Correct Answer: C

Rationale: The correct answer is C. When a client understands the teaching about iron supplements, they should know that black, tarry stools are a normal side effect. This indicates that the medication is being absorbed and working effectively. Choices A and B are incorrect because iron supplements should not be taken with milk or orange juice, as these can interfere with the absorption of iron. Choice D is also incorrect because iron supplements are usually best absorbed on an empty stomach, so taking them before bedtime may not be ideal.

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: D

Rationale: The correct answer is D. Calf pain on dorsiflexion following knee surgery may indicate a complication such as deep vein thrombosis, which is a serious condition requiring medical attention. Reporting this finding promptly is crucial to prevent further complications. Choices A, B, and C are within normal range for a client post knee surgery and do not typically indicate immediate complications that require urgent reporting.

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: C

Rationale: The correct answer is C: Tachycardia. Tachycardia is a common sign of dehydration because the body tries to compensate for the reduced fluid volume by increasing the heart rate. Bradycardia (choice A) is not typically seen in dehydration as the body tries to maintain perfusion. Increased skin turgor (choice B) is actually a sign of dehydration, but tachycardia is a more specific finding. A bounding pulse (choice D) is associated with conditions like hyperthyroidism or aortic regurgitation, not dehydration.