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Indian Journal of Critical Care Medicine : Peer-reviewed, Official Publication of Indian Society of Critical Care Medicine logoLink to Indian Journal of Critical Care Medicine : Peer-reviewed, Official Publication of Indian Society of Critical Care Medicine
. 2025 May 31;29(Suppl 1):S251. doi: 10.5005/jaypee-journals-10071-24933.191

Role of Prophylactic Magnesium Supplementation in ICU Patients in Avoiding Other Dyselectrolytemias and their Complications

Savitha Appana 1, Shweta Ram Chandankhede 2, GPVN Srinivas 3
PMCID: PMC12168539

Abstract

Aim and Objectives

  • To study the role of prophylactic magnesium supplementation in avoiding other dyselectrolytemias and their complications.

  • Primary Objective: To study if there is a possibility to avoid other electrolyte disturbances like hypokalemia, hypocalcemia, hypophosphatemia by supplementing enteral magnesium to the patients.

Materials and methods

A Prospective observational study was carried out in 30 patients admitted in ICU based on the following inclusion and exclusion criteria.

Inclusion Criteria

  • Age: 18 to 65 years

  • Either gender

  • ICU stay of atleast 5 days.

Exclusion Criteria

  • Patients with Renal dysfunction.

  • Patients with history of cardiac arrhythmias or rhythm abnormalities at the time of admission.

  • Patients with already existing electrolyte disturbance for which corrections were started.

Methodology

  • All the patients satisfying the inclusion and exclusion criteria were supplemented with Enteral magnesium (oral/ryles tube) of 400 mg twice daily on the first 2 days and once daily on the next 3 days.

  • Serum potassium, phosphorous, calcium levels were measured daily for the next 4 days.

  • Serum magnesium was measured on the day 5 of ICU stay to rule out any iatrogenic hypermagnesemia.

Results

  • 21 patients had normal electrolytes during the next 4 days of hospital stay.

  • 7 patients had mild hypokalemia on day 2 for which oral supplementation was added.

  • 2 patients required parenteral potassium and phosphorous supplementation one day followed by enteral supplementation for 2 days.

  • Significant hypocalcemia was not observed in any of the cases.

  • No ECG rhythm abnormalities were found in any of the patients.

  • Neither of the patients had hypermagnesemia on day-5.

Conclusion

  • Prophylactic supplementation of magnesium can help in reducing the incidence of other dyselectrolytemias in ICU patients thus reducing the requirement of those electrolyte supplementation which require close monitoring.

  • It can help in avoiding the complications secondary to these dyselectrolytemias.

  • However, randomized controlled trials in a larger sample size need to be carried out where the results can be compared with the control group thus giving a statistically significant result which can help in clinical application for a better patient outcome.

  • Our study can help in forming the basis for carrying out further studies.


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