Nurses Should Be Aware of the Strengths and Limitations of Various

question 9

Multiple Choice

Nurses should be aware of the strengths and limitations of various biochemical assessments during pregnancy,including that

• A) Chorionic villus sampling (CVS) is becoming more popular because it provides early diagnosis.
• B) Screening for maternal serum alpha-fetoprotein (MSAFP) levels is recommended between 10 and 12 weeks of gestation in order to give parents time to consider options.
• C) Percutaneous umbilical blood sampling (PUBS) is one of the multiple marker screen tests for Down syndrome.
• D) MSAFP is a screening tool only; it identifies candidates for more definitive procedures.

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Definitions:

Aa Lava

A type of lava flow with a rough, jagged surface, characterized by its slow movement and thick, viscous nature.

Vesicles

Small holes found in a volcanic rock, representing gas bubbles in a magma that were trapped when the lava solidified.

Welded Tuff

A type of rock formed by the compaction and cementation of volcanic ash and debris, heated enough post-deposition to weld together.

Scoria

A dark gray, black, or reddish volcanic rock that contains abundant vesicles, usually having the composition of basalt or andesite; synonymous with volcanic cinders.