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Carpentier -Edwards Valve (C-E) : This is porcine aortic valve preserved in gluteraldehyde and mounted on flexible stent made of cobalt-chromium-nickel alloy (ELGILOY). Gluteraldehyde, a chemical used for tanning of leather causes stability to valve leaflets due to cross linkage of collagen fibres and it reduces antigenicity. It has sewing ring with polytetra fluoro ethylene (PTFEGoretex), incorporating silicon rubber. Valves are available for aortic and mitral position in various sizes. Biological deterioration will occur after 7- 10 years but mechanical failure is uncommon. The rate of biological deterioration 'is faster in children.
Removal of a patient's peripheral intravenous catheter resulted in brief bleeding and the loss of a small amount of blood. Which of the following processes occurred during the form
hpw many neurons do we have?
what process are nematocysts formed by the cnidoblast?
Epidemiological studies The use of available data from the positive epidemiological studies in the risk assessment is encouraged. Data derived fiom human clinical studies, s
Q. Why is there a sense of pressure change inside the ear when someone goes down a mountain? The pressure inside the middle ear is maintained equal to the external ear so to th
general characteristics of cynobacteria
EMBRYONI C MEMBRANES - Such animals are called amniota. Embronic membranes are of 4 types - (i) Yolk sac - It is formed below the embryo. It contains fluid (no yolk
Sound is a main mean of communication and entertainment and is also very effective alarm system for some animal. A loud and unwanted or unpleasant sound causes discomfort and is ca
TECHNIQUE OF ASSESSMENT OF GROWTH AND DEVELOPMENT Measurement of physical growth in children is a key element in evaluation of the health status of children. Physical grow
A haploid cross is made in which the mutant allele has GC at base position 200 in the DNA of a certain gene, and the wild type has AT. What proportion of progeny will have the hybr
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