Some Donor Centers Have Implemented the Practice of Diverting the First

question 18

Multiple Choice

Some donor centers have implemented the practice of diverting the first few milliliters of blood collected into a pouch attached to the collection bag.The purpose of this procedure is to:

• A)reduce leukocyte contamination.
• B)prepare pedipacks for neonates.
• C)avoid bacterial contamination.
• D)collect blood for viral testing.

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Definitions:

Shape Constancy

The tendency to perceive objects as being the same shape even though the shapes of their images on the retina may differ when the objects are viewed from different positions.

Perceptual Constancy

The tendency to perceive objects as the same even though the sensations produced by them may differ when, for example, they differ in position or distance.

Rectangle

A four-sided polygon with opposite sides being equal and parallel, and all interior angles being right angles.

Fear of Heights

A phobia characterized by an excessive and irrational fear of high places.