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In this unit you have learnt that heart failure is one of the most common conditions seen and results in a high mortality. It can result from failure of the heart muscle as with coronary heart disease, hypertension or cardiomyopathy or as the result of mechanical stresses like valvar regurgitation or stenosis. The heart and circulation have many adaptations to cope with heart failure but in the long term these prove inadequate. There are many grades of heart failure and the two main types are systolic and diastolic heart failure. Echocardiography is of immense value in estimating the ejection fraction, chamber volumes and mechanical problems. There are several lines of treatment including the use of diuretics, angiotensin converting enzyme inhibitors and blockers, inotropic agents like digitalis and the cautious use of beta blockers in special situations. Mechanical and electrical devices are also in use. When all else fails one resorts to cardiac transplantation but the number who can have access to such facilities are very few indeed.
Q. Why some trees lose their green color in the autumn? In autumn nights longer and days become shorter thus there is a reduction of the photosynthesis rate and some plants pre
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The vascular tone increases as the arterial size decreases. The tone at any time reflects the effects of excitory and inhibitory pathways. Neurotransmitters, physical forces like s
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Hello, I''m doing an assignment on characteristics and types of fungal enzymes and have also been requested to describe their assay.My libra
Two adaptation of the skin against attack by micro-organisms
What is the main function of chloroplasts? Ans) Chloroplasts are organelles represent in the cytoplasm of plant and algae cells. Similarly mitochondria, chloroplasts have two bo
Define Fats required for underweight - nutritional care? Fats: We know that fats are concentrated source of energy (lg = 9 Kcals). Fats are capable of increasing the energy val
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