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Postconditioning with Lactate-enriched Blood for Cardioprotection in ST-segment Elevation Myocardial Infarction
05:26

Postconditioning with Lactate-enriched Blood for Cardioprotection in ST-segment Elevation Myocardial Infarction

Published on: May 28, 2019

Myocardial perfusion in ST-elevation myocardial infarction treated successfully with primary angioplasty

Pavel Hoffmann1, Sigrun Halvorsen, Knut-Haakon Stensaeth

  • 1Department of Radiology, Ullevål University Hospital, Oslo, Norway.

Scandinavian Cardiovascular Journal : SCJ
|April 13, 2006
PubMed

Insights

Successful angioplasty for ST-elevation myocardial infarction (STEMI) still shows early myocardial perfusion deficits. Poorer early perfusion predicts larger infarct size, highlighting perfusion

Area of Science:

  • Cardiology
  • Medical Imaging
  • Interventional Cardiology

Background:

  • ST-elevation myocardial infarction (STEMI) requires prompt reperfusion therapy.
  • Primary angioplasty is a standard treatment for STEMI to restore epicardial flow.
  • Assessing myocardial perfusion post-intervention is crucial for predicting outcomes.

Purpose of the Study:

  • To investigate myocardial perfusion in STEMI patients after successful primary angioplasty.
  • To determine the predictive value of early myocardial perfusion on subsequent infarct size.

Main Methods:

  • Fifty STEMI patients with restored epicardial flow post-angioplasty were studied.
  • TIMI myocardial perfusion (TMP) grading was assessed post-procedure.
  • Contrast-enhanced MRI, including first-pass perfusion and delayed enhancement, was performed at early and late follow-up.

Main Results:

  • Reduced myocardial perfusion in the infarct zone was observed in all patients, more pronounced in those with lower TMP grades (0-1).
  • Patients with higher TMP grades (2-3) exhibited smaller infarct sizes at three months.
  • Higher ejection fractions were noted in patients with better early perfusion (TMP 2-3) at follow-up.

Conclusions:

  • Early myocardial perfusion deficits persist in STEMI despite successful angioplasty.
  • Impaired early myocardial perfusion is significantly associated with increased infarct size at three months.
  • TMP grading and MRI-based perfusion assessment are valuable for predicting STEMI outcomes.
Abstract

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