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 D
Explanation
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.
Correct Answer is A
Explanation
A. Infiltration occurs when IV fluid or medication leaks into the surrounding tissues rather than entering the vein. Coolness, blanching (pale appearance), swelling, and discomfort at the IV site are common signs of infiltration.
B. Local inflammation at the IV site can occur due to irritation or infection. Redness, warmth, swelling, tenderness, and possibly purulent drainage (pus) are typical signs. The description of a cool and blanched IV site does not fit the typical signs of inflammation, which usually involve warmth and redness.
C. Thrombophlebitis is inflammation of a vein with associated blood clot formation. Pain, warmth, redness, and swelling along the path of the vein are common. Thrombophlebitis typically presents with warmth and redness at the site, whereas the cool and blanched appearance described by the student suggests fluid infiltration rather than a thrombus causing inflammation.
D. Phlebitis is inflammation of the vein itself. Pain, redness, warmth, and swelling directly over the vein. Phlebitis usually manifests with warmth and redness, which are not present in the described symptoms.
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