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Author Question: A patient has been diagnosed with digitalis-induced dysrhythmia. The patient is administered ... (Read 23 times)

NguyenJ

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on: Jul 23, 2018
A patient has been diagnosed with digitalis-induced dysrhythmia. The patient is administered magnesium sulfate IV to resolve a low potassium level. What effect does hypomagnesemia have?
 
  A) Decreased QRS complex
  B) Increased stroke volume
  C) Myocardial irritability
  D) Elevated ST segment

Question 2

A patient receiving isoniazid (INH) and rifampin (Rifadin) has a decreased urinary output and decreased sensation in his great toes. Which laboratory values should be assessed?
 
  A) Hematocrit and hemoglobin
  B) ALT and AST
  C) Urine culture and sensitivity
  D) Erythrocyte count and differential


bubulittle310@msn.cn

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Reply #1 on: Jul 23, 2018
Answer to Question 1

C
Feedback:
Hypomagnesemia increases myocardial irritability. Magnesium deficit prolongs the QRS complex instead of decreasing the QRS complex. Hypomagnesemia does not increase stroke volume. Hypomagnesemia will depress the ST segment, not elevate the ST segment.

Answer to Question 2

B
Feedback:
Hepatotoxicity and peripheral neuropathy are important adverse effects of isoniazid and rifampin. The ALT/AST will assess liver function. The hematocrit and hemoglobin are not indicated with the described symptoms. Erythrocyte count and differential are not indicated with these symptoms.


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NguyenJ

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Reply #2 on: Jul 23, 2018
TY


bubulittle310@msn.cn

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Reply #3 on: Jul 23, 2018
You're welcome


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