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Q. Pathophysiology of mitral stenosis?
Normally there is no pressure gradient between left atrium and the left ventricle during diastole. However, as the valve orifice size decreases pressure gradient develops across mitral valve in diastole and the mean left atrial pressure increases. Increase in left atrial pressure would cause increase in the pulmonary artery wedge pressure. Increase in pulmonary artery wedge pressure would cause interstitial congestion by way of Starling's forces and this presents as symptoms of dyspnoea. Further rise in pulmonary artery wedge pressure causes pulmonary edema and pulmonary arterial hypertension. In some patients there will be disproportionate rise in pulmonary artery pressure due to vasoreactivity of pulmonary arteries. As the pulmonary artery systolic pressure increases further the right ventricle fails and features of right heart failure would ensue.
Tricuspid Excision : For tricuspid valve endocarditis with vegetations in drug users, valve excision is done by removing three cusps and chordae and papillary muscles. Later
Explain Intensity of heart sound? Intensity of S 1, particularly M 1 depends on the position of the bellies of mitral leafets when the LV begins to contract since S 1 is loudes
Q. What are the major theoretical models that try to explain the formation of the enzyme-substrate complex? There are two major models that explain the formation of the enzyme-
characteristics of class mamalias
Q. Important conditions for malabsorption syndrome? Let us now discuss a few important conditions grouped collectively under the term of malabsorption syndrome. These are:
How many cells are in the human body? According to "The Handy Science Answer Book" noted by the Science and Technology Department of the Carnegie Library of Pittsburgh (1994) th
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Explain the Primary Stain - Ziehl-Neelsen Method? Ordinary aqueous stains like methylene blue, crystal violet, etc. are not able to stain most of the species of Mycobacteria. C
Myocardial Protection : To a great extent, the result of cardiac surgery depends on how well the myocardium is protected during cardio pulmonary bypass. Temporary depression of m
Preformatio n Theory (1632-1723) (i) Scientist 'Malpighi Swammerdam' propounded the preformation theory. This theory holds that the sex cells (sperm and ova) had the m
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