A nurse is preparing to obtain a blood specimen from a client's central venous access device. Prior to collecting the specimen, the nurse should clean the connection thoroughly with which of the following antiseptics?
Povidone-iodine
Hydrogen peroxide
2% chlorhexidine
70% alcohol solution
The Correct Answer is C
A. Povidone-iodine: Although effective for skin disinfection, povidone-iodine requires a long drying time and is not the preferred agent for disinfecting the access port of central lines. It is more commonly used for preparing the skin before catheter insertion, not for port access.
B. Hydrogen peroxide: Hydrogen peroxide is not recommended for disinfecting central venous access devices due to its cytotoxic properties and potential to damage catheter materials. It can also irritate tissue and is not effective against all organisms.
C. 2% chlorhexidine: Chlorhexidine is the preferred antiseptic for disinfecting central venous catheter ports. It offers rapid, broad-spectrum antimicrobial action and prolonged residual activity, making it ideal for preventing catheter-related bloodstream infections.
D. 70% alcohol solution: Alcohol is commonly used but lacks the persistent antimicrobial activity of chlorhexidine. While it can reduce surface microbes, it is less effective at preventing infection over time compared to 2% chlorhexidine.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Apply lotion to the newborn's skin every 4 hr: Lotions or ointments should be avoided during phototherapy because they can interact with the light and increase the risk of skin irritation or burns. The newborn’s skin should be kept clean and dry.
B. Keep the newborn's head covered with a cap: Covering the head is unnecessary and may interfere with heat dissipation. Phototherapy aims to expose as much skin as possible while protecting the eyes with an eye shield.
C. Supplement the newborn with glucose water between feedings: Glucose water is not recommended. Frequent breastfeeding or formula feeding supports hydration and promotes bilirubin excretion more effectively than glucose water.
D. Reposition the newborn every 2 hr: Frequent repositioning helps expose different areas of skin to the phototherapy light, promoting even breakdown of bilirubin and preventing pressure injuries. It is an essential part of nursing care during phototherapy.
Correct Answer is B
Explanation
A. "You should apply moist heat to your breasts four times per day." Applying heat to the breasts stimulates circulation and milk flow, which can actually promote lactation rather than suppress it. Cold compresses, not heat, are recommended for lactation suppression.
B. "You should wear a snug-fitting bra continuously for 72 hours." A snug, supportive bra helps minimize breast stimulation and reduces discomfort from engorgement. Wearing it continuously supports lactation suppression by preventing nipple stimulation and milk letdown.
C. "You should limit your fluid intake to 1 liter per day." Restricting fluids does not significantly reduce milk production and may lead to dehydration. Adequate hydration is still important for postpartum recovery, even when not breastfeeding.
D. "You should manually express milk when engorgement occurs." Manual expression stimulates the breasts and can trigger ongoing milk production. Instead, cold compresses and analgesics should be used to manage engorgement without encouraging further lactation.
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