Magnesium in the Body
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Questions and Answers

What is the most severe consequence of hypermagnesemia levels greater than 12 mg/dL?

  • Decreased respiratory rate
  • Hypotension
  • Cardiac arrest and death (correct)
  • Muscle flaccid paralysis
  • Which of the following tests is NOT recommended for diagnosing hypermagnesemia?

  • Serum blood magnesium test
  • Chest X-ray (correct)
  • Urinary output monitoring
  • Basic metabolic panel (BMP) or comprehensive metabolic panel (CMP)
  • What is the primary effect of high magnesium levels (10 mEq/L or greater) on the neuromuscular system?

  • Muscle weakness and loss of deep tendon reflexes (correct)
  • Paralysis of the diaphragm
  • Increased deep tendon reflexes
  • Muscle spasms
  • What is the first step in treating a client with mild hypermagnesemia?

    <p>Eliminate intake of magnesium through sources such as supplements, laxatives, or antacids</p> Signup and view all the answers

    Which electrolyte disturbance may occur if a client with hypermagnesemia is receiving IV diuretics?

    <p>Hyponatremia</p> Signup and view all the answers

    What is the purpose of cardiac monitoring for a client receiving treatment for severe hypermagnesemia?

    <p>To detect any changes in the client's heart rhythm due to the hypermagnesemia</p> Signup and view all the answers

    Which of the following is a common symptom of hypermagnesemia that may be present?

    <p>Flushing</p> Signup and view all the answers

    Why is it important to perform repeat laboratory tests after treating a client for severe hypermagnesemia?

    <p>Both a and b</p> Signup and view all the answers

    What is the primary role of magnesium in the body?

    <p>To regulate nerve and muscle function</p> Signup and view all the answers

    Where is the majority of the body's magnesium stored?

    <p>In the bones</p> Signup and view all the answers

    How can magnesium be obtained in the diet?

    <p>Both A and B</p> Signup and view all the answers

    What is the recommended daily allowance (RDA) for magnesium intake for adult males?

    <p>400 to 420 mg/day</p> Signup and view all the answers

    What is considered a hypomagnesemic level of magnesium in the body?

    <p>Less than 1.3 mEq/L</p> Signup and view all the answers

    How is magnesium eliminated from the body?

    <p>Through urine and feces</p> Signup and view all the answers

    Which condition is NOT a potential cause of hypomagnesemia?

    <p>Hyperkalemia</p> Signup and view all the answers

    Which medication class is mentioned as potentially leading to magnesium loss?

    <p>Diuretics</p> Signup and view all the answers

    At what approximate magnesium level do clinical signs of hypomagnesemia typically begin to occur?

    <p>&lt; 1.2 mg/dL</p> Signup and view all the answers

    Which food mentioned in the text is NOT a good source of magnesium?

    <p>Broccoli</p> Signup and view all the answers

    Which statement about hypermagnesemia is TRUE?

    <p>Kidney disease is the most common cause.</p> Signup and view all the answers

    Which neurological symptom may occur with severely elevated magnesium levels?

    <p>Blurred vision</p> Signup and view all the answers

    What is the most severe consequence of hypermagnesemia levels greater than 12 mg/dL?

    <p>Cardiac arrest and death</p> Signup and view all the answers

    Which statement about hypermagnesemia is TRUE?

    <p>Hypermagnesemia can be treated by decreasing magnesium intake and promoting urination.</p> Signup and view all the answers

    Which neurological symptom may occur with severely elevated magnesium levels?

    <p>Decreased deep tendon reflexes</p> Signup and view all the answers

    What is the primary effect of high magnesium levels (10 mEq/L or greater) on the neuromuscular system?

    <p>Decreased deep tendon reflexes and muscle weakness</p> Signup and view all the answers

    Which of the following is a common symptom of hypermagnesemia that may be present?

    <p>Constipation</p> Signup and view all the answers

    Which of the following tests is NOT recommended for diagnosing hypermagnesemia?

    <p>Liver function test</p> Signup and view all the answers

    Why is it important to perform repeat laboratory tests after treating a client for severe hypermagnesemia?

    <p>All of the above</p> Signup and view all the answers

    Which medication class is mentioned as potentially leading to magnesium loss?

    <p>Diuretics</p> Signup and view all the answers

    What is the first step in treating a client with mild hypermagnesemia?

    <p>Eliminate intake of magnesium sources</p> Signup and view all the answers

    Which of the following is NOT a potential cause of hypomagnesemia?

    <p>Hypermagnesemia</p> Signup and view all the answers

    What is the expected reference range for magnesium levels in the body?

    <p>1.3 to 2.1 mEq/L</p> Signup and view all the answers

    What percentage of the body's store of magnesium is typically found in the bones?

    <p>50% to 60%</p> Signup and view all the answers

    Which of the following is NOT a common method of magnesium intake as mentioned in the text?

    <p>Magnesium-rich water</p> Signup and view all the answers

    What is the RDA for daily intake of magnesium for adult women?

    <p>310 to 320 mg/day</p> Signup and view all the answers

    Which electrolyte disturbance occurs when magnesium levels fall below 1.3 mEq/L?

    <p>Hypomagnesemia</p> Signup and view all the answers

    In what range do critical values for magnesium levels fall as mentioned in the text?

    <p>&lt; 0.5 mEq/L or &gt; 3 mEq/L</p> Signup and view all the answers

    Which of the following is NOT a potential cause of hypomagnesemia mentioned in the text?

    <p>Dehydration</p> Signup and view all the answers

    What is the recommended treatment for a client experiencing moderate manifestations of hypomagnesemia?

    <p>Oral magnesium replacement</p> Signup and view all the answers

    Which of the following is a potential side effect of intravenous administration of magnesium?

    <p>Flushing and sweating</p> Signup and view all the answers

    What is the most common cause of hypermagnesemia?

    <p>Acute or chronic kidney disease</p> Signup and view all the answers

    At what approximate magnesium level do clinical signs of hypermagnesemia typically begin to occur?

    <p>Above 7 mg/dL</p> Signup and view all the answers

    Which of the following is a potential consequence of untreated severe hypermagnesemia (levels greater than 12 mg/dL)?

    <p>All of the above</p> Signup and view all the answers

    Which of the following foods is NOT a good source of dietary magnesium according to the text?

    <p>Tomatoes</p> Signup and view all the answers

    Which of the following medications is NOT mentioned in the text as potentially leading to magnesium loss?

    <p>Antidepressants</p> Signup and view all the answers

    What is the purpose of performing an ECG in a client with suspected hypermagnesemia?

    <p>To monitor for cardiac dysrhythmias</p> Signup and view all the answers

    Which of the following is a recommended approach for managing a client with severe hypermagnesemia?

    <p>Monitoring for and correcting any concurrent electrolyte imbalances</p> Signup and view all the answers

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