Correct Answer: B

Rationale: Muscle cramps and tingling in clients with chronic renal failure are often associated with hypocalcemia. Monitoring calcium levels is crucial to identify imbalances and manage symptoms appropriately. Sodium, phosphate, and potassium levels are important in renal failure but are not directly related to the symptoms of muscle cramps and tingling reported by the client.

Correct Answer: B

Rationale: The correct answer is B: 'Murmur.' A murmur is a swishing sound heard during auscultation, typically caused by turbulent blood flow through the heart or valves. Choices C and D, 'S3 sound' and 'S4 sound,' refer to specific heart sounds associated with different cardiac conditions, not the general description of a swishing sound. Choice A, 'Heart murmur,' is redundant as 'murmur' alone is sufficient to describe the swishing sound heard.

Correct Answer: A

Rationale: The correct answer is to administer antithyroid medications as prescribed during a thyroid storm. Antithyroid medications help control the overproduction of thyroid hormones, which is crucial in managing symptoms such as increased heart rate and tremors. These symptoms can be life-threatening if not promptly addressed. Administering a beta-blocker (Choice B) may help control the heart rate, but addressing the underlying cause with antithyroid medications is the priority. Monitoring the client's temperature (Choice C) is important but not the priority intervention during a thyroid storm. Lastly, preparing the client for an emergency thyroidectomy (Choice D) is not the initial intervention for managing symptoms of a thyroid storm.

Correct Answer: C

Rationale: The correct answer is C, 'Highly protein-bound.' Drugs that are highly protein-bound can displace from protein-binding sites, leading to increased free drug levels in the blood, which can result in toxicity. Monitoring the client for toxicity is crucial when administering highly protein-bound drugs. Choices A, B, and D are incorrect. A short half-life does not necessarily indicate a need for monitoring toxicity; a high therapeutic index indicates a wide safety margin between the effective dose and the toxic dose, reducing the risk of toxicity; low bioavailability refers to the fraction of the drug that reaches the systemic circulation unchanged and does not directly relate to the risk of toxicity.

Correct Answer: D

Rationale: When caring for a client with active tuberculosis, it is crucial to implement negative pressure rooms and contact precautions to prevent the spread of infection. Choice A, initiating protective environment precautions, is incorrect as this is not the recommended approach for tuberculosis. Choice B, using droplet precautions only, is insufficient as tuberculosis requires additional precautions. Choice C, ensuring a positive pressure environment in the room, is incorrect because negative pressure rooms are necessary to contain airborne pathogens like tuberculosis. Therefore, the most appropriate measures include implementing negative pressure rooms and contact precautions.