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How to do: Telerehabilitation in heart failure patients
How to do: Telerehabilitation in heart failure patients

... TR set is used to monitor and control training in anywhere the patient has elected to exercise. If the training session is completed uneventfully, the patient transmits ECG recording via a mobile phone to the monitoring centre immediately after the end of every training session. The data are stored ...
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Transient Trifascicular Block in Severe Hyperkalemia
Transient Trifascicular Block in Severe Hyperkalemia

... II second-degree AV block. We report a case of trifascicular block, due to hyperkalemia. The patient’s symptoms and electrocardiogram (ECG) evidence of trifascicular block resolved with lowering of serum potassium levels, with subsequent ECG showing left anterior hemiblock. This paper highlights an ...
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Ignatavicius: Medical-Surgical Nursing, 7th Edition
Ignatavicius: Medical-Surgical Nursing, 7th Edition

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Cardiac Arrhythmias: The Quest for a Cure

... period shortens and looses its rate-related behavior. This occurred in a non-uniform way, increasing disparity in refractory period duration. Also, conduction velocity in the ...
5.9.2006 Dear Mrs Selz, I hereby include a summary taken from my
5.9.2006 Dear Mrs Selz, I hereby include a summary taken from my

... however, when En(tn) is compared quantitatively between the two groups, statistical significance is found at the ejection phase and during diastole. These differences need to be taken into account when assessing cardiac contractility based on a generalized En(tn) in different animal models or in the ...
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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.
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