A 22-year-old dialysis patient presents to the ER with chest pain and palpitations. Laboratory tests reveal a Potassium (K+) level of 7.0 mEq/L. Which electrolyte imbalance is the patient suffering from?

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.

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.