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Congenital Heart Defects
Congenital Heart Defects

... Congenital heart defects are abnormalities in ...
MYOCARDIAL PERFORMANCE
MYOCARDIAL PERFORMANCE

... the stroke volume response to increased afterload will be limited by ventricular filling despite normal contractile properties. A relevant clinical example of afterload-preload mismatch is the use of dynamic indices such as stroke volume variability or pulse pressure variability to predict the cardi ...
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... The follow-up echocardiogram revealed her EF improved slightly to 25%. Considering the improvement, the patient’s carvedilol dose was increased to 6.25 mg bid and she was prescribed to continue wearing the WCD. The next appointment was set for three months, where her EF would be assessed for further ...
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Additional Notes on The Heart
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Course ID Number - Coahoma Community College
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Mammal Heart Dissect
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Research Template - UMKC School of Medicine
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RAJIV GANDHI UNIVERSITY OF HEALTH SCIENCES
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... All the preparations were evaluated for their cardi-otonic activity by using isolated frog heart assembly. The rate and force of heart contraction was deter-mined. Preparation of digoxin solution Digoxin ampoules (Sun Pharma Ltd.) were purchased from local pharmacy. Various different dilutions were ...
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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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