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
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Distal veins, such as those in the hand or forearm of the nondominant arm, are often preferred for initial IV placement. These veins are typically smaller but can be easier to access and cause less discomfort for the patient compared to more proximal veins.
B. Proximal veins, such as those in the upper arm (brachial or basilic veins), may be considered if distal veins are not accessible or suitable. However, proximal veins are larger and can be more difficult to cannulate, potentially causing more discomfort and increasing the risk of complications.
C. The antecubital veins, located in the bend of the elbow, are commonly used for venipuncture due to their accessibility and size. The antecubital vein of the nondominant arm is often preferred to minimize interference with the patient's daily activities and reduce the risk of complications associated with frequent use of the dominant arm.
D. While the antecubital vein of the dominant arm may also be accessible, it is generally recommended to preserve this area for procedures that require a higher level of dexterity and strength. Frequent venipuncture in the dominant arm can lead to discomfort and potential complications, such as phlebitis or thrombosis.
Correct Answer is A
Explanation
A. This indicates a slight positive fluid balance (+100 mL), meaning the client has taken in slightly more fluids than they have excreted. This could be acceptable depending on the client's clinical condition and fluid status.
B. This indicates a negative fluid balance (-500 mL), suggesting the client has excreted more fluids than they have taken in. In some situations, such as in patients with certain conditions like edema, a negative balance might be intended.
C. This indicates a significant negative fluid balance (-1,300 mL), where the client has excreted much more fluid than they have taken in. This could indicate dehydration or fluid loss that needs to be addressed promptly.
D. This indicates a significant positive fluid balance (+2,000 mL), where the client has taken in much more fluid than they have excreted. This could indicate fluid retention, which might be acceptable in certain clinical conditions but could be problematic in others, such as in patients with congestive heart failure.
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