Antiarrhythmic Effect of Nifekalant on Atrial Tachyarrhythmia in Four
... and prevention of atrial fibrillation or flutter concomitant with heart failure. We found that intravenous nifekalant changed atrial flutter or multifocal atrial tachycardia with a rapid atrial rate to atrial tachycardia of longer cycle length and caused termination in some cases. Pure K channel blo ...
... and prevention of atrial fibrillation or flutter concomitant with heart failure. We found that intravenous nifekalant changed atrial flutter or multifocal atrial tachycardia with a rapid atrial rate to atrial tachycardia of longer cycle length and caused termination in some cases. Pure K channel blo ...
Anger, ventricular arrhythmias and sudden death
... The population of patients with ICDs provides a unique opportunity to evaluate the effects of mental stress on human arrhythmias. Lampert et al (14) reported that mental stress (anger recall and mental arithmetic) shortens cycle lengths and renders induced ventricular tachycardia more difficult to t ...
... The population of patients with ICDs provides a unique opportunity to evaluate the effects of mental stress on human arrhythmias. Lampert et al (14) reported that mental stress (anger recall and mental arithmetic) shortens cycle lengths and renders induced ventricular tachycardia more difficult to t ...
Why does pulmonary venous pressure rise after onset of LV
... filling is curtailed and LV Ped falls slightly below PVP. The precise nature of each of the curves shown in Fig. 5 is highly dependent on the parameters of the EDPVR, 7 and R,. Extensive analysis, however, failed to identify any combination of these parameter values that could cause an increase in P ...
... filling is curtailed and LV Ped falls slightly below PVP. The precise nature of each of the curves shown in Fig. 5 is highly dependent on the parameters of the EDPVR, 7 and R,. Extensive analysis, however, failed to identify any combination of these parameter values that could cause an increase in P ...
Ventricular interdependence analysis in patients with congenital
... found differences on LV decreases in function, which were found to significantly correlate (r = -0.69, p < 0.001) to functional class.9 Interventricular separation of the septum is relevant for VI development, since its displacement diminishes contralateral area and causes pressure overload.10 It ...
... found differences on LV decreases in function, which were found to significantly correlate (r = -0.69, p < 0.001) to functional class.9 Interventricular separation of the septum is relevant for VI development, since its displacement diminishes contralateral area and causes pressure overload.10 It ...
Dear High School, Sudden Cardiac Arrest
... now being met by the foundation that bears his name. Nationwide, approximately 7,000 youth die of sudden cardiac arrest every year, mostly due to undiagnosed heart conditions. Cardiovascular disease is the second leading medical cause of death in children and adolescents in the United States. In Con ...
... now being met by the foundation that bears his name. Nationwide, approximately 7,000 youth die of sudden cardiac arrest every year, mostly due to undiagnosed heart conditions. Cardiovascular disease is the second leading medical cause of death in children and adolescents in the United States. In Con ...
High concentrations of B−type natriuretic peptide and left ventricular
... frequent with borderline statistical significance (51 vs 35%, p = 0.0564) than in patients with paroxysmal AF. After 1 year follow-up, 15 (9.6%) patients, in whom persistent AF was previously diagnosed (100%), developed permanent AF (permanent AF group). Arrhythmia was well tolerated and pharmacolog ...
... frequent with borderline statistical significance (51 vs 35%, p = 0.0564) than in patients with paroxysmal AF. After 1 year follow-up, 15 (9.6%) patients, in whom persistent AF was previously diagnosed (100%), developed permanent AF (permanent AF group). Arrhythmia was well tolerated and pharmacolog ...
Understanding Heart Failure
... • Reduce shortness of breath Digoxin is commonly used for heart failure patients who have symptoms that persist after taking the above medications. This medication helps to: • Reduce symptoms • Reduce hospitalizations ...
... • Reduce shortness of breath Digoxin is commonly used for heart failure patients who have symptoms that persist after taking the above medications. This medication helps to: • Reduce symptoms • Reduce hospitalizations ...
ID_3558_The basis of internal medicine_English_sem_6
... Ethiotropic therapy of viral infection in acute bronchitis is more effective when it is started: is not effective in 5-7 days from the disease beginning throughout the disease all answers are correct in the first 2 days of illness What reveals auscultation in acute bronchitis with transient bronchia ...
... Ethiotropic therapy of viral infection in acute bronchitis is more effective when it is started: is not effective in 5-7 days from the disease beginning throughout the disease all answers are correct in the first 2 days of illness What reveals auscultation in acute bronchitis with transient bronchia ...
Effect of dual-chamber pacing on systolic and diastolic
... under fluoroscopic guidance. The tight ventricular pacing wire was placed in the right ventricular apex under both fluoroscopic and echocardiographic guidance. Also, if there was not an initial decrease in the left ventricular outflow tract gradient with pacing, the ventricular pacing lead was readj ...
... under fluoroscopic guidance. The tight ventricular pacing wire was placed in the right ventricular apex under both fluoroscopic and echocardiographic guidance. Also, if there was not an initial decrease in the left ventricular outflow tract gradient with pacing, the ventricular pacing lead was readj ...
