An 18-month old has had vomiting and diarrhea for the past 2 days; the mother brings him to the emergency department because he is becoming more lethargic. What diagnostic test should you order first

Answers 2

The diagnostic test you should order first is a blood test, check hydration and additional tests.

What is a lethargic child?A lethargic child is prostrate and shows no interest in what is going on around him. Often the lethargic child will not look at the mother or watch as you speak. You may have a fixed, expressionless look and not be aware, apparently, of what is going on around you.

With this information, we can conclude that the diagnostic test you should order first is a blood test, check hydration and additional tests.

AI generated Answer

The first diagnostic test that should be ordered is a basic metabolic panel (BMP) in order to assess for hydration status and electrolyte abnormalities. A BMP provides information about sodium, potassium, chloride, carbon dioxide, glucose, blood urea nitrogen (BUN), creatinine, and other electrolytes. This can help to determine if the patient is dehydrated or has any other metabolic imbalances, which could be contributing to the patient's lethargy. Other additional tests may include a complete blood count (CBC) to evaluate for anemia, and a complete urinalysis to assess for infection or urinary tract obstruction. If any of these tests indicate more severe illness, then more advanced tests such as imaging or lumbar puncture may be necessary.
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