During the administration of finasteride, the nurse must remember which important precaution?

Choice A reason: This is incorrect because withholding all medications may cause hyperglycemia or ketoacidosis in the patient, especially if they are taking insulin or sulfonylureas. The nurse should consult with the prescriber to adjust the dose or timing of the medications according to the patient's blood glucose level and the duration of the procedure.

Choice B reason: This is correct because contacting the prescriber to clarify orders is the best action by the nurse, as the prescriber can provide specific instructions on how to manage the patient's oral antidiabetic drugs before and after the oral endoscopy. The nurse should also monitor the patient's blood glucose level closely and report any abnormal findings to the prescriber.

Choice C reason: This is incorrect because administering half the original dose may not be appropriate for the patient, as it may cause hypoglycemia or hyperglycemia depending on the type and dose of the medication and the patient's blood glucose level. The nurse should not make any changes to the medication regimen without the prescriber's approval.

Choice D reason: This is incorrect because giving the medication with a sip of water may violate the NPO status of the patient, which is necessary to prevent aspiration or interference with the oral endoscopy. The nurse should not administer any oral medications or fluids to the patient unless the prescriber allows it.

Choice A reason: Hypokalemia is a low level of potassium in the blood. Furosemide is a loop diuretic that increases the excretion of water and electrolytes, including potassium. Hypokalemia can cause muscle weakness, cramps, arrhythmias, and digoxin toxicity.

Choice B reason: Hypoglycemia is a low level of glucose in the blood. Furosemide does not affect blood glucose levels or insulin secretion. Hypoglycemia may be caused by other factors such as diabetes medications, fasting, or alcohol intake.

Choice C reason: Weight gain is not an adverse effect of furosemide. Furosemide causes weight loss by reducing fluid retention and edema. Weight gain may be a sign of worsening heart failure or fluid overload.

Choice D reason: Increased blood pressure is not an adverse effect of furosemide. Furosemide lowers blood pressure by decreasing blood volume and cardiac preload. Increased blood pressure may be caused by other factors such as salt intake, stress, or kidney disease.