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Related Concept Videos

Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

26
Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
26

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Related Experiment Video

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Evaluation of Coronary Flow Reserve After Myocardial Ischemia Reperfusion in Rats
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Angiography-Based Blood Flow Quantification After Revascularization in Acute Coronary Syndromes.

Koshiro Sakai1,2, Takuya Mizukami1,3,4, Hirofumi Ohashi5

  • 1Cardiovascular Center Aalst OLV Clinic Aalst Belgium.

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|June 27, 2025
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Summary

Impaired coronary blood flow (CBF) after percutaneous coronary intervention (PCI) in acute coronary syndromes (ACS) patients increases mortality risk. Angiography-based CBF quantification can identify high-risk patients for tailored management.

Keywords:
acute coronary syndromeangiographycoronary blood flowcoronary flow velocityheart failure

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Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Medical Imaging

Background:

  • Impaired coronary blood flow (CBF) post-percutaneous coronary intervention (PCI) is a significant predictor of mortality in acute coronary syndromes (ACS).
  • A novel angiography-based method using automatic contrast bolus tracking was developed for CBF quantification.
  • This study investigated the clinical impact of this angiography-derived CBF measurement on major adverse cardiovascular events (MACE) in ACS patients post-PCI.

Purpose of the Study:

  • To assess the association between post-PCI CBF, quantified via angiography, and the occurrence of MACE in patients with ACS.
  • To determine if angiography-based CBF measurement can serve as a prognostic tool for risk stratification in ACS patients undergoing PCI.

Main Methods:

  • A prospective, multicenter, nested case-control study was conducted.
  • Patients presenting with ACS were included, and propensity scores were used to match cases with and without MACE at 1-year follow-up.
  • Coronary blood flow (CBF) was automatically measured from angiograms acquired after PCI.

Main Results:

  • The study included 162 patients (mean age 68.3 years, 83% male, 33% diabetes).
  • Lower post-PCI CBF was observed in ST-segment-elevation myocardial infarction (STEMI) patients compared to other ACS presentations (74.1 mL/min vs. 89.1-95.7 mL/min, P=0.046).
  • Patients with low post-PCI CBF (<54.3 mL/min) exhibited a significantly increased risk of MACE (HR 2.11, P=0.001).

Conclusions:

  • Automatic quantification of CBF using angiography after PCI is significantly associated with MACE in ACS patients.
  • Post-PCI CBF measurement derived from angiography holds potential for risk stratification.
  • This approach may facilitate personalized management strategies for ACS patients.