Correct Answer: A

Rationale: Talking directly to the adolescent is the most appropriate intervention in this scenario. It helps maintain a sense of connection and respect, even if the response is not evident. Maintaining silence may lead to isolation and hinder any potential communication attempts. Playing soothing music may not provide the personal interaction needed for connection. Limiting visitors to immediate family only may deprive the patient of diverse interactions that could be beneficial for their emotional well-being.

Correct Answer: A

Rationale: The correct answer is A: Magnesium hydroxide (Maalox). In clients with CKD, magnesium can accumulate to toxic levels due to decreased excretion by the kidneys. Therefore, it poses the greatest threat to this client population. Choice B, birth control pills, is not typically contraindicated in CKD. Choice C, cough syrup containing codeine, may require dose adjustments but is not the greatest threat. Choice D, cold medication containing alcohol, is a concern mainly in liver disease, not CKD.

Correct Answer: A

Rationale: The correct answer is A: Ineffective coping related to denial. The client's desire to leave the hospital shortly after a myocardial infarction despite the severity of the condition indicates denial and ineffective coping. This behavior could lead to complications as the client may not adequately address his health needs. Choice B, Risk for impaired cardiac function, is not the most appropriate nursing problem in this scenario as the client's behavior is more indicative of psychological coping issues rather than a direct physiological risk at this moment. Choice C, Noncompliance related to lack of knowledge, does not align with the client's behavior of wanting to leave the hospital. Choice D, Anxiety related to hospitalization, may not be the best option as the client's behavior is more suggestive of denial rather than anxiety about being hospitalized.

Correct Answer: A

Rationale: Correct Answer: The nurse should first place the side rails in an up position. This action is crucial to prevent the client from falling while the bed is being made. Choice B is incorrect as moving or turning the client is not necessary at this point. Choice C is not a priority when immediate safety concerns are present. Choice D, asking the client if they are comfortable, though important, should come after ensuring the client's safety by raising the side rails.

Correct Answer: B

Rationale: The correct answer is B. A serum potassium level of 6.5 mEq/L is dangerously high and should be reported before hemodialysis to prevent cardiac complications. High potassium levels can lead to life-threatening arrhythmias. Serum creatinine (Choice A) is elevated in renal dysfunction but not the most critical value to report before hemodialysis. Serum calcium (Choice C) and serum bicarbonate (Choice D) levels are within normal limits and are not immediate concerns before hemodialysis.