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The primary health-care provider prescribes a cough syrup 0.4 g every 4 hours. The dosage strength of the syrup is 100 mg/5 mL. The medication bottle contains a measuring spoon that measures in teaspoons and tablespoons. How many teaspoons will the nurse instruct the client to take?
Answer and Explanation

The Correct Answer is ["4"]

Step 1: Convert the Prescribed Dose to Milligrams

 

The prescribed dose is 0.4 grams (g), but the medication strength is in milligrams (mg). We need to use the same unit for both.

  • There are 1000 mg in 1 g.

  • To convert 0.4 g to mg, we multiply by 1000.

  • 0.4×1000=400

  • The prescribed dose is 400 mg.

 

Step 2: Calculate the Volume (in mL) Needed for the Dose

 

We know that 5 mL of the syrup contains 100 mg of medication. We need to find out how many mL are needed for 400 mg.

  • To find out how many groups of 100 mg are in 400 mg, we divide:

  • 400÷100=4

  • This means we need 4 times the volume of syrup that contains 100 mg.

  • The volume for 100 mg is 5 mL. So, we multiply 4 by 5 mL.

  • 4×5 mL=20 mL

  • The total volume needed per dose is 20 mL.

 

Step 3: Convert the Volume to Teaspoons

 

The measuring spoon is in teaspoons (tsp). We need to convert 20 mL to teaspoons.

  • There are 5 mL in 1 teaspoon.

  • To find out how many teaspoons are in 20 mL, we divide 20 by 5.

  • 20÷5=4

  • The dose is 4 teaspoons.

The nurse will instruct the client to take 4 teaspoons.

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Related Questions

Correct Answer is A

Explanation

1 AM while sleeping: NPH insulin, like Humulin N, typically reaches its peak effectiveness about 4-12 hours after administration. Since the client takes it at 5 PM, the time of greatest risk for hypoglycemia is around 1 AM when the insulin's effects are at their peak. This is a critical period for monitoring blood glucose levels.

B. 8 PM shortly after dinner: By 8 PM, the NPH insulin's effectiveness is not at its peak. It's been about 3 hours since administration, and the insulin is still working to lower blood glucose levels. This time frame is not associated with the highest risk of hypoglycemia.

C. 6 PM shortly after dinner: At 6 PM, it's been only about an hour since the client took the NPH insulin. The insulin is just beginning to take effect, and the risk of hypoglycemia is not as high as it would be later in the night.

D. 11:00 AM, shortly before lunch: By 11:00 AM, the effects of the NPH insulin from the previous evening have largely worn off. This time frame is not associated with a high risk of hypoglycemia related to the evening dose of NPH insulin.

Correct Answer is C

Explanation

A. Photophobia is not typically associated with hypothyroidism. It can be a symptom of conditions affecting the eyes, such as certain infections or ocular disorders.

B. Exophthalmos is a protrusion of the eyeballs and is a characteristic symptom of hyperthyroidism (overactive thyroid), not hypothyroidism (underactive thyroid).

C. Correct. Lethargy is a common symptom of hypothyroidism. It is characterized by extreme tiredness, sluggishness, and lack of energy.

D. Goiter is an enlargement of the thyroid gland and can occur in both hyperthyroidism and hypothyroidism. However, it is not a direct symptom; it is a physical finding that can be associated with thyroid disorders.

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