A gravida 2 para 1 client is hospitalized with severe preeclampsia.
While she receives magnesium sulfate (MgSO4) therapy, the nurse knows it is safe to repeat the dosage if:
A . Deep tendon reflexes are absent
B . Urine output is 20 mL/hr
C . MgSO4serum levels are>15 mg/dL
D . Respirations are>16 breaths/min
Answer: D
Explanation:
(A) MgSO4is a central nervous system depressant. Loss of reflexes is often the first sign of developing toxicity.
(B) Urinary output at <25 mL/hr or 100 mL in 4 hours may result in the accumulation of toxic levels of magnesium.
(C) The therapeutic serum range for MgSO4is 6C8 mg/dL. Higher levels indicate toxicity.
(D) Respirations of>16 breaths/min indicate that toxic levels of magnesium have not been reached. Medication administration would be safe.
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