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) Diminished renal output:
Diminished renal output could be a potential concern with cefoxitin administration, as it is primarily excreted by the kidneys. However, it is not specifically related to the client’s allergy to penicillin. While it warrants monitoring, it is not the most critical finding to report in this context.
B) Pruritis and macular rash:
The development of pruritis (itchiness) and a macular rash (flat, discolored skin lesions) following the administration of cefoxitin in a client with a documented allergy to penicillin is a significant finding. It suggests a possible allergic reaction to cefoxitin, which belongs to the cephalosporin class of antibiotics. Cross-reactivity between penicillin and cephalosporins is well-documented, with some cephalosporins having a higher risk of allergic reactions in individuals with penicillin allergy. Therefore, pruritis and rash in this context may indicate an allergic response, and it is crucial to report this finding promptly to the healthcare provider for further evaluation and management.
C) Vomiting and diarrhea:
While gastrointestinal symptoms such as vomiting and diarrhea can occur as adverse effects of cefoxitin, they are not specific to an allergic reaction and may occur with various medications. While it is essential to monitor for these symptoms, they are not the most important findings to report in the context of a known penicillin allergy.
D) Vaginal discharge:
Vaginal discharge is not typically associated with an allergic reaction to cefoxitin. While changes in vaginal discharge may be clinically relevant in certain contexts, such as indicating a possible yeast infection or bacterial vaginosis, it is not directly related to the client’s allergy to penicillin or the administration of cefoxitin.
Correct Answer is B
Explanation
A) Platelets:
Platelet levels are not directly affected by antidiuretic hormone (ADH) administration or diabetes insipidus. Platelet monitoring is important in assessing clotting function but is not specifically related to the management of diabetes insipidus or ADH therapy.
B) Osmolality:
This is the correct answer. Osmolality refers to the concentration of solutes in the blood and is a critical parameter to monitor in clients receiving ADH therapy for diabetes insipidus. ADH regulates water reabsorption in the kidneys, thereby affecting blood osmolality. Monitoring serum osmolality helps assess the effectiveness of ADH therapy in maintaining fluid balance and preventing excessive urine output.
C) Glucose:
While glucose monitoring is important in clients with diabetes mellitus, it is not directly related to diabetes insipidus or ADH therapy. Diabetes insipidus is characterized by excessive thirst and urination due to inadequate ADH production or response, which does not involve glucose metabolism.
D) Calcium:
Calcium levels are not typically affected by ADH therapy or diabetes insipidus. Monitoring calcium levels is important in conditions such as hyperparathyroidism or hypoparathyroidism but is not directly relevant to the management of diabetes insipidus.
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