A School-Age Child Has Recurrent Diarrhea with Foul-Smelling Stools, Excessive

question 16

Multiple Choice

A school-age child has recurrent diarrhea with foul-smelling stools, excessive flatus, abdominal distension, and failure-to-thrive. A 2-week lactose-free trial failed to reduce symptoms. What is the next step in diagnosing this condition?

• A) Lactose hydrogen breath test
• B) Serologic testing for celiac disease
• C) Stool for ova and parasites
• D) Sweat chloride test for cystic fibrosis

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Definitions:

Root Cap

A protective structure located at the tip of a plant root, that guards the growing tip as it penetrates the soil.

Root Apical Meristem

The region at the tip of a plant root consisting of undifferentiated cells capable of division and growth, leading to root elongation.

Polysaccharides

Large carbohydrate molecules composed of long chains of monosaccharide units bound together by glycosidic linkages.

Arid Regions

Geographic areas characterized by extremely low levels of precipitation, which makes them dry and often desert-like.