Correct Answer: A

Rationale: Administering oxygen and seeking emergency help are crucial initial steps in managing a patient with suspected myocardial infarction (MI). Oxygen helps to improve oxygenation to the heart muscle, reducing its workload and preventing further damage. Calling for emergency help ensures timely access to advanced medical care, including interventions like thrombolytics. Monitoring vital signs and providing pain relief are important but secondary to the immediate need for oxygen and emergency assistance. Providing nitroglycerin and thrombolytics should be done under medical supervision and following appropriate protocols, not as the first step. Administering diuretics and altering the patient's diet are not indicated in the acute management of MI.

Correct Answer: D

Rationale: The key considerations for managing a patient with COPD include oxygen therapy, which is essential to maintain adequate oxygen saturation levels. While bronchodilators are commonly used to manage COPD symptoms, they are not the primary consideration. Smoking cessation is crucial in preventing further damage but is not a direct management consideration. Pulmonary rehabilitation is beneficial for improving exercise capacity and quality of life but is not as crucial as ensuring adequate oxygen therapy.

Correct Answer: A

Rationale: The correct way to assess and manage a patient with dehydration is to assess skin turgor and monitor intake/output. Skin turgor assessment helps in evaluating the degree of dehydration, while monitoring intake/output aids in maintaining fluid balance. Encouraging oral fluids only (Choice B) may not be sufficient for moderate to severe dehydration as patients may need intravenous fluids (IV) to rapidly rehydrate. Administering IV fluids immediately (Choice C) is not always the first step unless the patient is severely dehydrated. Checking for electrolyte imbalance and administering fluids (Choice D) is important but comes after assessing skin turgor and intake/output in the management of dehydration.

Correct Answer: B

Rationale: The correct action for the nurse to take when caring for a client with schizophrenia experiencing auditory hallucinations is to ask the client directly what they are hearing. This approach helps the nurse gain insight into the client's experience, establish effective communication, and provide appropriate support. Encouraging the client to lie down in a quiet room (Choice A) may not address the hallucinations directly. Telling the client that the voices are not real (Choice C) can be invalidating and may lead to further distress. Providing headphones for music (Choice D) may not be effective in addressing the client's hallucinations.

Correct Answer: B

Rationale: The correct answer is B: 'Keep oxygen tanks upright at all times.' Oxygen tanks should be stored in an upright position to prevent leaks and accidents. Choice A is incorrect as smoking should never be allowed near oxygen due to the risk of fire. Choice C is incorrect as oxygen equipment should be stored in a well-ventilated area, not in a closet. Choice D is incorrect as oxygen tanks must be kept a minimum of 5 to 10 feet away from heat sources to prevent combustion. Therefore, the best practice is to keep oxygen tanks upright to ensure safety.