A nurse is teaching a client who has an ileostomy about the care of their stoma. Which of the following statements by the client indicates an understanding of the teaching?

Choice A reason: Varicella, a viral infection, is not treated with antibiotics, which target bacteria. Returning to school after 24 hours of antibiotics is incorrect, as contagiousness persists until lesions crust, typically 5-7 days, risking transmission if the child returns prematurely.
Choice B reason: A negative titer result indicates immunity or resolved infection but is not a practical criterion for school return. Varicella contagiousness depends on lesion crusting, not serology, which is complex and unnecessary when clinical signs confirm reduced infectivity in affected children.
Choice C reason: Fever subsidence does not ensure non-contagiousness in Varicella. The virus spreads via respiratory droplets and lesions until crusted. Allowing return based on fever ignores transmission risk, as active lesions remain infectious, potentially spreading the virus in school settings.
Choice D reason: Varicella is contagious until lesions crust over, typically 5-7 days post-rash. Crusting indicates the end of viral shedding, ensuring safety for school return. This aligns with infection control guidelines, preventing transmission via contact or respiratory routes in communal settings.

Choice A reason: Applying nitroglycerin ointment in a thin, even layer ensures consistent absorption for angina relief, as specified by dosing guidelines (e.g., using a dosing paper). This maximizes efficacy and minimizes side effects like hypotension, aligning with manufacturer instructions, making it the correct teaching point.
Choice B reason: Applying to the forearm is not standard, as nitroglycerin ointment is typically applied to the chest, upper arm, or back for optimal absorption. Forearm application may reduce effectiveness due to skin thickness, making this an incorrect site choice.
Choice C reason: Applying every 4 hours is incorrect, as nitroglycerin ointment is typically applied 2-3 times daily, with a 12-hour nitrate-free interval to prevent tolerance. This frequency is too frequent and risks side effects, making it an inaccurate instruction.
Choice D reason: Massaging nitroglycerin ointment into the skin is contraindicated, as it alters absorption rates and may cause inconsistent dosing or irritation. The ointment is spread lightly and covered, making this instruction incorrect and potentially harmful for proper administration.