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Classic Procedure: The approach is the same as described earlier for open mitral valvotomy. The excision starts with an anterior incision on the anterior leaflet at 12o'clock position, 2mm distal to the annulus. The incision is extended. The anterior leaflet with the chordae and the tip of the papillary muscle are removed. If the posterior leaflet is calcified, it is also excised along with chordae and tips of papillary muscles. Over zealous excision and suturing may cause venticular rupture or damage to circumflex coronary arteiy. Valve size is assessed according to the type of valve selected by the surgeon. The valve can be sutured by a continuous suture technique or interrupted pledgetted mattress sutures using 2 '0' braided polyester sutures. The pledgets are usually placed on the atrial aspect or rarely on the ventricular aspect.
Biochemical Changes Many workers have tried to follow the biochemical changes that precede flowering and result in meristems which give rise to flowers instead of vegetative s
Define Fish as a rich source of protein? The edible portion is skeletal muscles of the body. Even though the skeletal muscles of different animals are basically similar, fish s
1.How does the skin on your palm differ from that on the back (posterior) of your hand? 2.Describe the differences observed in the type and distribution of hair on the front (anter
Q. Concerning extracellular digestion what is meant by chemical digestion? Chemical digestion is the series of enzymatic reactions to break macromolecules into smaller ones.
Natural selection is such a powerful force in evolution because cells with even a small growth advantage quickly outgrow their competitors. To illustrate this process, consider a b
Proteases of animals From the table you can see that these exopeptidases and endopeptidases attack specific peptide bonds depending on the chemical group near them. The inacti
Q. How does the pancreatic juice resume the digestion of carbohydrates? What is the involved enzyme? Carbohydrate digestion begins with the action of the salivary amylase (ptya
Kingdom Fungi Fungi was earlier placed with the true plants and are still largely considered so in the domain of botanists yet they are quite different. They are multicellular
How might stem cells and other tools of "regenerative medicine" be used to treat brain diseases? Fuelled by the hope which stem cells may have the capacity to rebuild virtually
Classification of Colloidal Systems Thomas Graham referred to colloids as the study of sub microscope dispersion. According to him, it dealt with the dispersed systems of a de
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