A client is receiving oral calcium supplements. Which additional vitamin would the nurse encourage the client to consume to enhance absorption of calcium from the the GI tract?

A. Administration of radioactive iodine: Radioactive iodine (I-131) is a common definitive treatment for hyperthyroidism-it destroys overactive thyroid tissue and reduces hormone production.
B. Administration of levoxyl: Levoxyl (levothyroxine) is thyroid hormone replacement used for hypothyroidism, not for treating hyperthyroidism.
C. Administration of levothyroxine: Same as B -this would increase thyroid hormone and is not appropriate for hyperthyroidism.
D. Administration of IV prednisone: Incorrect as routine therapy. IV glucocorticoids may be used in severe cases (e.g., thyroid storm) to reduce T4→T3 conversion, but they are not the standard primary treatment for chronic hyperthyroidism.

A. Serum potassium level WNL Digoxin given for rapid apical pulse: The serum K⁺ of 3.9 mEq/L is within normal range and the apical rate of 92 bpm is >60, so per usual digoxin administration guidelines the nurse may give the medication and document that K is WNL and digoxin was administered. (If the rhythm is an unexpected irregularity, the nurse would still note it and monitor/notify per facility policy.)
B. Digoxin withheld to prevent toxicity due to the low potassium level: The potassium value is not low (3.9 mEq/L is within normal limits), so withholding for low K⁺ is not indicated.
C. HCP informed of irregular HR and low serum potassium level: While informing the HCP of an irregular pulse may be appropriate, the serum potassium is not low, so documenting “low potassium” would be inaccurate.
D. Digoxin withheld because the client's apical HR is irregular: Irregular rhythm alone (with rate >60 and no other contraindications) is not an automatic reason to withhold digoxin; the usual criterion is to withhold for low heart rate (commonly <60) or other signs of toxicity.