A nurse is teaching a client who has a new prescription for sumatriptan (Imitrex) tablets to treat migraine headaches. Which of the following instructions should the nurse include?

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.

Choice A: Administer corticosteroids. This is incorrect because corticosteroids are used to reduce inflammation and suppress the immune system, but they do not directly affect venous return, stiffness, or muscle strength and endurance.

Choice B: Turn and reposition every 2 hours. This is incorrect because turning and repositioning are important to prevent pressure ulcers and promote circulation, but they are not sufficient to maintain muscle strength and endurance. The client also needs active or passive exercises to prevent muscle atrophy and contractures.

Choice C: Administer interferon. This is incorrect because interferon is a type of immunomodulator that can reduce the frequency and severity of relapses in multiple sclerosis, but it does not directly affect venous return, stiffness, or muscle strength and endurance.

Choice D: Encourage range-of-motion exercises. This is correct because range-of-motion exercises can help increase venous return, prevent stiffness, and maintain muscle strength and endurance in clients with multiple sclerosis. Range-of-motion exercises can be performed actively by the client or passively by the nurse or a caregiver. They should be done at least twice a day to prevent complications such as contractures, spasticity, and pain.