Sleep-Related Breathing Disorders Are Associated With Ventricular
... to increased intrathoracic pressure changes during OSA. Hypoxemia has been estimated to provoke PVC, as described by Shephard et al10; however, in their study, PVC occurred only in one patient with oxygen desaturations ⬍ 60%, and only patients without cardiac or pulmonary comorbidity were examined. ...
... to increased intrathoracic pressure changes during OSA. Hypoxemia has been estimated to provoke PVC, as described by Shephard et al10; however, in their study, PVC occurred only in one patient with oxygen desaturations ⬍ 60%, and only patients without cardiac or pulmonary comorbidity were examined. ...
Multi-Ethnic Study of Atherosclerosis (MESA) remodelling in a
... status, lipid-lowering and antihypertensive medication use. The results of both models showed the same trends but with diminished magnitude for the fully adjusted model. As there was a significant interaction between gender and physical activity variables; models were stratified by gender instead of ...
... status, lipid-lowering and antihypertensive medication use. The results of both models showed the same trends but with diminished magnitude for the fully adjusted model. As there was a significant interaction between gender and physical activity variables; models were stratified by gender instead of ...
relation of hemoglobin a to left ventricular diastolic function in
... position by 2-dimensional transthoracic standard pulsed color Doppler echocardiography using a VING MED 750C echocardiographic machine. Recordings were acquired with a 1.7 to 3.5 harmonic Doppler transducer. Color-Doppler, M-mode and 2-dimensional echocardiographic images of the left ventricle were ...
... position by 2-dimensional transthoracic standard pulsed color Doppler echocardiography using a VING MED 750C echocardiographic machine. Recordings were acquired with a 1.7 to 3.5 harmonic Doppler transducer. Color-Doppler, M-mode and 2-dimensional echocardiographic images of the left ventricle were ...
Irbesartan in Patients with Heart Failure and Preserved
... a diagnosis of heart failure have a normal or near-normal left ventricular ejection fraction.1-5 Such patients differ from those with heart failure and a low left ventricular ejection fraction in a number of important ways: they tend to be older and female, and their condition is more likely to be a ...
... a diagnosis of heart failure have a normal or near-normal left ventricular ejection fraction.1-5 Such patients differ from those with heart failure and a low left ventricular ejection fraction in a number of important ways: they tend to be older and female, and their condition is more likely to be a ...
11 - Coach Eikrem's Website
... Regulation of the Heart • external control – cardiac center • located in the medulla oblongata • consists of sympathetic and parasympathetic branches – sympathetic stimulation » increases the heart rate » affected by emotions and physical activity – parasympathetic stimulation » decreases the heart ...
... Regulation of the Heart • external control – cardiac center • located in the medulla oblongata • consists of sympathetic and parasympathetic branches – sympathetic stimulation » increases the heart rate » affected by emotions and physical activity – parasympathetic stimulation » decreases the heart ...
Total Body Surface Potential Mapping During Exercise
... making such interpretations of the ECG because spatial distributions of potentials over the entire torso at sequential instants of time in each cardiac cycle can be examined. Body surface mapping lead systems sometimes use as many as 100 to 200 electrodes. The practical problems involved in recordin ...
... making such interpretations of the ECG because spatial distributions of potentials over the entire torso at sequential instants of time in each cardiac cycle can be examined. Body surface mapping lead systems sometimes use as many as 100 to 200 electrodes. The practical problems involved in recordin ...
Cardiac magnetic resonance imaging of systemic amyloidosis
... death in approximately 50% of patients with AL amyloidosis.8-10 Assessment of cardiac function is important in the diagnostic work-up, therapeutic follow-up and prognosis of AL amyloidosis, as well as in the clinical management of these patients. Currently, myocardial biopsy is regarded as the gol ...
... death in approximately 50% of patients with AL amyloidosis.8-10 Assessment of cardiac function is important in the diagnostic work-up, therapeutic follow-up and prognosis of AL amyloidosis, as well as in the clinical management of these patients. Currently, myocardial biopsy is regarded as the gol ...
Chambers, valves, conduction system and coronary circulation
... from surrounding myocardium, but not insulated. Origin of electrical impulse Conduction of impulse from SAN does not run in CONDUCTION TRACTS, but the orientation of the normal myocardial fibres within the right atrium directs the impulse towards the atrioventricular node The atrioventricular node w ...
... from surrounding myocardium, but not insulated. Origin of electrical impulse Conduction of impulse from SAN does not run in CONDUCTION TRACTS, but the orientation of the normal myocardial fibres within the right atrium directs the impulse towards the atrioventricular node The atrioventricular node w ...
Am J Cardiol. 105
... The exercise was terminated at the subjects’ request, because of electrocardiographic changes associated with myocardial ischemia, physical exhaustion, dyspnea, or calf/thigh pain. To prevent decreases in systolic blood pressure from venous pooling after test termination, the subjects were instructe ...
