Correct Answer: C

Rationale: The correct answer is C: Impaired gas exchange. In a client with an acute myocardial infarction, impaired gas exchange is a priority nursing diagnosis due to compromised heart function, which affects oxygenated blood circulation. Close monitoring and interventions are crucial to ensure adequate oxygenation. Choices A, B, and D are incorrect: A) Constipation related to immobility is not the priority in this acute situation; B) High risk for infection is not the immediate concern related to the client's primary diagnosis; D) Fluid volume deficit, while important, is not the priority compared to addressing impaired gas exchange in acute MI.

Correct Answer: A

Rationale: The correct answer is A: Cigarette smoking. Cigarette smoking is a significant risk factor for low birth weight. Smoking during pregnancy reduces the amount of oxygen available to the baby, leading to LBW. Choice B, African American ethnicity, while it may be a risk factor, is not as directly linked to LBW as cigarette smoking. Choice C, poor nutritional status, can contribute to LBW but is not as significant as cigarette smoking in this case. Choice D, limited maternal education, is an important social determinant of health but is not as directly related to LBW as cigarette smoking.

Correct Answer: C

Rationale: The correct answer is C: 'The stomach contents and air must be drained first.' Before starting feedings through a gastrostomy tube, it is essential to drain the stomach contents and air. This process helps prevent complications and ensures the proper functioning of the tube after placement. Choice A is incorrect because initiating feedings within 5 to 7 days may lead to complications if the stomach is not adequately prepared. Choice B is incorrect as feeding should not begin immediately to allow for proper preparation of the tube and the stomach. Choice D is incorrect because although incision healing is important, draining the stomach contents and air is a more immediate concern to prevent complications.

Correct Answer: B

Rationale: The quality assurance committee is responsible for reviewing and planning policies and education related to workplace safety. This committee focuses on ensuring the quality of care and services provided, which includes implementing safety measures. The policy and procedures committee primarily deals with developing and maintaining organizational policies and procedures. The education committee focuses on educational programs and initiatives, not specifically on safety policies. The ethics committee is concerned with ethical issues and dilemmas, not safety policies and education.

Correct Answer: D

Rationale: The best approach when teaching a responsible family member a procedure for the patient is to demonstrate the procedure. By demonstrating, the family member can visually see how it is done, making it easier for them to understand and replicate. This hands-on approach is more effective than just describing the procedure (choice C) or arranging for practice (choice B) without a visual demonstration. Performing all the steps (choice A) may not be practical or necessary when the goal is to teach someone else how to do it.