Correct Answer: D

Rationale: Community health nurses play a vital role in promoting community health by providing health education to vulnerable populations (Choice A), coordinating access to integrated care for the population (Choice B), and developing comprehensive health care systems in various settings (Choice C). These contributions work together to enhance the overall health and well-being of the community, making choice D, 'all of the above,' the correct answer. Choices A, B, and C are all essential aspects of the multifaceted approach that community health nurses take to improve the health outcomes of the community.

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 case fatality ratio is calculated as (deaths/cases) * 100. In this case, there were 2 deaths out of 8 cases. Therefore, the calculation is (2/8) * 100 = 25%. Choices A, B, and C are incorrect as they do not match the correct calculation.

Correct Answer: B

Rationale: The Healthy People initiative is a national agenda that focuses on reducing health disparities and improving the health of all Americans. Choice A is incorrect because the initiative is more about improving health outcomes and access rather than providing healthcare to all citizens. Choice C is not the main goal of the initiative, which is more about public health goals than medical research. Choice D is also not the primary aim of the Healthy People initiative, as it is more focused on setting objectives to improve public health.

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.