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    Ventricular Assist Devices The Jarvik 2000 is a vast improvement in artificial hearts since its predecessor the Jarvik-7. The Jarvik 2000 is a ventricular assist device. Ventricular Assist Devices (VAD) are a less invasive alternative to an artificial heart transplant. They are intended to assist the heart in pumping blood, not to replace the heart. These devices are implanted into the body and pump blood through the aorta thus, relieving the weakened ventricle of its normal workload. It

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    Ventricular Tachycardia

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    Objectives The objectives of this case study are to evaluate the cause of death for a female patient that presented to the ER with ventricular tachycardia, of which elevated to ventricular fibrillation and was unsuccessfully resuscitated. Furthermore, what genetic presupposition to development of VT did she have, and how was this augmented by the influence of Seldane ® (active ingredient terfenadine), an over the counter anti-histamine allergy season remedy. Clinical History During spring time

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    Inhibitory or Excitatory Potential Changes

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    risperidone decreases outward current but has no effect on inward current. It lengthens the repolarization of atrial and ventricular action potentials only at high drug levels. Risperidone reduces the membrane resting potential and prolongs action potential duration. In human heart preparations risperidone, at high drug concentrations, lengthens repolarization of atrial and ventricular myocardium. (Gluais et al, 2004).Risperidone lengthens the QT action potential of rabbit heart. It lengthens the

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    Ventricular Tachycardia

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    Ventricular Tachycardia An dysrhythmia of the heart is an irregular heartbeat rhythm. Ventricular tachycardia is an dysrhythmia in which the lower chambers of the heart, the ventricles, beat unusually fast. The heart rate is measured with an electrocardiogram, or ECG. This is a machine that measures the electrical impulses from the patient's heart. This is displayed on a monitor or ECG graph paper. The boxes on the graph paper measure time. Five small boxes are equal to one large box.

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    The pulmonary vein is the only artery in our body which consists of oxygenated blood. This is when the heart beat contraction takes place, the mitrial valves open; this then lets blood flow through into the left ventricles. This is where the ventricular systole contraction takes place. After the oxygen is used, a gas called carbon dioxide is produced; the veins carry blood through to the heart. To get to the heart it flows through the vena cava this then goes through to the right atrium, this

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    flowing through the heart disrupts the normal coordination of heart muscles. These muscles lose their vital rhythm and begin a process known as ventricular fibrillation. Death soon follows. 0.25 Amps/250mA is equal to the current flowing through a 60W Bulb. What is ventricular fibrillation? The heart beats when electrical signals move through it. Ventricular fibrillation is a condition in which the heart's electrical activity becomes disordered. When this happens, the heart's lower (pumping) chambers

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    Dyslexia

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    they are about eight or nine. The most important thing to remember is that is takes time to solve, and sometimes cannot be cured at all. Dyslexia develops during the first six months of gestation . Neurons are churned out in the brain's ventricular zone. Attached to fibers, the neurons travel to the cerebral cortex, which contains the language centers. Here they hit a barrier, stop and take their place in layers above previously deposited neurons, (which is normal). In the brains of

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    formation continues in the dentate gyrus of the hippocampus (2). The hippocampus, which lies beneath the cortex is a major factor of learning and memory formation and can indirectly influence emotion. Progenitor cells which are present in the sub ventricular zone of the hippocampus are responsible for such growth as they produce daughter neuron cells through division (2). In the 1960s, Joseph Altman from MIT reported that new neurons were being produced in the dentate gyrus of the hippocampus of

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    Origins leading to ventricular septal defect pathology are limited to what is currently known about normal mechanisms of cardiac ventricular septation: the transformation of the single common ventricular peristaltic pump, into a two ventricle system, complete with one-way valves, that exhibit synchronous contraction (Penny & Vick, 2011, p. 1103). DEVELOPMENT The septum consists of both superior membranous and inferior muscular components (Contreras-Ramos et al., 2008). Early in embryonic cardiac

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    Left Ventricular Systolic Dysfunction

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    Left Ventricular Systolic Dysfunction (LVSD, but commonly referred to as heart failure) is a chronic, progressive cardiac syndrome in which a damaged heart fails to beat efficiently and deliver enough blood to meet the body's needs. Although coronary heart disease (CHD) is the most common cause, for example, myocardial infarction, and many of the conditions are intertwined, there are several other causes of heart failure including cardiomyopathies, hypertension and valve disease. Cardiomyopathies

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