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

0.5-1.5mEq/L

1.3-2.1 mEq/L

2.5-3.5 mEq/L

1.0-3.0 mEq/L

Answer and Explanation

The Correct Answer is B

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.

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Correct Answer is C

Explanation

C. Dextrose 5% in water is a hypotonic solution that contains 5 grams of dextrose in each 100 mL of water. It provides free water without adding significant sodium, which helps to dilute the elevated sodium levels in hypernatremia. This solution is effective in correcting hypernatremia by promoting water movement from the intravascular space into the cells and extracellular space.

A. Albumin solutions are primarily used for volume expansion and to increase oncotic pressure in conditions like hypoalbuminemia or shock. They do not provide free water and are not typically used for treating hypernatremia.

B. Dextrose 10% in water is a hypertonic solution used primarily for providing calories and treating hypoglycemia. It does not correct hypernatremia because it does not significantly affect sodium levels or provide sufficient free water to dilute sodium.

D. Dextran 40 is a colloid solution that is used for volume expansion in hypovolemia or shock. It does not provide free water and is not indicated for correcting hypernatremia.

A. Ensure the client's IV solution is changed every 48 hr B. Check the client's IV site every 8 hr. C. Change the client's IV tubing every 96 hr. D. Replace the client's transparent IV dressing every 24 hr.

Correct Answer is A

Explanation

A. IV solutions and administration sets should typically be changed every 48 to 72 hours to reduce the risk of contamination and infection. This interval helps prevent the buildup of bacteria in the solution and tubing, which could lead to bloodstream infections (BSIs).

B. Checking the client's IV site every is also important for monitoring for signs of infection, infiltration, or phlebitis. However, every 8 hours is too frequent and unnecessary

C. IV tubing should be changed every 72 hours not every 96 hours. Prolonging the use of IV tubing beyond this timeframe increases the risk of bacterial contamination and infection.

D. Transparent dressings are usually changed every 5 to 7 days, or sooner if they become soiled or compromised.

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

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Naxlex Comprehensive Predictor Exams

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?

Correct Answer is C

Explanation

A nurse is caring for a client who is receiving a continuous IV infusion through a short-peripheral device. Which of the following actions should the nurse take?

Correct Answer is A

Explanation

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

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