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Massive strontium ferrite ingestion without acute toxicity.

Barbara M Kirrane¹, Lewis S Nelson, Robert S Hoffman

¹New York City Poison Control Center, Department of Emergency Medicine, New York University School of Medicine, New York, NY, USA. bmkirrane@msn.com

Basic & Clinical Pharmacology & Toxicology

|November 2, 2006

Summary

Ingestion of strontium ferrite magnets was documented in a patient without acute toxicity. Strontium absorption occurred, but delayed or chronic effects remain unknown.

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Area of Science:

Toxicology
Materials Science

Background:

Ingestion of strontium ferrite, a component in flexible adhesive magnets, is a previously undocumented event.
This case highlights a novel route of exposure to strontium compounds.

Observation:

A 22-year-old male with schizophrenia ingested pulverized strontium ferrite magnets.
Initial presentation was remarkable except for auditory hallucinations; vital signs, ECG, and labs were normal.
Abdominal radiographs showed diffuse radiopaque material consistent with ingested magnets.

Findings:

The patient underwent whole bowel irrigation with polyethylene glycol electrolyte lavage solution (PEG-ELS).
Initial blood and urine strontium levels were significantly elevated (2900 µg/l and 15,000 µg/l, respectively).
Urine strontium levels decreased to 370 µg/l within one week.

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The patient developed bacteremia secondary to intravenous catheter-site thrombophlebitis, treated with antibiotics.

Implications:

Strontium ferrite ingestion, while not causing acute toxicity in this case, demonstrates significant strontium absorption.
Further research is needed to assess potential delayed or chronic toxicity from strontium ferrite exposure.
This case underscores the importance of considering novel material ingestions in toxicology evaluations.