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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.
Apart from any inherited tendency towards coronary heart disease, what are thought to be the four major risk factors? The four major risk factors for coronary heart disease ar
By bombarding atoms in a thin metal sheet with energetic particles, Rutherford found that most of the mass of an atom is concentrated inside a very small volume. What is the diamet
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Define Estimation of Blood Thiamin Levels - Thiamin Status? The levels of free thiamin and its phosphoesters in whole blood and erythrocytes are measured using high- performanc
which was the first harmone discovered#
Biology : Biology may be defined the study of living organisms. It mainly deals with the characteristics of living organisms and their classification. It is also concerned with the
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Determine Water-soluble vitamins needs of school children and adolescents? The suggested requirements are given in Table 15.2 (ICMR 1990). Thiamine is computed as 0.5 mg/1000 K
what is the clear explanation of growth and development
Define Importance of Body composition assessment in athletes? Body composition and weight are two of the many factors that contribute to optimal exercise performance. Body weig
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