MEDizzy - A pregnant client is receiving magnesium sulfate for the

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Maternity and Newborn Medications

A pregnant client is receiving magnesium sulfate for the management of preeclampsia. The nurse determines that the client is experiencing toxicity from the medication if which findings are noted on assessment?

ExplanationMagnesium toxicity can occur from magnesium sulfate therapy. Signs of magnesium sulfate toxicity relate to the central nervous system depressant effects of the medication and include respiratory depression, loss of deep tendon reflexes, and a sudden decline in fetal heart rate and maternal heart rate and blood pressure. Respiratory rate below 12 breaths per minute is a sign of toxicity. Urine output should be at least 25 to 30 mL per hour. Proteinuria of 3 + is an expected finding in a client with preeclampsia. Presence of deep tendon reflexes is a normal and expected finding. Therapeutic serum levels of magnesium are 4 to 7.5 mEq/L (2 to 3.75 mmol/L).