Acute myocardial infarction and heart block: a challenge to emergency physicians

Marcelo Rodrigues Bacci1, Janaina Aparecida Boide Santos, Leonardo Fernando Ferrari Nogueira

  • 1Department of General Practice, Faculdade de Medicina do ABC, Santo André, Brazil. mrbacci@yahoo.com

BMJ Case Reports
|January 29, 2013
PubMed

Insights

This case highlights a rare complication of thrombolytic therapy during acute ST-elevation myocardial infarction, where temporary total heart block occurred. Prompt emergency physician decisions are crucial for managing such critical cardiac events.

Area of Science:

  • Cardiology
  • Emergency Medicine
  • Clinical Case Reports

Background:

  • Acute ST-elevation myocardial infarction (STEMI) requires timely reperfusion therapy.
  • Thrombolytic therapy is a common treatment for STEMI, aiming to restore blood flow.
  • Heart block is a potential complication, particularly in inferior wall myocardial infarction.

Observation:

  • A patient presenting with inferior wall STEMI experienced transitory total heart block within hours of symptom onset.
  • Hemodynamic stability was maintained prior to thrombolytic therapy administered 8 hours post-pain onset.
  • No recurrence of heart block was observed after the initial event.

Findings:

  • The case illustrates a potential complication associated with thrombolytic therapy in STEMI.
  • The occurrence of heart block was transient and resolved without intervention.
  • Successful thrombolytic therapy often correlates with the reversion of associated arrhythmias.

Implications:

  • This case underscores the importance of rapid clinical assessment and decision-making by emergency physicians during STEMI treatment.
  • Consideration for pacemaker implantation is advised if hemodynamic compromise develops post-thrombolysis.
  • Recognizing and managing transient heart block is vital for optimizing patient outcomes in STEMI.

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