Free Ventricular Essays and Papers

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

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

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

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

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

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.

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

Ventricular assist device (VAD), in general, may be any device designed to be used as a mechanical pump to aid in the movement of blood in people with weakened and/or diseased hearts. It is used to take blood from the ventricles, the lower chambers of the heart, throughout the body and vital organs. There are two common devices one for the left and the other for the right ventricles. Though the LVAD is used more frequently since it pumps blood to the aorta, the RVAD is often used for a short time

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

cause the QRS which cause ventricular contraction (systole). This phase of the cardiac cycle begins with the appearance of the QRS complex of the ECG, which represents ventricular depolarization. This triggers excitation-contraction coupling, myocyte contraction and a rapid increase in interventricular pressure. Early in this phase, the rate of pressure development becomes maximal. The AV valves to close as interventricular pressure exceed atrial pressure. Ventricular contraction also triggers

Introduction Mild Therapeutic Hypothermia to Improve the Neurologic Outcome After Cardiac Arrest written by Michael Holzer, MD (2002) conducted research to determine if mild systemic hypothermia after resuscitation from cardiac arrest resulting from ventricular fibrillation improves neurologic recovery. Cardiac arrest is known to lead to brain ischemia in a short amount of time; by cooling the body the hope is to preserve the brain on a cellular level. The author cites many preliminary studies with positive

victim's heart rhythm through adhesive electrodes (some AED models require you to press an ANALYZE button). The computer analyzes the heart rhythm and advises the operator whether a shock is needed. AEDs advise a shock only to ventricular fibrillation and fast ventricular tachycardia. The electric current is delivered through the victim's chest wall through adhesive electrode pads. Why are AEDs important? AEDs are important because they strengthen the Chain of Survival. They can restore a normal

Studying for a final. Researching in a lab. Getting my EMT certification. Volunteering. Getting heart disease. I know what you’re thinking. How are these things all related to each other and wanting to go to medical school? Admittedly, it took me some time to figure that out myself. As I started each of the things above I didn’t necessarily begin with the thought that this experience would some how better prepare me for life as a medical student and physician. Even though being a doctor has

adults each year in this hi tech world (Zheng et al 2001). Therapeutic hypothermia (TH) may increase survival and reduce the amount of neurologic damage after cardiac arrest. According to the recent guidelines, comatose survivors of out-of-hospital ventricular fibrillation cardiac arrest should be cooled with internal or external cooling techniques to a target temperature of 32 °C to 34 °C (patients with in-hospital cardiac arrest or other primary rhythms may also be cooled. This target temperature should

Commotio cordis occurs after a blunt, non-penetrating blow to the precordial area of the chest wall that results in the induction of an often fatal ventricular fibrillation in a heart that does not have a preexisting structural or electrophysiological cardiovascular disease (Yabek, 2011). The blow is often perceived to be irrelevant, yet can cause a debilitating injury or even death. Death may be sudden or after a brief period of lucidity with purposeful movement prior to collapse (Yabek, 2011).

The records have been reviewed. The member is an adult male with a birth date of 02/09/1959. He has a diagnosis of ischemic cardiomyopathy. His treating provider, Maria Costanzo, MD, recommended the Zoll LifeVest (wearable cardioverter defibrillator) for the following dates of service 09/02/2015, 10/02/2015, 12/02/2015, 01/02/2016-02/02/2016 (totaling 4 units). The carrier has denied coverage for the Zoll LifeVest as experimental and/or investigational and not medically necessary. A letter from

States can look into is having a defibrillator on site of any athletic activity. A defibrillator can be used when someone undergoes a sudden cardiac arrest. The defibrillator will deliver an electric shock to the heart to try to get it to stop the ventricular fibrillation which is when your heart rate increases and does not produce enough blood to the brian or other organs. A defibrillator was used in the case of Wes Leonard, but unfortunately it was not enough. As of right now I do not believe that

cerebrospinal fluid, a clear, watery fluid that provides cushioning for the brain while also helping to circulate nutrients and remove waste. Basically the lateral verticals nourish our brains . Lateral ventricles are part of the body's ventricular system. The ventricular system acts as a continuation of the central canal of the spinal cord, a similar structure that contains cerebrospinal fluid and runs the length of the neck and trunk. When a form of white brain matter has been damaged near the lateral

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

1) Introduction Intraventricular meningioma is a tumor that derives from the meninges of the brain. This tumor is rare and presents itself in mostly females. They are likely to be seen in patients older than the age of 60. These tumors contain malformed chromosome 22. The cause for this malformation is idiopathic. Breast cancer and radiation can be contributing factors. Symptoms of a meningioma are weakness in limbs, headaches, personality changes and visual problems. (Meningioma 2012: 5-6) This