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Related Experiment Video

Updated: Feb 14, 2026

Ultrasound Based Assessment of Coronary Artery Flow and Coronary Flow Reserve Using the Pressure Overload Model in Mice
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Early repolarization pattern in the coronary slow flow phenomenon.

Murat Sucu1, Berzal Ucaman2, Gökhan Altunbas1

  • 1a Department of Cardiology , Gaziantep University Medical Faculty , Gaziantep , Turkey.

Scandinavian Cardiovascular Journal : SCJ
|February 21, 2018
PubMed
Summary

Coronary slow flow phenomenon (CSFP) is linked to early repolarization patterns (ERP), specifically J-wave and slurring on ECGs. Further research is needed to understand the clinical importance of these associations.

Keywords:
Coronary slow phenomenonECGearly repolarization

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Area of Science:

  • Cardiology
  • Electrophysiology

Background:

  • Coronary slow flow phenomenon (CSFP) is a recognized condition.
  • Early repolarization pattern (ERP) is a known risk factor for ventricular arrhythmias.

Purpose of the Study:

  • To investigate the association between CSFP and ERP characteristics.
  • To determine if specific ECG findings of ERP are more prevalent in patients with CSFP.

Main Methods:

  • Cases with CSFP and controls with normal coronary angiograms were identified.
  • Surface electrocardiograms (ECGs) were analyzed for J-point elevation, notching, and ST segment changes to define ERP.
  • Prevalence of ERP and its specific features were compared between cases and controls.

Main Results:

  • Early repolarization pattern (ERP) was significantly more common in CSFP cases (65%) compared to controls (28%).
  • CSFP cases showed higher rates of J-point elevation in inferior, D1-aVL, and lateral leads.
  • Notching and various ST segment patterns (concave/ascendant, horizontal/non-ascendant) were also significantly more frequent in patients with CSFP.

Conclusions:

  • The study demonstrates a significant association between coronary slow flow phenomenon (CSFP) and specific early repolarization patterns (ERPs), including J-wave and slurring.
  • The clinical implications and prognostic value of these ECG findings in the context of CSFP require further investigation.