The healthcare provider prescribes propylthiouracil (PTU) and Lugol’s solution, a strong iodine solution, for a client with hyperthyroidism. How should the nurse schedule the administration of these medications?
Schedule both medications at bedtime.
Administer iodine one hour before PTU.
Give parental dose once every 24 hours.
Offer both drugs together with a meal.
The Correct Answer is B
A) Schedule both medications at bedtime:
Administering both medications at bedtime may not be the most appropriate schedule. PTU is typically administered multiple times a day to maintain consistent therapeutic levels in the bloodstream. Additionally, administering Lugol’s solution at bedtime may not provide sufficient time for the iodine to take effect before the PTU.
B) Administer iodine one hour before PTU:
This option is correct. Lugol’s solution, a strong iodine solution, is often given before antithyroid medications such as PTU or methimazole to temporarily block thyroid hormone production. Administering iodine about one hour before PTU allows the iodine to be taken up by the thyroid gland, effectively reducing thyroid hormone synthesis before the PTU starts to inhibit the conversion of T4 to T3.
C) Give parental dose once every 24 hours:
This option does not address the timing of administration between PTU and Lugol’s solution. While it may be correct for the dosing frequency of PTU, it does not specify when to administer Lugol’s solution in relation to PTU.
D) Offer both drugs together with a meal:
Administering both drugs together with a meal may not be appropriate, especially considering that Lugol’s solution needs to be absorbed into the bloodstream to exert its effect on the thyroid gland. Administering Lugol’s solution and PTU together may not allow adequate time for the iodine to take effect before the PTU starts to inhibit thyroid hormone production.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A) Sodium level 140 mEq/L (140 mmol/L):
The sodium level within the reference range does not indicate a vitamin D overdose. Sodium levels are typically not affected by vitamin D overdose.
B) Total calcium level 12 mg/dL (3 mmol/L):
This finding suggests a possible vitamin D overdose. Vitamin D plays a crucial role in calcium absorption from the intestines. Excessive vitamin D intake can lead to increased calcium absorption, resulting in hypercalcemia. Elevated calcium levels can lead to various symptoms such as nausea, vomiting, weakness, and confusion. Monitoring calcium levels is essential in individuals with suspected vitamin D overdose.
C) Total bilirubin 4 mg/dL (68.4 μmol/L):
Elevated bilirubin levels typically indicate liver dysfunction or hemolysis. It is not directly related to vitamin D overdose.
D) Serum glucose 170 mg/dL (9.4 mmol/L):
Elevated glucose levels suggest hyperglycemia, which can occur due to various factors such as diabetes mellitus or stress response. It is not directly related to vitamin D overdose.
Correct Answer is B
Explanation
A) Avoid taking the medication on an empty stomach:
While it’s generally recommended to take lithium carbonate with food or milk to minimize gastrointestinal side effects, taking it on an empty stomach does not pose a significant risk. Therefore, it is not the most crucial instruction to emphasize to the client.
B) Maintain a fluid intake of 1,500 to 3,000 mL per day:
This instruction is crucial because lithium can cause dehydration, especially if the client becomes dehydrated due to increased sweating or decreased fluid intake. Adequate fluid intake helps maintain stable lithium levels in the blood and reduces the risk of toxicity. Emphasizing the importance of maintaining hydration is essential for clients taking lithium.
C) Report fluctuations in weight to the healthcare provider:
Weight fluctuations can indicate changes in fluid balance or other metabolic effects of lithium. While it’s important for the client to report changes in weight, this instruction is not as critical as ensuring adequate fluid intake, which directly affects lithium levels and toxicity risk.
D) Keep medication fliers for frequent review and reference:
While it’s helpful for clients to have medication information for reference, this instruction is more about general medication adherence and education rather than a specific requirement related to lithium carbonate.
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