Magnesium is located primarily in the bones an inside cells. It is responsible for neuromuscular function. Normal magnesium (Mg+) level is

C. This method is recommended because it is less painful, as the sides of the fingertips have fewer nerve endings compared to the pads or 'balls' of the fingers.

A. Avoiding the use of the thumbs is not necessary unless they are calloused or used frequently for other tasks that could affect sensitivity.

B. Avoiding the use of the dominant hand's fingers are not necessary unless they are calloused or used frequently for other tasks that could affect sensitivity.

D. Using the ball of the finger is not recommended for blood glucose monitoring because it can be more painful and may lead to less blood flow, resulting in difficulty obtaining an adequate blood sample.

B When drawing medication from an ampule, especially if it's a solution that may contain particulate matter or to ensure sterility, using a filter needle is recommended. A filter needle has a membrane filter that prevents particles from being drawn into the syringe while allowing the medication to pass through.

A. Shaking a glass ampule is not recommended because it can lead to the introduction of glass particles or cause the solution to foam or become contaminated. Instead, gently flicking the ampule with a finger can help move any solution that may be adhering to the neck downward, but shaking should be avoided.

C. While wearing gloves is important for infection control, sterile gloves are not typically required for withdrawing medication from a single-dose glass ampule. Standard aseptic technique and hand hygiene are usually sufficient.

D. Ampules are designed to be opened by snapping the top away from the body to avoid potential injury from glass shards. The nurse should use a gauze pad or an ampule opener to break the ampule open safely, directing any breakage away from themselves and others.