The first sign of magnesium toxicity is usually the loss of tendon (patella) reflexes. This occurs with plasma levels > 5 mmoVL, with respiratory depression occurring at levels > 6 mmol/L26. References Akbar, M. I. A., Yoseph, D., -, A., Bachnas, M. A., Dachlan, E. G., Dekker, G. A., & Ernawati. (2020). Magnesium intoxication in women with preeclampsia with severe features treated with magnesium sulfate. Hypertension in Pregnancy, 1-7. da Costa, T. X., Azeredo, F. J., Ururahy, M. A. G., da Silva Filho, M. A., Martins, R. R., & Oliveira, A. G. (2020). Population Pharmacokinetics of Magnesium Sulfate in Preeclampsia and Associated Factors. Drugs in R&D, 20(3), 257-266. A nurse is assessing a client who is receiving magnesium sulfate as tr...
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