Angina
Angina pectoris, is only a display case for lack of blood flow (perfusion) to the heart muscle, or in the Latin medical term myocardial ischemia (a term used when a lack of blood supply in any organ in the body). But that does not mean that angina is not important, but rather the contrary, it represents a significant risk factor in the incidence of heart attack in the future, as it often is the first to point out that atherosclerosis may hit the coronary arteries that carry blood to the heart. Doctors angina and is divided into two types:
Stable angina and unstable. Show stable angina when infected by human activity or practice to be Mtardha exciting. The kind unstable ones can occur at rest and relaxation.
Discomfort
Has gripped many people feeling uncomfortable, as is the case when feeling angina, but that it quickly shows something quite different has nothing to do with heart. Many of them are also, of people with angina, do not feel its traditional symptoms such as chest pressure or pain uncomfortable feeling in the chest. In those cases, they feel difficulties in breathing, nausea, fatigue, sweating, and rotation. And feel those symptoms more, women, and men as well as patients with diabetes, and others of the elderly. The first doses no heart in a position away a little to the left of the center of the chest, and is located behind the breastbone. For an adult who enjoys physically fit, the heart beats 70 times per minute and pumped to the outside about 3 ounces (89 milliliters almost) of blood with each beat, which corresponds to more than 2000 gallons (7.57 cubic meters) of blood per day. Permanent source of blood to all its implements this, the heart is the same needs to be a constant source of blood, so it is no coincidence that the blood vessels that feed, any arteries right Altajian and left, Mtafraan of the aorta as it exits the chamber heart Home, which pumps the blood, which is the left ventricle. And despite the fact that the heart gets fresh blood first doses saturated with oxygen, it is not evil, piña flat needs to be about one cup of blood per minute. Blood flow in the coronary arteries in the form of phases, with the flow in the above when the heart is flat and when to take the right and left ventricles in the fullness of blood. Supply and demand for the lack of blood supply to the heart muscle that causes angina, occurs when the heart does not receive the amount of blood that you need to carry out tasks required of it muscle. Sports Valtmarin, anger, or fear, cause the secretion of increasing amounts of hormones «epinephrine» epinephine (formerly called adrenaline), and «Nureebenniferan» norepinephrine. These hormones and pays the heart to pump strongly and speed. In order to be able to adapt to the heart of the speed it needs more oxygen supply energy, sugar, and fat, which contained items nourishing his blood. Normally, this is not a good format: the heart needed more energy, it sends signals, and so expands the arteries so blood flows more .. But things are not as well when exposed to arterial sclerosis, a process in which plaque builds up on the lining Soft walls. Therefore, a smaller amount of blood flowing, and then the heart muscle begins Balastnejad student amounts more than oxygen and other nutrients. In the meantime, the outputs underdeveloped, such as lactic acid, accumulate, because this blood can not dredged. The result is the emergence of angina pectoris, or the equivalent of the symptoms associated with it. However, the problem really begins, when you take these deposits, which carries within cholesterol-rich material, disintegrate and drift with the bloodstream. Then clots composed, and then turn the vessel, which was narrowly to a bowl standstill. The result: the case of angina is more dangerous than type or unstable, it is very likely, occurrence of full symptoms of a heart attack.
Medical conditions
Muscle thick as that medical conditions, except for atherosclerosis atherosclerosi can lead to a lack of blood supply to the heart muscle. When forcing the heart to work strongly and permanently, as a result of high blood pressure or diseases of the heart valves, the heart muscle is getting thicker. This situation two effects. The first is that you need to muscle the largest amounts of more than blood, therefore increasing his request. The second is that the oversized heart may slow the flow of blood through the coronary arteries speed, and, therefore, less blood equipment. The reason here is that it is to increase the thickness of the heart muscle, so that must be the same volume of blood passes through each of the many small blood vessels. This is similar to what happens when you bathe in the bathroom while under Almarcash be one of the family members used tap water in another location. Coronary arteries are also subjected to contractions lead to narrow, even if the process of atherosclerosis did not occur. Increased secretion of the hormone «epinephrine» may lead to the occurrence of such contractions .. Symptoms of gravity, pressure, and age, are the usual descriptions of feeling symptoms of angina. It starts feeling uncomfortable first starts like coming from behind the breastbone. It can also have a stretch to shoulders, neck, jaw, and even teeth. The reason for the spread of radiation that feeling is that the sensory nerves of these areas are related to the same region in the spinal cord that are connected by nerves of the heart. «Stable» and «unstable» Stable angina can characterize as angina «predictable», because of the characteristics that make a certain amount of effort, or the occurrence of a certain level of emotions raging, leading to a Nobtha.
To determine the level of activity
To some people, the stable angina does not mean only a small select only to physical activity, for example, they should not Ehroloa the stairs as they did previously. However, the selections for others, it may affect any type of physical activity that becomes tired. The stable angina may, according to today's times are changing, perhaps due to changes in the function of blood vessels, no easy expansion and constriction of blood normally, the Stable angina is caused by hardening of the arteries that leads to narrow, and the symptoms of stable, because the sediment caused by hardening of the arteries be stable. Individuals can coexist with stable angina for years. And comfort, calm emotions, or nitroglycerin pills, improved Nobadtha usually. The unstable angina, they occur suddenly and without any warning. Sediment caused by hardening of the arteries has suddenly disintegrate, causing a complete blockage of the blood. As one of the coronary arteries that may shrink the blockage occurs. The symptoms are the same symptoms of unstable angina, but it may occur without any effort, as they occur more repetition, and be more severe, so the feeling of heaviness, pressure will be more painful.
Source: Journal of Harverdasahah
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