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Repeat thrombolysis for acute myocardial infarction.

P Banerjee1, A L Clark, M S Norell

  • 1Department of Cardiology, Castle Hill Hospital, Kingston upon Hull HU16 5JQ, UK. pbanerjee@ukonline.co.uk

International Journal of Cardiology
|July 12, 2005
PubMed
Summary

Repeat thrombolysis for acute myocardial infarction identifies high-risk patients. While safe, these patients require close monitoring and potential early intervention, especially if initial treatment fails.

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Area of Science:

  • Cardiology
  • Emergency Medicine
  • Clinical Research

Background:

  • Thrombolysis is the primary treatment for acute myocardial infarction (AMI) in the UK.
  • A significant number of AMI patients experience treatment failure or early re-infarction with initial thrombolysis.
  • Optimal management for these patients remains unclear, with repeat thrombolysis often administered in non-interventional facilities.

Purpose of the Study:

  • To evaluate the outcomes of repeat thrombolysis in AMI patients with failed initial treatment or early re-infarction.
  • To compare the safety and efficacy of single versus multiple thrombolytic doses.

Main Methods:

  • Retrospective analysis of 92 patients receiving two or more thrombolysis doses versus 98 patients receiving a single dose for AMI.
  • Case note review to assess outcomes including death, heart failure, and need for revascularization.

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Main Results:

  • The repeat thrombolysis group showed significantly higher 30-day mortality (p=0.0016).
  • Increased incidence of heart failure with lower ejection fraction and cardiac arrests observed in the rethrombolysed group.
  • Hemorrhage rates were similar between groups; however, repeat thrombolysis led to more coronary angiography and percutaneous coronary interventions (PCIs).

Conclusions:

  • Repeat thrombolysis identifies AMI patients at high risk for early complications.
  • While repeat thrombolysis is safe, close monitoring and early intervention are crucial.
  • Early referral to tertiary centers is recommended for patients in district general hospitals without interventional facilities.