The nursing instructor is discussing the different types of IV fluids with the nursing students. What type of fluid would the instructor tell the students is used to replace circulating blood?
A) Hypertonic solutions
B) Crystalloid solutions
C) Hypotonic solutions
D) Colloid solutions
D
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Colloid solutions are used to replace circulating blood volume because the suspended molecules in the solutions pull fluid from other fluid compartments in the body. Colloids contain blood cells such as RBCs. Crystalloid solutions are made from water and sodium chloride or sugar. Hypotonic solutions contain more dissolved substances compared with plasma. Hypertonic solutions pull fluids into plasma but do not assist with replacement of cells.
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