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Ventricular Fibrillation Detection Algorithm Implemented in a Cell
Ventricular Fibrillation Detection Algorithm Implemented in a Cell

... In the first step of the algorithm the ECG signal goes through a band-pass filter to attenuate the P and T low frequency components of the ECG, remove baseline slow changes or drifts and reduce 50/60 Hz line interference and electromyographic high frequency noise. After filtering, the signal is diff ...
The Heart
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... The SA node is the natural pacemaker of the heart. You may have heard of permanent pacemakers (PPMs) and temporary pacing wires (TPWs) which are used when the SA node has ceased to function properly. The SA node releases electrical stimuli at a regular rate, the rate is dictated by the needs of the ...
Drugs treating congestive heart failure
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... The irregular ventricular contractions cause the systolic arterial pressure to vary from beat to beat as ventricular filling time changes. The pulse pressure also may vary from beat to beat because the diastolic runoff time varies from beat to beat. Atrial fibrillation often involves microreentry. A ...
ECG, ANN, PhysioData Net, Classification, MIT-BIH.
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... Xu et al. in [11] proposed that Slope Vector Waveform (SVM) algorithm helps to find out the RR interval and QRS complex of ECG wave. In this method for determination of better signal to noise ratio, nonlinear amplification and also used differentiator to detect the desired slope vectors for features ...
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... ventricular dilation. As the annulus pulls apart, the mitral valve leaflets can no longer coaptate and create a tight seal when the heart contracts. This allows blood to leak across the valve. So, mitral regurgiation occurs in advanced dilated cardiomyopathy. This is in direct opposition to the mitr ...
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PowerPoint プレゼンテーション

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Full Article - College of Intensive Care Medicine

... Calcium channel blockers and nitrates are the mainstay of treatment for PA. Their role in preventing vasospasm is well established. However, two small studies of the role of calcium channel blockers in PA10,13 revealed contradictory findings with regard to prevention of ventricular tachyrhythmias. S ...
Low Body Negative Pressure and Cardiac MRI
Low Body Negative Pressure and Cardiac MRI

... presentedbelow in figure 3. Behaviour during the early filling phase of diastole is shown in 50 ms epochs. Other myocardial regions were found to exhibit similar behaviour. Base ...
2008 Fellowship Report: Jessica Clark
2008 Fellowship Report: Jessica Clark

... Activity #1: What is a scientist? (15 minutes) Since many children and teachers visualize scientists as middle-aged white males with wild hair, glasses and a lab coat, holding test tubes and working inside a laboratory, this activity was done to break these common stereotypic perceptions. I wanted t ...
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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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