... The exercise was terminated at the subjects’ request, because of electrocardiographic changes associated with myocardial ischemia, physical exhaustion, dyspnea, or calf/thigh pain. To prevent decreases in systolic blood pressure from venous pooling after test termination, the subjects were instructe ...
Metabolic Cardiology
... ongestive heart failure (CHF) is accompanied by systolic and/or diastolic dysfunction. Most clinicians usually have no difficulty understanding and diagnosing systolic dysfunction; abnormalities can be easily detected by a careful physical examination and chest x-ray. However, diastolic dysfunction i ...
... ongestive heart failure (CHF) is accompanied by systolic and/or diastolic dysfunction. Most clinicians usually have no difficulty understanding and diagnosing systolic dysfunction; abnormalities can be easily detected by a careful physical examination and chest x-ray. However, diastolic dysfunction i ...
Patient information sheet – Ablation of atrial fibrillation (pulmonary
... In over 95% patients, abnormal electrical “triggers” within pulmonary veins are responsible for initiating AF. These veins connect to the left atrium (the left, top chamber of the heart) and drain blood rich in oxygen from the lungs. Over the past decades, we have learned that if these veins could b ...
... In over 95% patients, abnormal electrical “triggers” within pulmonary veins are responsible for initiating AF. These veins connect to the left atrium (the left, top chamber of the heart) and drain blood rich in oxygen from the lungs. Over the past decades, we have learned that if these veins could b ...
Common RyR2 variants associate with ventricular arrhythmias and
... interventricular septum, right and left ventricular function, wall motion abnormalities and morphological abnormalities. When possible, these evaluations included cardiac magnetic resonance imaging, especially in patients with dilated cardiomyopathy. At baseline, a 12-lead ECG and 24-h Holter record ...
... interventricular septum, right and left ventricular function, wall motion abnormalities and morphological abnormalities. When possible, these evaluations included cardiac magnetic resonance imaging, especially in patients with dilated cardiomyopathy. At baseline, a 12-lead ECG and 24-h Holter record ...
The Age-Associated Alterations in Late Diastolic Function in Mice
... Caloric restriction reduces the magnitude of many age-related changes in rodents. Cardiac function is altered with senescence in mice, rats, and healthy humans. We examined the effects of life-long caloric restriction on diastolic and systolic cardiac function in situ using Doppler techniques in ad ...
... Caloric restriction reduces the magnitude of many age-related changes in rodents. Cardiac function is altered with senescence in mice, rats, and healthy humans. We examined the effects of life-long caloric restriction on diastolic and systolic cardiac function in situ using Doppler techniques in ad ...
here
... and 4 so it would lie within the LV. The catheter was placed with its distal tip in the LV apex, and proximal electrode just beyond the aortic valve. A high-frequency (⬃20 kHz), lowamplitude (⬃10 A) alternating current was injected between the most proximal and distal electrodes, generating a curre ...
... and 4 so it would lie within the LV. The catheter was placed with its distal tip in the LV apex, and proximal electrode just beyond the aortic valve. A high-frequency (⬃20 kHz), lowamplitude (⬃10 A) alternating current was injected between the most proximal and distal electrodes, generating a curre ...
MEASURING THE PHYSIOLOGY OF EMOTION AND EMOTION
... approach its measurement. In a chapter published in 1984, titled “Expression and the Nature of Emotion” (Ekman, Sorenson, & Friesen, 1984), he outlined 10 characteristics of emotion. Among these are the suggestions that there are limits on the duration of an emotion, the timing of an emotion express ...
... approach its measurement. In a chapter published in 1984, titled “Expression and the Nature of Emotion” (Ekman, Sorenson, & Friesen, 1984), he outlined 10 characteristics of emotion. Among these are the suggestions that there are limits on the duration of an emotion, the timing of an emotion express ...
Electrocardiography
Electrocardiography (ECG or EKG*) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on a patient's body. These electrodes detect the tiny electrical changes on the skin that arise from the heart muscle depolarizing during each heartbeat.In a conventional 12 lead ECG, ten electrodes are placed on the patient's limbs and on the surface of the chest. The overall magnitude of the heart's electrical potential is then measured from twelve different angles (""leads"") and is recorded over a period of time (usually 10 seconds). In this way, the overall magnitude and direction of the heart's electrical depolarization is captured at each moment throughout the cardiac cycle. The graph of voltage versus time produced by this noninvasive medical procedure is referred to as an electrocardiogram (abbreviated ECG or EKG).During each heartbeat, a healthy heart will have an orderly progression of depolarization that starts with pacemaker cells in the sinoatrial node, spreads out through the atrium, passes through the atrioventricular node down into the bundle of His and into the Purkinje fibers spreading down and to the left throughout the ventricles. This orderly pattern of depolarization gives rise to the characteristic ECG tracing. To the trained clinician, an ECG conveys a large amount of information about the structure of the heart and the function of its electrical conduction system. Among other things, an ECG can be used to measure the rate and rhythm of heartbeats, the size and position of the heart chambers, the presence of any damage to the heart's muscle cells or conduction system, the effects of cardiac drugs, and the function of implanted pacemakers.