Cardioversion of acute atrial fibrillation in the emergency department
... In all patients presenting to the emergency department with acute AF, immediate provision of supplementary oxygen, establishment of an intravenous line, continuous electrocardiographic monitoring, blood pressure and 12 lead ECG is mandatory. In the emergency department assessment of AF (Table 8): It ...
... In all patients presenting to the emergency department with acute AF, immediate provision of supplementary oxygen, establishment of an intravenous line, continuous electrocardiographic monitoring, blood pressure and 12 lead ECG is mandatory. In the emergency department assessment of AF (Table 8): It ...
Resting heart rate as a tool for risk stratification in primary
... a laboratory assessment. Subjects additionally completed a self-administered questionnaire, which was used to assess demographic data, smoking history, family history, and information on duration and severity of cardiovascular risk factors and existing medical as well as nonmedical treatment. Physic ...
... a laboratory assessment. Subjects additionally completed a self-administered questionnaire, which was used to assess demographic data, smoking history, family history, and information on duration and severity of cardiovascular risk factors and existing medical as well as nonmedical treatment. Physic ...
Molecular determinants of heart failure with normal left ventricular
... During isolation of cardiomyocytes, endomysial collagen structures are removed; therefore, a high Fpassive in cardiomyocytes of HFNEF patients can only result from increased stiffness of the cardiomyocytes themselves. Because cardiomyocytes were also incubated in solution supplemented with Triton X- ...
... During isolation of cardiomyocytes, endomysial collagen structures are removed; therefore, a high Fpassive in cardiomyocytes of HFNEF patients can only result from increased stiffness of the cardiomyocytes themselves. Because cardiomyocytes were also incubated in solution supplemented with Triton X- ...
Frequency dependent effect of selective biphasic left vagus nerve
... design, as published previously. (14) Although cuffs are not entirely free from problems, their advantage is that the reproducibility of selective stimulations is superior. (23) Namely, the cuff can conform to the shape of the nerve, providing a low stimulation threshold by allowing a large stimulat ...
... design, as published previously. (14) Although cuffs are not entirely free from problems, their advantage is that the reproducibility of selective stimulations is superior. (23) Namely, the cuff can conform to the shape of the nerve, providing a low stimulation threshold by allowing a large stimulat ...
peripheral venous pooling andleft atrial pressure pulse - Heart
... pooling in man have not so far been described. The purpose of this communication is to describe the changes in left atrial pressure that may occur when venous tourniquets are applied to the thighs of patients with mitral valve disease, and to discuss their significance in relation to the diagnostic ...
... pooling in man have not so far been described. The purpose of this communication is to describe the changes in left atrial pressure that may occur when venous tourniquets are applied to the thighs of patients with mitral valve disease, and to discuss their significance in relation to the diagnostic ...
The Electrocardiogram - University of Toronto
... work and the person is having a heart attack. This state of the heart is called fibrillation. Muscle tissues that have a large current passed through them contract in a process called tetanisation, caused be forcing all the cell membranes to simultaneously depolarise. Thus an emergency technique for ...
... work and the person is having a heart attack. This state of the heart is called fibrillation. Muscle tissues that have a large current passed through them contract in a process called tetanisation, caused be forcing all the cell membranes to simultaneously depolarise. Thus an emergency technique for ...
Rate versus rhythm control in atrial fibrillation and
... included. The patients’ mean age had to be greater than 55 years due to the low risk of death or stroke in patients with AF under this age [4,8]. To determine the efficacy of the interventions as primary strategies, the trials had to have intention-to-treat analysis or provide data that allowed this ...
... included. The patients’ mean age had to be greater than 55 years due to the low risk of death or stroke in patients with AF under this age [4,8]. To determine the efficacy of the interventions as primary strategies, the trials had to have intention-to-treat analysis or provide data that allowed this ...
Biventricular Takotsubo Cardiomyopathy
... LV and hyperkinesis of the basal LV extending over more than one coronary artery region.8-11 Since then, this asynergy has been called takotsubo cardiomyopathy (TC), stress cardiomyopathy, ampulla syndrome, broken-heart syndrome, and neurogenic stunned myocardium.12-14 Takotsubo cardiomyopathy prese ...
... LV and hyperkinesis of the basal LV extending over more than one coronary artery region.8-11 Since then, this asynergy has been called takotsubo cardiomyopathy (TC), stress cardiomyopathy, ampulla syndrome, broken-heart syndrome, and neurogenic stunned myocardium.12-14 Takotsubo cardiomyopathy prese ...
File
... pulmonary and systemic circuits • Pulmonary circuit short, low-pressure circulation • Systemic circuit long, high-friction circulation • Anatomy of ventricles reflects differences – Left ventricle walls 3X thicker than right • Pumps with greater pressure © 2013 Pearson Education, Inc. ...
... pulmonary and systemic circuits • Pulmonary circuit short, low-pressure circulation • Systemic circuit long, high-friction circulation • Anatomy of ventricles reflects differences – Left ventricle walls 3X thicker than right • Pumps with greater pressure © 2013 Pearson Education, Inc. ...
EN 1102124
... through the simulation results prove that its performance is usually much better than using conventional methods designed to filter fixed. II. DESCRIPTION OF ECG Just as the electrical activity of the pacemaker is communicated to the cardiac muscle, echoes of the depolarization and repolarization of ...
... through the simulation results prove that its performance is usually much better than using conventional methods designed to filter fixed. II. DESCRIPTION OF ECG Just as the electrical activity of the pacemaker is communicated to the cardiac muscle, echoes of the depolarization and repolarization of ...
