Which measure most effectively reduces the risk of health care-associated infections? A. Keeping employee health records up-to-date B. Performing hand hygiene C. Providing annual influenza vaccinations D. Always wearing a mask when caring for patients Rationale: Performing hand hygiene in compliance with the World Health Organization or Centers for Disease Control and Prevention guidelines is the most effective in reducing the risk of health care-associated infections. Keeping employee health records up-to-date (Option A), providing annual influenza vaccinations (Option C), and always wearing a mask when caring for patients (Option D) aren't the most effective ways to reduce the risk of health care-associated infections. Which action should the nurse take when receiving a telephone order from a physician? A. Inform the physician that telephone orders are not permitted. B. Write the order in the patient's medical record immediately. C. Write down the order and then read back the complete order to the physician. D. Immediately carry out the order. Rationale: When receiving a telephone or other verbal order, the nurse should write down the order and then read back the complete order to the physician to verify its accuracy. Options A, B, and D aren't appropriate actions for the nurse to take when receiving a telephone order from a physician. A secondary latency phase that occurs in some diseases that is commonly followed by another acute phase is referred to as: A. remission. B. convalescence. C. the acute phase. D. the subclinical acute phase. Rationale: A secondary latency phase that occurs in some diseases that is commonly followed by another acute phase is referred to as remission. Convalescence (Option B) is progression toward recovery. The acute phase (Option C) refers to the disease at its full intensity, possibly with complications. The subclinical acute phase (Option D) occurs when the p