/or exertional dyspnea. Cardiac catheterization, which confirmed the diagnosis of aortic insufficiency, had been performed previously in 23 of the patients. Patients who had other possible causes of cardiomegaly, ...
... bicycle exercise; and the presence of at most mild, nonlimiting symptoms of fatigue and/or exertional dyspnea. Cardiac catheterization, which confirmed the diagnosis of aortic insufficiency, had been performed previously in 23 of the patients. Patients who had other possible causes of cardiomegaly, ...
left ventricular cardiomyopathy in mitral valve prolapse: fact or fiction?
... connective tissue disorder, have an increased incidence of impaired LV function independent of the degree of MR. Additionally, right ventricular dysfunction can occur in MVP. This has been described to occur in 10% of 68 patients with MVP without significant valvular regurgitation.50 In EDS, charact ...
... connective tissue disorder, have an increased incidence of impaired LV function independent of the degree of MR. Additionally, right ventricular dysfunction can occur in MVP. This has been described to occur in 10% of 68 patients with MVP without significant valvular regurgitation.50 In EDS, charact ...
Ventricular tachycardia mapping and ablation in arrhythmogenic
... Although much has been learned about the process of fibrosis underlying ARVC/D, there continues to be significant phenotypic variability for reasons that have not been clearly elucidated. Of note, multiple genes that have been implicated in the disease and this may lead to marked variability of phen ...
... Although much has been learned about the process of fibrosis underlying ARVC/D, there continues to be significant phenotypic variability for reasons that have not been clearly elucidated. Of note, multiple genes that have been implicated in the disease and this may lead to marked variability of phen ...
Cardiac Pacing Site Optimization
... a pacing strategy has not yet been shown to protect or improve LV performance in patients requiring pacing for bradyarrhythmias. In an ongoing clinical trial, dogs with naturally occurring thirddegree or complete heart block in need of pacing therapy are being randomly assigned to three treatment gr ...
... a pacing strategy has not yet been shown to protect or improve LV performance in patients requiring pacing for bradyarrhythmias. In an ongoing clinical trial, dogs with naturally occurring thirddegree or complete heart block in need of pacing therapy are being randomly assigned to three treatment gr ...
Effect of Altered Activation Sequence on Epicardial QRST Area and
... Background. We investigated the effects of activation sequence on cardiac surface QRST areas and refractory periods in experiments on dogs. Meth.ods and Results. Right and left ventricular pacings were performed, and the pacing site was altered every 6 minutes. After 4 minutes of a given pacing, 54 ...
... Background. We investigated the effects of activation sequence on cardiac surface QRST areas and refractory periods in experiments on dogs. Meth.ods and Results. Right and left ventricular pacings were performed, and the pacing site was altered every 6 minutes. After 4 minutes of a given pacing, 54 ...
Molecular and Structural Basis for Cardiac Arrhythmias
... junction protein, Cx43, is expressed in atrial and ventricular muscle and in the distal His –Purkinje system [9– 11]. Cx43 has also been identified in the rabbit and canine sinus nodes [12,13] but not in bovine sinus or atrioventricular nodes [14,15]. Expression of Cx40 in the heart is more restrict ...
... junction protein, Cx43, is expressed in atrial and ventricular muscle and in the distal His –Purkinje system [9– 11]. Cx43 has also been identified in the rabbit and canine sinus nodes [12,13] but not in bovine sinus or atrioventricular nodes [14,15]. Expression of Cx40 in the heart is more restrict ...
cardio i - jan 2015
... Classification by Site of Origin Dysrhythmias Originating in the SA Node Dysrhythmias Originating in the Atria Dysrhythmias Originating Within the AV Junction (AV Blocks) Dysrhythmias Sustained in or Originating in the AV Junction Dysrhythmias Originating in the Ventricles Dysrhythmias ...
... Classification by Site of Origin Dysrhythmias Originating in the SA Node Dysrhythmias Originating in the Atria Dysrhythmias Originating Within the AV Junction (AV Blocks) Dysrhythmias Sustained in or Originating in the AV Junction Dysrhythmias Originating in the Ventricles Dysrhythmias ...
publication
... indexes of LV diastolic function as evidenced by a significant increase in early mitral inflow deceleration time (DT), a decrease of LV end-diastolic pressure, an increase in the ratio between peak mitral flow velocity in early diastole to peak mitral inflow velocity during left atrial contraction ( ...