Regulation of the Cardiovascular System in Crayfish12 The
... whole animal studies is presented first to anticipate some of the control points which are important in this system. The mechanisms by which adjustments occur will form the main focus of this paper. Most of the data presented here is derived from studies on crayfish, but those derived from other dec ...
... whole animal studies is presented first to anticipate some of the control points which are important in this system. The mechanisms by which adjustments occur will form the main focus of this paper. Most of the data presented here is derived from studies on crayfish, but those derived from other dec ...
QT PROLONGATION and TORSADES DE POINTES: DRUGS and SUDDEN DEATH What is Torsades de Pointes (TdP)?
... the New York Times. These patients had overdosed on quetiapine, had other illnesses, or were taking other medications that can cause electrolyte imbalance or QT prolongation. FDA Aug/11 The antidepressant citalopram (marketed as Celexa) should not be prescribed at doses above 40 mg/day because highe ...
... the New York Times. These patients had overdosed on quetiapine, had other illnesses, or were taking other medications that can cause electrolyte imbalance or QT prolongation. FDA Aug/11 The antidepressant citalopram (marketed as Celexa) should not be prescribed at doses above 40 mg/day because highe ...
Quantitative assessment of left ventricular function with dual
... The functional cardiac parameters are important for therapy planning of congestive heart failure and decision making in patients suffering from coronary heart disease, e.g. before bypass surgery. This functional information is usually derived from other diagnostic procedures than CT, i.e. echocardio ...
... The functional cardiac parameters are important for therapy planning of congestive heart failure and decision making in patients suffering from coronary heart disease, e.g. before bypass surgery. This functional information is usually derived from other diagnostic procedures than CT, i.e. echocardio ...
Effects of mitral valve regurgitation in the dog on the right ventricle
... VHS – vertebral heart scale (Buchanan 2000, Buchanan and Bucheler 1995). General heart size can be measured by relating its dimensions to the length of the thoracic vertebrae (Figure 2). Measurements for the VHS are obtained using the lateral view, although the technique also has been described usin ...
... VHS – vertebral heart scale (Buchanan 2000, Buchanan and Bucheler 1995). General heart size can be measured by relating its dimensions to the length of the thoracic vertebrae (Figure 2). Measurements for the VHS are obtained using the lateral view, although the technique also has been described usin ...
In Patients With Chronic Atrial Fibrillation and Left Ventricular
... Attainment and Maintenance of SR SR was obtained in 17 patients, 6 by amiodarone therapy and 11 by electrical cardioversion. Two of three patients who were resistant to electrical therapy had LVSD of ischemic origin. Early recurrence of AF occurred in four patients. Thus, two groups of 13 cases each ...
... Attainment and Maintenance of SR SR was obtained in 17 patients, 6 by amiodarone therapy and 11 by electrical cardioversion. Two of three patients who were resistant to electrical therapy had LVSD of ischemic origin. Early recurrence of AF occurred in four patients. Thus, two groups of 13 cases each ...
Congenital absence of pericardium revisited
... There is rotation of the heart into the left chest with the right cardiac border projected over the midline. The contour of the left cardiac border is prominent with accentuation of the convexities of the aortic knob, the main pulmonary artery and the left ventricle. The space between the aorta and ...
... There is rotation of the heart into the left chest with the right cardiac border projected over the midline. The contour of the left cardiac border is prominent with accentuation of the convexities of the aortic knob, the main pulmonary artery and the left ventricle. The space between the aorta and ...
The incidence of atrial arrhythmias during inferior wall myocardial
... agreement with that in previous reports.15-I9 This study provides no information about the naturally occurring trigger responsible for the higher propensity toward atria1 rhythm disturbances among patients with RV dysfunction. However, several precipitating factors alone or in combination may be imp ...
... agreement with that in previous reports.15-I9 This study provides no information about the naturally occurring trigger responsible for the higher propensity toward atria1 rhythm disturbances among patients with RV dysfunction. However, several precipitating factors alone or in combination may be imp ...
Cardiac Anatomy for Radiology
... addition, they may insert directly onto the septal wall. This feature is absent in the ? valve of the left ventricle. CARDIAC CHAMBERS: LEFT ATRIUM The left atrium is characterized by one to four entries for the pulmonary veins. The foraman ovale can be seen at the septal wall. It persists a left at ...
... addition, they may insert directly onto the septal wall. This feature is absent in the ? valve of the left ventricle. CARDIAC CHAMBERS: LEFT ATRIUM The left atrium is characterized by one to four entries for the pulmonary veins. The foraman ovale can be seen at the septal wall. It persists a left at ...
In Hospital Outcome of Acute Inferior with Right
... dilatation of RV or new tricuspid regurgitation has also been used as diagnostic criteria for RVMI. However echocardiography is less specific and sensitive than ECG. Nevertheless echocardiographic measurements should be obtained in every inferior MI at the time of admission in order to diagnose RVMI ...
... dilatation of RV or new tricuspid regurgitation has also been used as diagnostic criteria for RVMI. However echocardiography is less specific and sensitive than ECG. Nevertheless echocardiographic measurements should be obtained in every inferior MI at the time of admission in order to diagnose RVMI ...
Visceral pericardium
... The Cardiac Cycle – The contraction pattern of the myocardium • Determined by the conduction system ...
... The Cardiac Cycle – The contraction pattern of the myocardium • Determined by the conduction system ...
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.