Correct Answer: A

Rationale: The most common cause of acute renal failure is shock. In cases of shock, such as hypovolemic shock where there is low blood volume, the kidneys receive inadequate blood flow leading to acute renal failure. This can result in the kidneys starting to die within 20 minutes of low pressure. While nephrotoxic drugs can also cause acute renal failure, shock is more commonly associated with this condition. An enlarged prostate can lead to urinary retention but is not the most common cause of acute renal failure. Diabetes, on the other hand, can cause chronic kidney disease over time but is not typically the primary cause of acute renal failure.

Correct Answer: B

Rationale: The correct position for a client post liver biopsy procedure is the right side. Placing the client on the right side helps apply pressure to the liver area, which can help in holding pressure and stopping bleeding. Placing the client on the left side may not be as effective in providing direct pressure on the liver. The prone position is also not ideal for post-liver biopsy care as it does not target the liver area directly. Fowler's position, a semi-sitting position, is not typically recommended post liver biopsy as it does not provide the necessary pressure on the liver site.

Correct Answer: A

Rationale: The correct answer is to delegate the task of transferring the patient to the shower to a nursing assistant. Nursing assistants are trained to assist with transfers safely, making this task appropriate for delegation. Ambulating the patient for the first time involves assessing the patient's mobility and tolerance, which requires more assessment and monitoring by a nurse, especially in a patient with fibromyalgia and COPD. Taking the patient's breath sounds involves assessing the patient's respiratory status, which is a nursing responsibility due to the need for clinical judgment. Educating the patient on monitoring fatigue involves providing vital information and should be done by the nurse to ensure comprehensive understanding and tailored recommendations.

Correct Answer: B

Rationale: The correct answer is 'Has a cardiac pacemaker.' If a client with a cardiac pacemaker undergoes an MRI, the magnetic field can interfere with the pacemaker's function, leading to serious complications or even death. It is crucial to ensure that the pacemaker is compatible with MRI imaging or to consider alternative imaging modalities. The other choices, such as 'Allergy to shellfish,' 'A diabetic,' and 'No IV access,' are not direct contraindications for an MRI scan and do not pose the same level of risk as having a cardiac pacemaker.

Correct Answer: A

Rationale: In this scenario, the client is exhibiting Cheyne-Stokes respirations, which are characterized by periods of deep breathing alternating with apnea. This pattern indicates respiratory insufficiency, resulting in an accumulation of carbon dioxide in the blood. The elevated BP and slow heart rate further support the respiratory insufficiency, leading to respiratory acidosis. Therefore, the correct answer is Respiratory acidosis. Choices B, C, and D are incorrect. Respiratory alkalosis is characterized by decreased carbon dioxide levels in the blood, which is not indicated by the client's presentation. Metabolic acidosis results from conditions such as renal failure or diabetic ketoacidosis and is not the primary imbalance in this case. Metabolic alkalosis is characterized by elevated pH and bicarbonate levels, which are not present in the client's vital signs.