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Indications for Surgery : The normal mitral valve area is 4-5 cm2. Usually symptoms appear when the valve area has become less than 2.5 cm2. Symptoms are present at rest when the valve area is less than 1.5 cm2. Mitral stenosis is classified as mild, moderate or severe based on: (I) pressure gradient across the valve on echo or cardiac catheterization, (2) calculated valve area.
The ideal operation for mitral stenosis used to be closed mitral valvolomy (CMV). To a large extent this has been replaced by balloon mitral valvotomy (BMV). The indications and suitability of the valve as assessed by echocardiography arc the same for CMV and BMV. The indications for surgery/ invasive procedure have been detailed by American college of cardiology (ACC) and American heart association (AHA) into evidence Class 1, 2A, 2B and 3.
Seed gums Polysaccharides derived from plants and seeds have been in use for thousand of years. Seed gums are a group of polysaccharides with the following properties: S
One of man's oldest methods of preserving foods is drying or desiccation. The preservation of foods by drying is a direct result of removal of moisture. Microorganisms need water
Q. What is Phytates? Phytates are widely distributed in seeds of vegetables, fruits and grains. Unrefined cereals and millets are the richest sources of phytates. Refined or
Q. Explain the use of Benzoates acid? Benzoic acid, sodium benzoate and the parahydroxy esters (parabens) are used as preservatives. Benzoic acid and its sodium salt, sodium be
Halophytes are plants that live in moist soils with high salt concentrations. Despite being surrounded my water, halophytes are often referred to as "salty desert" plants. Explain
What is the fundamental difference between protozoans and algae? The basic difference among protozoans and algae is the fact that protozoans are heterotrophs whereas algae are p
Describe about the extra-ocular muscles The eye is comprised of extra-ocular and intra-ocular muscles. The extra-ocular muscles are comprised of 4 recti and 2 obliques. The rec
Q. Which Of the substances is chromatin made? Chromatin is made of the DNA molecules associated to proteins known as histones.
structural adaptation of mammalian alimentary canal
Theor y of Epigenesis (i) It was proposed by C.F. Wolff & supported by Von Baer. (ii) Wolff proposed that germ cells contain definite but undifferentiated
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