Archive for August, 2010
All people whether suffering from particular diseases or following trauma may suffer from chronic pain, but are senior citizens and people suffering from diseases such as diabetes, arthritis or back problems to suffer. The persistent pain can not be considered a normal part of aging and are thus treated.
Unfortunately it is not always possible to prevent chronic pain but if it is done in a timely manner and focused on the sudden pain, the possibility that they become chronic are considerably reduced. Read the rest of this entry »
Today, press releases relating to mental illness tend to emphasize the fact that a supposed link between violence and mental illness. The reports often suggest that a strong relationship between mental illness and crime. Yet most people who are violent are not mentally ill. In fact, people with mental illness are more likely to be the victim of an act of violence than to commit it.
The media often cite impressive statistics to highlight their case, but we must also consider the whole issue. For example, studies have revealed that the rate of violence (defined as threatening, hitting, fighting or hurting another person in any way) for people with mental illness is 3-5 times higher than among others. By itself, this figure is alarming. However, he compares himself to acts of violence committed by many more men than women. Read the rest of this entry »
The heart, like other organs of the human body to live and function properly it needs the right amounts of oxygen and nutrients . The supply of these substances is ensured by the presence of a dense network of vessels, which together form the coronary system . The coronary circulation, as well as that of the whole body, consists of veins and arteries surrounding the surface of the heart like a crown (hence the term coronary arteries). The arteries , rich arterial blood supply of oxygen and nutrients to the tissues while the sprayed effluent veins carry blood from the heart to the right atrium, where it is sent first to the right ventricle and then to the lungs to be purified. At the level of the heart all the blood vessels is divided into two distinct systems from the outset. The first, called the left coronary system supplies blood mainly to the left side of the heart. The second, called the right coronary system, it occupies the right side instead of spraying. Both of these systems originated from the aortic root, through two major arteries called coronary artery and right respectively cornoaria artery to the left. These vessels then divide into smaller and smaller branches until you reach the inner parts of the heart. Resting oxygen consumption of the heart is high, much higher than other organs and tissues. The myocardium is in fact particularly adept in extracting oxygen from the blood sprays. The heart muscle (myocardium) is in fact striped like other skeletal muscles but has some distinctive differences. Under resting conditions the heart is characterized by: capillary density very large (around 3-4 times higher than in skeletal muscle). Each individual cell in the myocardium is in fact nourished by at least one capillary high blood flow, about 20 times higher than in skeletal muscle (60-80 ml / min. per 100 g of tissue) very high consumption of oxygen (7-9 ml / min. per 100 g of tissue against 0.15 ml / min. per 100 g of skeletal muscle tissue) high oxygen extraction (arterio-venous difference of O 2 10 ml/100 ml/100 ml compared with 5 of skeletal muscle) The heart, than the other muscles of the body , but has a limited ability to derive energy from anaerobic processes. Considering that the oxygen extraction is already high at rest, when energy demands increase the heart not only can increase the blood flow in the coronary system. The myocardium is therefore able to regulate blood flow according to its metabolic needs. In particular, the coronary system can increase up to five times the blood supply to the heart to meet increased energy demands (during maximal exercise blood flow in coronary arteries may reach the value of 1L/min). Read the rest of this entry »