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Benzocaine-induced methemoglobinemia during transesophageal echocardiography

Sandra Kaye Birchem1

  • 1Mercy Medical Center-North Iowa, Mason City, IA, USA. sandikayeb@hotmail.com

The Journal of the American Osteopathic Association
|September 17, 2005
PubMed

Insights

Topical benzocaine spray can cause acquired methemoglobinemia, a serious condition, especially in elderly or pediatric patients. Prompt recognition and management are crucial for patient safety.

Area of Science:

  • Anesthesiology
  • Toxicology

Background:

  • Topical anesthetic agents, like benzocaine spray, are commonly used for procedures.
  • Acquired methemoglobinemia is a rare but potentially life-threatening complication associated with these agents.

Observation:

  • A 69-year-old woman developed acquired methemoglobinemia after oral application of benzocaine spray during a transesophageal echocardiography.
  • The patient's weight was 175 lb.

Findings:

  • Benzocaine-induced methemoglobinemia can occur in adults, not just pediatric patients.
  • Successful patient management was achieved.

Implications:

  • Heightened physician awareness of methemoglobinemia risks associated with topical anesthetics is essential.
  • This case underscores the importance of recognizing and managing this adverse event promptly.

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