Correct Answer: A

Rationale: The correct answer is A. When a client receives antibiotics 2 hours late, it constitutes a medication error, requiring the completion of an incident report. Choice B, a client vomiting within 20 minutes of taking medications, does not necessarily require an incident report unless it is suspected to be related to a medication error. Choice C, a client requesting a statin at a specific time, and choice D, a client asking for pain medication an hour early, are not incidents that mandate the completion of an incident report unless there are specific circumstances indicating otherwise.

Correct Answer: D

Rationale: The correct answer is D. A low potassium level (3.1 mEq/L) can increase the risk of digoxin toxicity. Hypokalemia can potentiate the effects of digoxin on the heart, leading to serious dysrhythmias. Choices A, B, and C are within normal ranges and do not indicate a need to withhold digoxin.

Correct Answer: C

Rationale: The correct answer is C because freezing of feet while walking is a sign of impaired mobility, indicating the need for physical therapy in clients with Parkinson's disease. Choices A, B, and D are symptoms commonly associated with Parkinson's disease but do not specifically indicate the need for immediate referral to physical therapy.

Correct Answer: D

Rationale: Administering a local anesthetic at the injection site can help reduce pain during immunizations in infants. Options A, B, and C are incorrect. Administering the immunization in the deltoid muscle may not provide pain relief. Applying a cold compress or pressure to the injection site is not as effective as using a local anesthetic to reduce pain.

Correct Answer: D

Rationale: The correct answer is D: Tachycardia. In clients with hyperthyroidism, tachycardia is a common finding due to the increased metabolic rate. Weight loss and heat intolerance are also expected due to the elevated metabolism. Choices A, B, and C (Weight gain, dry skin, cold intolerance) are not typical findings in hyperthyroidism, as the condition is associated with an overactive thyroid gland leading to an increase in metabolic functions.