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Imipramine overdose complicated by toxic megacolon
J P Ross1, T R Small, P A Lepage
1Spartanburg Regional Medical Center, South Carolina, USA.
The American Surgeon
|April 1, 1998
Summary
Tricyclic antidepressant overdose is a common cause of medical admission, often leading to fatal cardiovascular toxicity. This case highlights toxic megacolon and perforation as rare but serious complications of imipramine overdose.
Area of Science:
- Pharmacology
- Toxicology
- Gastroenterology
Background:
- Tricyclic antidepressants (TCAs) are widely prescribed for depression.
- TCAs constitute 20-25% of overdose admissions, with cardiovascular toxicity being the primary cause of mortality.
- Anticholinergic effects can lead to various complications, including gastrointestinal issues.
Observation:
- This report details a case of imipramine overdose.
- The patient presented with complications beyond typical anticholinergic effects.
- The overdose led to the development of toxic megacolon.
Findings:
- Toxic megacolon, a severe dilation of the colon, was diagnosed.
- The toxic megacolon was associated with a colonic perforation.
- This represents an unusual and severe complication of tricyclic antidepressant overdose.
Implications:
- This case underscores the potential for severe and uncommon gastrointestinal complications following tricyclic antidepressant overdose.
- Awareness of toxic megacolon and perforation is crucial for managing TCA toxicity.
- Further research into the mechanisms of TCA-induced gastrointestinal complications may be warranted.