Heart diseases(Заболевания сердечно-сосудистой системы)

Diseases of the cardiovascular system. Arrhythmia - a variety of deviation and arrhythmias heartbeat.Normal heart rate in humans of 60-90 beats per minute.Arrhythmias occur in diseases of the central and autonomic nervous systems, endocrine diseases, myocardial injury. Atherosclerosis - is a chronic disease that affects large and medium arteries.In this disease in the inner lining of arteries is delayed cholesterol. Hypertension - is increased tone of arterial vessels.As a result of increased blood pressure, which entails various pathological changes in the organs and systems of the body.Normally blood pressure 120/80. Myocardial infarction - a disease caused by damage to the heart muscle - the myocardium - caused by blockage a coronary artery, which may result from of atherosclerosis. Coronary heart disease (CHD) - a disease that develops when there is insufficient supply of oxygen to the heart muscle by the coronary arteries. The most common reason for this - coronary atherosclerosis. Heart failure - a pathological condition caused by failure of the heart as a pump, to provide adequate circulation. Angina - a form of coronary artery disease, characterized by paroxysmal pain in the heart, due to acute failure of myocardial perfusion.