A nurse is preparing to assist with an ocular irrigation for a client who had a chemical splash to the left eye. Which of the following actions should the nurse plan to take?

Choice A reason: Aspirating the catheter to check for a brisk blood return is not typically recommended as a routine action when replacing the dressing of a PICC line used for TPN. This action is performed to verify patency and placement of the catheter, but it is not directly related to the dressing change procedure.

Choice B reason: Using sterile technique for the procedure is essential when replacing the dressing of a PICC line. Maintaining sterility is crucial to prevent infection, as the PICC line provides direct access to the central venous system. The nurse should use sterile gloves and follow aseptic protocols to minimize the risk of introducing pathogens at the catheter insertion site.

Choice C reason: Cleansing the insertion site with hydrogen peroxide is not recommended for PICC line care. Hydrogen peroxide can be damaging to the tissue and may delay healing. Instead, a chlorhexidine-based antiseptic is typically used to clean the skin around the insertion site during dressing changes to reduce microbial flora and prevent infection.

Choice D reason: Flushing the TPN port with 20 mL of 0.9% sodium chloride is a practice used to maintain catheter patency, but it is not part of the dressing change procedure. Flushing is usually done before and after administering medication or nutrition, not specifically during a dressing change.

Choice A reason: Laryngeal edema is a classic sign of anaphylaxis, a severe and potentially life-threatening allergic reaction. It can lead to difficulty breathing and requires immediate medical attention. Anaphylaxis can occur with any medication, including captopril, especially on initial exposure.

Choice B reason: Fever is not typically a sign of anaphylaxis. While it can be a symptom of various infections or inflammatory processes, it is not indicative of an immediate hypersensitivity reaction.

Choice C reason: Hypertension, or high blood pressure, is not a sign of anaphylaxis. In fact, during an anaphylactic reaction, blood pressure often drops significantly, a condition known as anaphylactic shock.

Choice D reason: Arrhythmia, or an irregular heartbeat, can be associated with various cardiac conditions but is not a specific indicator of anaphylaxis. While severe allergic reactions can affect heart rate, they are more likely to cause hypotension than arrhythmia.