Correct Answer: A

Rationale: The correct answer is A because it acknowledges the patient's symptoms, reassures monitoring, and addresses the cause. It validates his experience while offering a proactive approach. Choice B is incorrect as it dismisses the patient's symptoms and can cause distress. Choice C is incorrect because it generalizes the patient's experience and lacks individualized care. Choice D is incorrect as it may give false hope and oversimplifies the situation. A provides the best balance of empathy and information for the patient's well-being.

Correct Answer: D

Rationale: The correct answer is D, marginal. Placenta previa is classified based on the proximity of the placental edge to the internal os. In a marginal placenta previa, the placental edge just reaches the internal os. This is a crucial distinction as it poses a higher risk for bleeding during labor. Total placenta previa covers the entire internal os, partial placenta previa partially covers the internal os, and low-lying placenta is when the placenta is close to but not covering the internal os. Therefore, D is correct as it accurately describes the specific position of the placenta edge in relation to the internal os in cases of marginal placenta previa.

Correct Answer: C

Rationale: The correct answer is C: bacterial endocarditis. Mitral valve stenosis increases the risk of bacterial endocarditis due to turbulent blood flow and potential damage to the heart valve. Prophylactic antibiotics are recommended before certain procedures to prevent bacterial endocarditis in patients with underlying cardiac conditions. Choice A, hypertension, is incorrect as mitral valve stenosis does not directly increase the risk of developing hypertension. Choice B, postpartum infection, is not directly related to the risk associated with mitral valve stenosis. Choice D, upper respiratory infections, is not a specific risk associated with mitral valve stenosis in pregnant patients.

Correct Answer: A

Rationale: Step-by-step rationale for why choice A is correct: 1. Increasing physical activity helps in maintaining a healthy weight and overall health. 2. Regular exercise can reduce the risk of chronic diseases like heart disease and diabetes. 3. Physical activity improves mental health and overall well-being. 4. Exercise boosts immunity and helps in managing stress levels. Summary of why other choices are incorrect: B. Keeping total fat intake to 10% or less is a specific dietary recommendation and not a comprehensive approach to staying healthy. C. Maintaining body weight in a healthy range is important but does not encompass all aspects of staying healthy. D. Choosing and preparing foods with little salt is a specific dietary recommendation and does not address the importance of physical activity in staying healthy.

Correct Answer: C

Rationale: The correct answer is C because assessing the patient's wound for dehiscence every 4 hours is crucial post hemicolectomy to monitor for any signs of wound complications, such as infection or tissue breakdown. This allows for early detection and intervention, promoting optimal wound healing and preventing potential complications. Choice A is incorrect as compartment syndrome is not a common complication after a hemicolectomy, and assessing for it hourly would be excessive and unnecessary. Choice B is incorrect as assessing fine motor skills is not a priority in the immediate postoperative period following a hemicolectomy. Choice D is incorrect as maintaining the patient's head of bed at 45 degrees or more is important for preventing respiratory complications, but it is not the top priority compared to wound assessment for dehiscence in this scenario.