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Combining clinical predictors to better predict for the no-reflow phenomenon

E Avci1, T Yildirim, G Aydin

  • 1Cardiology Department, Balikesir University, Faculty of Medicine, Balikesir, Turkey. dreyupavci@gmail.com.

European Review for Medical and Pharmacological Sciences
|August 3, 2018
PubMed

Insights

Combining the CHA2DS2-VASc score with a pre-percutaneous coronary intervention (PCI) thrombus load score improves detection of the no-reflow phenomenon in ST-elevation myocardial infarction (STEMI) patients undergoing primary PCI. This combined approach offers enhanced sensitivity for identifying no-reflow compared to using either score alone.

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Clinical Research

Background:

  • The no-reflow phenomenon is a complication following primary percutaneous coronary intervention (PPCI) for acute ST-elevation myocardial infarction (STEMI).
  • Predicting no-reflow is crucial for optimizing patient outcomes after PPCI.
  • Existing scoring systems like CHA2DS2-VASc and thrombus load scores have limitations in predicting no-reflow independently.

Purpose of the Study:

  • To evaluate the sensitivity of a combined CHA2DS2-VASc score and pre-PCI thrombus load score in detecting the no-reflow phenomenon.
  • To compare the predictive accuracy of the combined score against the CHA2DS2-VASc score alone and the thrombus load score alone.
  • To assess the added value of the thrombus load score to the CHA2DS2-VASc score in STEMI patients undergoing PPCI.

Main Methods:

  • A cohort of 497 patients with acute STEMI undergoing PPCI were analyzed.
  • Patients were categorized into no-reflow (n=194) and control (n=303) groups based on Thrombolysis In Myocardial Infarction (TIMI) flow grading and Myocardial Blush Grade (MBG).
  • Statistical analysis compared the predictive performance (AUC, net reclassification improvement) of the CHA2DS2-VASc score alone, thrombus load score alone, and their combination.

Main Results:

  • The no-reflow group exhibited significantly higher CHA2DS2-VASc scores and pre-PCI thrombus load scores compared to the control group.
  • The combined score demonstrated superior sensitivity in predicting no-reflow compared to the CHA2DS2-VASc score alone (AUC 0.65 vs. 0.60, p < 0.05).
  • The addition of the pre-PCI thrombus load score to the CHA2DS2-VASc score resulted in significant net reclassification improvement (6.7%, p = 0.047).

Conclusions:

  • The combination of CHA2DS2-VASc score and pre-PCI thrombus load score is more sensitive for detecting the no-reflow phenomenon in STEMI patients undergoing PPCI.
  • This combined scoring system offers improved predictive accuracy for no-reflow compared to using individual scores.
  • Integrating thrombus burden assessment with clinical risk factors enhances the prediction of post-PPCI no-reflow.
Abstract

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