Discharge Instructions for Hypomagnesemia (Child)
Your child has too little magnesium in the blood, a condition called hypomagnesemia. Magnesium is a component of bone. It’s needed for muscles, nerves, and enzymes to do their jobs. Magnesium is also needed for many hormones to work. When your child’s magnesium levels are low, their calcium levels may be low too. Too little magnesium in the blood can lead to many symptoms and serious problems. These include seizures, abnormal heart rhythms, and trouble breathing. If severe enough, the heart can stop beating altogether. Your child may have been given treatment for the condition in the hospital. Here’s what you need to know about caring for your child at home.
Home care
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Give your child a magnesium supplement, or give a multivitamin with magnesium in it. Do this as directed by your child’s doctor.
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Have your child’s magnesium levels checked often, as directed by your child's doctor. This is very important if your child is taking a diuretic. This is a medicine that keeps the body from retaining water.
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Tell the doctor about all prescription and over-the-counter medicines your child takes. Some of them can decrease magnesium levels.
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Give your child all medicines exactly as directed.
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Learn to take your child’s pulse. Tell the doctor if your child’s pulse rate is higher than 120 beats per minute.
Follow up
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Follow up with your doctor as advised.
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Keep all follow-up appointments. Your child’s doctor needs to watch your child’s condition closely. This is even more important if another health problem is causing the hypomagnesemia.
When to contact your child’s doctor
Contact the doctor right away if your child has:
Call 911
Call 911 if your child has:
Online Medical Reviewer:
Chelsey Schilling BSN RN
Online Medical Reviewer:
Heather M Trevino BSN RNC
Date Last Reviewed:
6/1/2025
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