Posts Tagged ‘Cardiac’
Unfortunately, anyone can suffer from sudden cardiac arrest. Sudden cardiac arrest is unpredictable and can strike anyone, even teenagers, at any time, anywhere. Although a prior heart disease is a common cause of cardiac arrest, many victims had never experienced heart problems in nature. The risk increases with age.
Without emergency treatment only 5-10 percent of those affected survive sudden cardiac arrest. However, survival rates were achieved over 50 per cent where they have been successfully implemented programs on the use of automated external defibrillator (AED) rates may increase further if we intervene on the patient within three minutes of cardiac arrest.
In most cases of sudden cardiac arrest occurs without prior symptoms. However, the following risk factors increase the potential of sudden cardiac arrest: Read the rest of this entry »
Lymphomas are tumors of the lymphatic system. The lymphatic system defends the body. It consists of cells (lymphocytes) nodes, spleen, tonsils, but is also present in all organs (especially the bone marrow, intestines, glands,).. Lymphoma may develop from one of two major families of lymphocytes: B lymphocytes or T lymphocytes
As with most tumors, the exact cause of lymphoma is unknown. However, we know that people whose immune defenses are weakened (after or during treatment of various diseases) have a higher risk of developing lymphoma. Some viruses can promote development of lymphoma but it is by no means a contagious disease. Read the rest of this entry »
1 – Causes of left heart failure
* Heart failure due to impairment of the heart arteries, the most common cause of left ventricular failure.
Myocardial infarction can be responsible for an acute or chronic heart failure.
Indeed, myocardial infarction causes the death of many cardiac muscle cells that may no longer contract. At a more advanced stage, areas that do not have ownership of contraction of heart muscle grow: this is a fibrosis of the heart muscle. Read the rest of this entry »
Structure and role of the heart
Muscle, the myocardium, ensuring the role of blood pump system. This hollow muscular organ thus allows the circulation of blood in the body and the intake of oxygen and nutrients to all cells of organisms. The heart is located in the middle of the chest (the mediastinum) delimited by the 2 lungs, sternum and spine
Measuring between 14 and 16 cm for a diameter of 12 to 14 cm in adults, the heart represents a volume of 50 to 60 cc. It is slightly larger in men than in women and pump each day on average 8,000 liters of blood through approximately 100 000 beats daily (up to 2 billion beats in life).
The heart has 4 chambers, the atria (or atria) at the top and the ventricles on the bottom. The atria and ventricles are separated from each side by a thick muscular wall, septum. Thus, no exchange of blood between the upper and the lower area is possible. The transition is unidirectional between atrium and ventricle to it through the heart valves. Read the rest of this entry »