... indexes of LV diastolic function as evidenced by a significant increase in early mitral inflow deceleration time (DT), a decrease of LV end-diastolic pressure, an increase in the ratio between peak mitral flow velocity in early diastole to peak mitral inflow velocity during left atrial contraction ( ...
Assessment of left ventricular ejection fraction and regional wall
... window [4]. Cardiac MRI has been considered the clinical ‘‘gold standard’’ for LV function assessment, but it is expensive, of limited availability and cannot be performed in patients with implanted pacemakers or defibrillators [5–8]. Multidetector CT (MDCT) of the heart is used largely to evaluate ...
... window [4]. Cardiac MRI has been considered the clinical ‘‘gold standard’’ for LV function assessment, but it is expensive, of limited availability and cannot be performed in patients with implanted pacemakers or defibrillators [5–8]. Multidetector CT (MDCT) of the heart is used largely to evaluate ...
Temporary Pacemakers
... Pacemaker not sensitive enough to patient’s intrinsic electrical activity (mV) Insufficient myocardial voltage Dislodged, loose, fibrotic, or fractured electrode Electrolyte abnormalities Low battery Malfunction of pacemaker or bridging cable ...
... Pacemaker not sensitive enough to patient’s intrinsic electrical activity (mV) Insufficient myocardial voltage Dislodged, loose, fibrotic, or fractured electrode Electrolyte abnormalities Low battery Malfunction of pacemaker or bridging cable ...
Temporary Pacemakers
... Pacemaker not sensitive enough to patient’s intrinsic electrical activity (mV) Insufficient myocardial voltage Dislodged, loose, fibrotic, or fractured electrode Electrolyte abnormalities Low battery Malfunction of pacemaker or bridging cable ...
... Pacemaker not sensitive enough to patient’s intrinsic electrical activity (mV) Insufficient myocardial voltage Dislodged, loose, fibrotic, or fractured electrode Electrolyte abnormalities Low battery Malfunction of pacemaker or bridging cable ...
Implantable Cardioverter Defibrillator
... appropriate ICD discharge ranged from 3.6% to 5.3%. Given the long-term high risk of patients with HCM for SCD risk, with the assumption that appropriate shocks are life-saving, these rates are considered adequate evidence for the use of SCDs in patients with HCM. The evidence is sufficient to deter ...
... appropriate ICD discharge ranged from 3.6% to 5.3%. Given the long-term high risk of patients with HCM for SCD risk, with the assumption that appropriate shocks are life-saving, these rates are considered adequate evidence for the use of SCDs in patients with HCM. The evidence is sufficient to deter ...
Cardiology - Stiftung KinderHerz
... Doppler velocities in different areas within the myocardium, regional myocardial function can be assessed. In patients with normal sinus rhythm, the following waveforms can be seen: the isovolumic contraction (ICT) waveform occurs in early systole; the systolic (S) peak waveform occurs during ventri ...
... Doppler velocities in different areas within the myocardium, regional myocardial function can be assessed. In patients with normal sinus rhythm, the following waveforms can be seen: the isovolumic contraction (ICT) waveform occurs in early systole; the systolic (S) peak waveform occurs during ventri ...
Long-Term Effects of Benidipine Hydrochloride on Severe Left
... including the myocardium. In this regard, TGF-β has been shown to stimulate the transcription of TIMP-1. Increased TGF-β gene expression and activity have recently been found in the left ventricle of the adult spontaneously hypertensive rat16,39−42）. MMPs have differing involvements in the cardiac r ...
... including the myocardium. In this regard, TGF-β has been shown to stimulate the transcription of TIMP-1. Increased TGF-β gene expression and activity have recently been found in the left ventricle of the adult spontaneously hypertensive rat16,39−42）. MMPs have differing involvements in the cardiac r ...
Electric Currents Applied During the Refractory Period Can
... contraction beyond that resulting from the reduction of muscle strength [8]. By initiating the heart beat with a pacemaker connected to an appropriately positioned pacing lead or by simultaneous right and left ventricular activation, the synchrony of contraction can be improved resulting in an enhan ...
... contraction beyond that resulting from the reduction of muscle strength [8]. By initiating the heart beat with a pacemaker connected to an appropriately positioned pacing lead or by simultaneous right and left ventricular activation, the synchrony of contraction can be improved resulting in an enhan ...
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.