A nursing preceptor is reviewing life expectancy in the twentieth century with a new nurse. The nurse should recognize that which of the following was most responsible for the dramatic increase in life expectancy during the twentieth century.

Choice A reason: Giving care with a focus on the aggregate's needs is not the best description of client-focused community-based nursing, as it implies that the nurse is providing care to a population or a group of individuals who share some common characteristics or risk factors. This is more aligned with the concept of population-focused community-based nursing, which aims to improve the health outcomes of a defined group of people.

Choice B reason: A philosophy that guides family-centered illness care is the best description of client-focused community-based nursing, as it reflects the core values and principles of this approach. Client-focused community-based nursing is a model of care that emphasizes the individual and family as the unit of care, rather than the disease or the health problem. It involves collaborating with the client and family to identify their needs, preferences, strengths, and resources, and providing holistic, culturally sensitive, and evidence-based care that promotes health, wellness, and quality of life.

Choice C reason: Providing care with a focus on the group's needs is not the best description of client-focused community-based nursing, as it suggests that the nurse is providing care to a collective or a social unit that shares some common goals or interests. This is more aligned with the concept of community-oriented community-based nursing, which aims to improve the health status of a specific community or subpopulation.

Choice D reason: A value system in which all clients receive optimal care is not the best description of client-focused community-based nursing, as it does not capture the essence or uniqueness of this approach. While it is true that client-focused community-based nursing strives to provide high-quality care to all clients, it also recognizes that each client and family has different needs, preferences, and expectations that require individualized and tailored interventions.

Choice A reason: "Diet and exercise is good for you and good for your heart." This statement is true, but it is not the appropriate nursing response. It does not address the client's concerns or provide any specific information about cardiac rehabilitation. It may also sound dismissive or patronizing to the client.

Choice B reason: "It's not unusual to feel that way at first, but once you learn the routine, you'll enjoy it." This statement is empathetic, but it is not the appropriate nursing response. It does not explain the purpose or benefits of cardiac rehabilitation. It may also sound unrealistic or optimistic to the client.

Choice C reason: "Cardiac rehabilitation cannot undo the damage to your heart, but it can help you get back to your previous level of activity safely." This statement is the appropriate nursing response. It acknowledges the client's condition and provides factual information about cardiac rehabilitation. It also emphasizes the positive outcomes of cardiac rehabilitation, such as improving physical function, reducing symptoms, and preventing further complications.

Choice D reason: "Your doctor is the expert here, and I'm sure he would only recommend what is best for you." This statement is respectful, but it is not the appropriate nursing response. It does not answer the client's question or provide any education about cardiac rehabilitation. It may also sound evasive or deferential to the client.