A nurse is assisting in the plan of care for a client who has hypernatremia. Which of the following IV solutions should the nurse plan to initiate?

D. After administering the PPD solution intradermally, the nurse should not withdraw the needle and massage the site. Massaging can cause the PPD to disperse outside the intended area and affect the accuracy of the test result. Instead, the nurse should gently blot the site with a gauze pad if there is any bleeding, without massaging.

A. For a Mantoux tuberculin skin test, the standard technique involves injecting a small amount of tuberculin purified protein derivative (PPD) intradermally to create a wheal or bleb that is typically 6 mm in diameter. If the nurse creates a bleb significantly larger or smaller than the recommended size, it could affect the interpretation of the test result.

B. It's important to avoid visualizing the needle tip under the skin during the injection. This can lead to inaccurate placement of the PPD solution, potentially resulting in an improperly administered test.

C. Stretching the skin tightly before injection is actually a correct technique for performing a Mantoux tuberculin skin test. This helps stabilize the injection site and ensures the needle is inserted at the correct angle for an intradermal injection.

B. This range represents the normal serum magnesium level. It is important for maintaining neuromuscular function and other vital processes in the body.

A. This range is too low for normal serum magnesium levels. Magnesium levels below this range can indicate hypomagnesemia, which can lead to symptoms such as muscle cramps, tremors, and cardiac arrhythmias.

C. This range is too high for normal serum magnesium levels. Elevated magnesium levels (hypermagnesemia) can occur in conditions such as renal failure or excessive magnesium intake, leading to symptoms like weakness, decreased reflexes, and in severe cases, cardiac arrest.

D. While this range is broader and includes the correct normal range (1.3-2.1 mEq/L), it also includes values that are below and above normal. Values below 1.3 mEq/L can indicate hypomagnesemia, while values above 2.1 mEq/L can indicate hypermagnesemia.