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.
Advances in surgical techniques and procedures
Sanitation and other public health activities
Technology increases in the field of medical laboratory research
Use of antibiotics to fight infections
The Correct Answer is B
Choice A reason: Advances in surgical techniques and procedures have improved the outcomes of many patients, but they are not the main factor for the increase in life expectancy. Surgical interventions are often costly, risky, and inaccessible to many people, especially in developing countries.
Choice B reason: Sanitation and other public health activities have had a significant impact on reducing mortality from infectious diseases, such as cholera, typhoid, and tuberculosis. These activities include providing safe water, improving hygiene, promoting vaccination, and controlling vector-borne diseases. Sanitation and public health measures are relatively low-cost, effective, and preventive strategies that can benefit large populations.
Choice C reason: Technology increases in the field of medical laboratory research have contributed to the diagnosis and treatment of many diseases, such as cancer, diabetes, and genetic disorders. However, these technologies are often expensive, complex, and dependent on specialized equipment and personnel. Therefore, they are not the main reason for the increase in life expectancy.
Choice D reason: The use of antibiotics to fight infections has been a major breakthrough in medicine, saving millions of lives from bacterial infections. However, antibiotics have also led to the emergence of antibiotic-resistant bacteria, which pose a serious threat to public health. Moreover, antibiotics are not effective against viral infections, such as influenza, HIV, and COVID-19. Therefore, antibiotics are not the most responsible factor for the increase in life expectancy.

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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: Mitigation is not the correct level of the National Response Framework, as it refers to the actions taken to reduce or eliminate the long-term risk to human life and property from natural or man-made hazards. Mitigation activities include implementing building codes, zoning ordinances, land use planning, and flood insurance programs. Mitigation is a continuous process that occurs before, during, and after a disaster.
Choice B reason: Security is not the correct level of the National Response Framework, as it refers to the actions taken to protect the nation from threats or attacks by terrorists, criminals, or hostile states. Security activities include conducting intelligence operations, screening travelers and cargo, enforcing laws and regulations, and preventing cyberattacks. Security is a shared responsibility among federal, state, local, tribal, territorial, and private sector partners.
Choice C reason: Preparedness is the correct level of the National Response Framework, as it refers to the actions taken to plan, organize, equip, train, and exercise to build and sustain the capabilities necessary to prevent, protect against, mitigate the effects of, respond to, and recover from those threats that pose the greatest risk. Preparedness activities include developing emergency plans, conducting drills and exercises, educating the public, and establishing partnerships and coordination mechanisms. Preparedness is a continuous cycle of improvement that involves assessing needs, setting goals, implementing plans, and evaluating outcomes.
Choice D reason: The response phase is not the correct level of the National Response Framework, as it refers to the actions taken to save lives, protect property and the environment, stabilize the situation, and meet basic human needs in the immediate aftermath of a disaster. Response activities include activating emergency operations centers, deploying resources and personnel, providing mass care and sheltering, restoring critical infrastructure and services, and conducting search and rescue operations. Response is a short-term process that aims to restore normalcy as soon as possible.
Correct Answer is D
Explanation
Choice A reason: The client's financial resources is not the most important factor for the nurse to consider. Although Meals-on-Wheels is a low-cost or free service that provides nutritious meals to homebound seniors and people with disabilities, it does not require a specific income level or financial status to qualify. The nurse should focus on the client's nutritional and functional needs, rather than their economic situation.
Choice B reason: The client's level of family support is not the most important factor for the nurse to consider. Although having family members who can assist with meal preparation and delivery can be helpful and beneficial for the client, it is not a requirement or a guarantee for receiving Meals-on-Wheels. The nurse should assess the client's individual capabilities and preferences, rather than their family availability or involvement.
Choice C reason: The client's access to transportation is not the most important factor for the nurse to consider. Although having access to transportation can enable the client to obtain food and groceries from other sources, such as stores, markets, or restaurants, it is not a criterion or a barrier for receiving Meals-on-Wheels. The nurse should evaluate the client's dietary and health needs, rather than their mobility or transportation options.
Choice D reason: The client's ability to prepare meals is the most important factor for the nurse to consider. Meals-on-Wheels is designed to serve clients who are unable to cook or shop for themselves due to physical, mental, or social limitations. The nurse should determine if the client has any impairments or challenges that prevent them from preparing their own meals, such as vision loss, arthritis, dementia, or isolation. If the client has difficulty or inability to prepare meals, they may be eligible for Meals-on-Wheels.
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