A nurse is assessing a client with severe pre-eclampsia who is receiving magnesium sulfate infusion.
Which finding should alert the nurse to suspect magnesium toxicity?
Respiratory rate of 10 breaths/min
Deep tendon reflexes of 2+
Urine output of 40 mL/hour
Serum magnesium level of 6 mq/L
The Correct Answer is A
Respiratory rate of 10 breaths/min.
This is a sign of magnesium toxicity, which can occur when a client receives magnesium sulfate infusion for severe pre-eclampsia. Magnesium toxicity can cause muscle weakness, difficulty breathing, irregular heartbeats, and cardiac arrest.
Choice B is wrong because deep tendon reflexes of 2+ are normal and do not indicate magnesium toxicity.
Choice C is wrong because urine output of 40 mL/hour is adequate and does not indicate magnesium toxicity.
The minimum urine output for an adult is 30 mL/hour.
Choice D is wrong because serum magnesium level of 6 mEq/L is within the normal range of 1.7 to 2.3 mEq/L and does not indicate magnesium toxicity. Magnesium levels above 2.6 mEq/L can indicate hypermagnesemia.
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Related Questions
Correct Answer is A
Explanation
Respiratory rate 10/min.This indicatesmuscle weaknessanddifficulty breathing, which are symptoms ofmagnesium toxicity.Magnesium sulfate is a medication that can cause magnesium overdose if given in excess or if the patient has impaired kidney function.
Choice B.Urine output 40 mL/hr is wrong because this is within the normal range for urine output, which is 30 to 50 mL/hr.Urine output may decrease in severe cases of magnesium toxicity due to urine retention.
Choice C. Patellar reflex 2+ is wrong because this is a normal finding for the knee-jerk reflex.A low or absent patellar reflex may indicate magnesium toxicity, as it reflectsmuscle weaknessandnerve dysfunction.
Choice D.Serum magnesium level 4.5 mEq/L is wrong because this is within the normal range for serum magnesium, which is 1.7 to 2.3 mEq/L.Serum magnesium levels above 2.6 mEq/L can indicate hypermagnesemia or magnesium overdose.
Correct Answer is A
Explanation
Respiratory rate of 10 breaths/min.
This is a sign ofmagnesium toxicity, which can occur when a client receives magnesium sulfate infusion for severe pre-eclampsia.Magnesium toxicity can causemuscle weakness,difficulty breathing,irregular heartbeats, andcardiac arrest.
Choice B is wrong because deep tendon reflexes of 2+ are normal and do not indicate magnesium toxicity.
Choice C is wrong because urine output of 40 mL/hour is adequate and does not indicate magnesium toxicity.
The minimum urine output for an adult is 30 mL/hour.
Choice D is wrong because serum magnesium level of 6 mEq/L is within the normal range of 1.7 to 2.3 mEq/L and does not indicate magnesium toxicity.Magnesium levels above 2.6 mEq/L can indicate hypermagnesemia.
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