NCLEX RN Practice Questions Free Related

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In evaluating the effectiveness of magnesium sulfate (MgSO4), which of the following might indicate that the client was developing MgSO4 toxicity?

  • A. A 3+ patellar tendon reflex
  • B. Respirations of 12 breaths/min
  • C. Urine output of 40 mL/hr
  • D. A 2+ proteinuria value
Correct Answer: B

Rationale: MgSO4 is a central nervous system (CNS) depressant. It also relaxes smooth muscle. If the respiratory rate is <16 bpm magnesium toxicity may be developing.