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Describe Pressure Controlled Ventilation (PCV)
This is a pressure cycled mode (machine delivers a set pressure - the tidal volume generated depends on how compliant the lungs are) that is completely controlled by the ventilator. Because of a characteristic decelerating flow pattern, it results in lower peak pressures and longer inspiratory times. PCV is useful in situations where the lungs are stiff - it might reduce the incidence of barotraumas. It might also result in better gas exchange when used with high inspiratory times. The disadvantage of PCV is that tidal volumes are not guaranteed and depends on how stiff the lungs are.
Diffusion is the spreading of substance molecules from a region where the substance is more concentrated to other region where it is less concentrated. For example, during the boil
Who is the founder of theory survival of the fittest ?
DISORDERS OF LIVER: In the foregoing sections and sub-sections we have discussed about the common disorders of upper and lower gastrointestinal tract. Now we shall discuss
Composition of blood: Take few ml. of fresh blood in a test tube and before collecting the blood add a few drops of sodium oxalate or sodium citrate solution to prevent clot
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Seed Coat Effects In some seeds dormancy is imposed by the presence of the seed coat; if this is removed, the seed germinates. Two possible types of mechanisms could be invol
excretory organs in spiders?
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