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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.
Explain Objectives of Root-End Resection Apicoectomy a) Removal of untreated apical portion of the root, b) Enable the obturator to determine the cause of failure, c) To
A weak acid (HA) has a pKa of 4.691. If a solution of this acid has a pH of 4.920, what percentage of the acid is not ionized? (Assume all H in solution came from the ionization of
Write a DNA palindrome or inverted repeat of at least 10 nucleotides in length.
What is the name of the larva of corals and sea anemones? What is the biological significance of that larval stage? Sexual reproduction in corals and sea anemones has a larval
Explain the Sponge Method? In the sponge method, sterilized sponge with 45 x 5 cm contact surface and free from antimicrobial agent is used. Aseptically, it is moistened with 1
Explain about the Simple Proteins? Simple proteins are those that are made of amino acid units just joined by peptide bond. Upon hydrolysis they yield a mixture of amino acids
difference between axon and cyton
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Q. What is H shaped incision and what is it's purpose? This type of incision is especially useful for: The anterior maxilla or mandible. Accurately identified implant
Why is it important that a cell membrane does not allow all dissolved substances to diffuse freely through it? If the cell membrane were freely permeable, harmful substances co
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