A nurse is preparing to administer the hepatitis B vaccine to a client. Which of the following techniques should the nurse use to locate the deltoid muscle?

B. Swelling around the IV site or in the extremity (such as the fingers) can be a sign of infiltration. This occurs because the IV fluid leaks into the surrounding tissues, causing localized swelling.

A. Blood backing up in the IV tubing could indicate issues like a clot in the line or a slow flow rate, but it does not specifically suggest infiltration. It might prompt the nurse to check for other issues such as patency of the IV line or the need for flushing.

C. A long red streak up the arm could indicate inflammation or infection along the vein (phlebitis) rather than infiltration. Phlebitis can be caused by mechanical irritation, chemical irritation from the IV fluids, or infection.

D. Tape coming off the IV needle suggests a need for re-securing the IV, but it does not directly indicate infiltration. However, if the tape is coming off, it's important to check the entire IV site to ensure the catheter is still properly inserted and there are no signs of infiltration or dislodgment.

D. Holding the skin taut helps stabilize the area and ensures that the needle penetrates the skin smoothly and at the correct angle. This also helps prevent the needle from going too deep or slipping out of the site during injection.

A. The syringe should be held at a 5 to 15-degree angle to the client's skin, not 20 degrees.

B. For a tuberculin skin test (PPD test), typically 0.1 mL (one-tenth of a milliliter) of PPD is injected intradermally. This is a very small amount compared to 0.5 mL.

C. The length of the needle for an intradermal injection is typically shorter than 1 inch, usually around 3/8 to 5/8 inches (10-16 mm). Using a longer needle may increase the risk of inserting the needle too deeply, potentially leading to subcutaneous rather than intradermal injection.