Correct Answer: A

Rationale: Tachycardia is the correct answer as it is an adverse effect of levothyroxine. Levothyroxine is a medication used to treat hypothyroidism by supplementing the body with thyroid hormone. Tachycardia, or a fast heart rate, can indicate an overdosage or increased sensitivity to levothyroxine. Bradycardia, slow heart rate, weight loss, and increased appetite are not typically associated with adverse effects of levothyroxine. Bradycardia may actually be a symptom of untreated hypothyroidism.

Correct Answer: B

Rationale: The correct answer is B: INR. The International Normalized Ratio (INR) is the most reliable test for evaluating the therapeutic effects of warfarin therapy. INR measures the clotting ability of the blood and helps determine if the dosage of warfarin is within the therapeutic range. Choice A, aPTT, is not typically used to monitor the effects of warfarin. Choice C, Serum glucose, and choice D, Bilirubin, are not relevant to monitoring the therapeutic effect of warfarin.

Correct Answer: B

Rationale: The correct action when administering a bisacodyl suppository is to lubricate the index finger for easier insertion. Using a rectal applicator for insertion is not recommended for bisacodyl suppositories. Positioning the client supine with knees bent is not necessary for the administration of a bisacodyl suppository. While wearing gloves is important for infection control, sterile gloves are not required for this procedure.

Correct Answer: B

Rationale: The correct instruction for administering insulin is to rotate injection sites to prevent lipodystrophy, a common complication of insulin therapy. Injecting into the deltoid muscle (Choice A) is not recommended for insulin injections. Massaging the site after injection (Choice C) is not necessary and can potentially increase the risk of lipodystrophy. Using the same site for each injection (Choice D) can lead to localized tissue damage and absorption irregularities, making it an incorrect choice.

Correct Answer: A

Rationale: A persistent dry cough is a common side effect of lisinopril. Lisinopril is an ACE inhibitor that can cause a cough due to the accumulation of bradykinin. Weight gain, dry mouth, and hyperglycemia are not typically associated with lisinopril use, making them incorrect choices in this scenario.