Correct Answer: A

Rationale: A heart rate of 78/min is within the normal range; however, postoperative patients require close monitoring for any signs of complications. While the heart rate is normal, other critical findings such as increased pain, excessive bleeding, or other concerning symptoms may need immediate attention. Choices B, C, and D all indicate normal postoperative vital signs and oxygen saturation levels, which do not raise immediate concerns requiring reporting to the provider.

Correct Answer: D

Rationale: After an acute myocardial infarction, it is important to involve the client in cardiac rehabilitation to help them recover and manage their condition effectively. Performing an ECG every 12 hours is not necessary unless there are specific indications for it. Placing the client in a supine position may not be ideal as it can increase venous return, potentially worsening cardiac workload. Drawing troponin levels every 4 hours is excessive and not recommended as troponin levels usually peak within 24-48 hours post-MI and then gradually decline.

Correct Answer: B

Rationale: The correct answer is to place the client in a high Fowler's position during enteral feedings. This position helps prevent aspiration by promoting the downward flow of the feeding and reducing the risk of regurgitation into the lungs. Choice A is incorrect because flushing the NG tube with 0.9% sodium chloride before feedings is not directly related to preventing aspiration. Choice C is incorrect because the rate of administration does not directly impact the risk of aspiration. Choice D is incorrect because warming the formula does not specifically address the prevention of aspiration during enteral feedings.

Correct Answer: B

Rationale: Verifying the client's blood type and Rh factor is crucial before administering blood products to ensure compatibility and prevent adverse reactions. Option A is incorrect because PRBCs are typically infused over a specific time frame based on hospital policy and client condition, not necessarily over 8 hours. Option C is incorrect as PRBCs are usually administered through a larger gauge catheter to prevent hemolysis. Option D is incorrect because PRBCs are typically administered with normal saline and not lactated Ringer's solution.

Correct Answer: B

Rationale: Clients receiving chemotherapy are instructed to avoid fresh fruits and vegetables to lower the risk of infection. Fresh produce may harbor bacteria or other pathogens that could be harmful to individuals with compromised immune systems. Taking the temperature daily may be important but is not directly related to preventing infection. Limiting high-protein foods is not necessary unless there are specific dietary restrictions due to the treatment plan. Increasing the intake of high-fat foods is not recommended during chemotherapy as a high-fat diet may lead to other health issues.