A 14-Month-Old Boy Is Evaluated for Failure to Thrive and Developmental

question 48

Multiple Choice

A 14-month-old boy is evaluated for failure to thrive and developmental delay.  His mother reports that at 12 months he could barely lift his head and had difficulty sitting unsupported.  The toddler has not started babbling or forming words.  He is at the 10th percentile for height and 5th percentile for weight.  Laboratory results are as follows: Urine specimens contain large amounts of orotic acid crystals.  Supplementation with which of the following substances would most likely benefit this patient?

• A)Ascorbic acid
• B)Folic acid
• C)Guanine
• D)Iron
• E)Pyridoxine
• F)Uridine

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Definitions:

Profit-maximizing Level

The point at which a business achieves the highest profit, where marginal cost equals marginal revenue.

Market Demand

The sum of all the quantities of a good or service demanded per period by all the households buying in the market for that good or service.

Total Revenue

The total income a firm receives from selling its goods or services, calculated as the price per unit times the number of units sold.

Total Cost

Total Cost is the sum of all expenses incurred in the production of goods or services, including both fixed and variable costs.