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A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis
18:11

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Published on: December 28, 2012

Acute myocardial infarction as a complication of clonidine withdrawal

John Simic1, Stephen Kishineff, Richard Goldberg

  • 1Providence Saint Joseph Medical Center, Burbank, California 90033, USA.

The Journal of Emergency Medicine
|December 5, 2003
PubMed

Insights

Abruptly stopping clonidine can cause severe hypertension and, rarely, myocardial infarction. This case highlights the risk in elderly patients, even with low doses, emphasizing careful withdrawal protocols.

Area of Science:

  • Cardiology
  • Pharmacology
  • Internal Medicine

Background:

  • Clonidine withdrawal is a known cause of hyperadrenergic symptoms.
  • Acute myocardial infarction (MI) is an exceptionally rare complication of clonidine cessation.

Observation:

  • An 86-year-old woman experienced severe hypertension and MI 36 hours after discontinuing clonidine (0.4 mg/day).
  • Symptoms resolved with labetalol and diazepam treatment.

Findings:

  • Cardiac catheterization revealed no coronary occlusion.
  • The myocardial infarction was attributed to excessive myocardial oxygen demand.

Implications:

  • This case underscores the potential for serious cardiovascular events, including MI, following abrupt clonidine withdrawal.
  • It highlights the importance of cautious medication titration and patient monitoring, especially in elderly individuals.
  • Clinicians should consider increased myocardial oxygen demand as a mechanism for MI in clonidine withdrawal syndrome.

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