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A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis
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Effect of Coronary Collaterals on Prognosis in Patients Undergoing Primary Percutaneous Coronary Intervention for

Kongyong Cui1, Shuzheng Lyu1, Xiantao Song1

  • 11 Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China.

Angiology
|April 17, 2018
PubMed

Insights

Coronary collaterals significantly improve survival rates in patients with ST-segment elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PCI). Good collateral circulation reduces both long-term and short-term mortality after PCI.

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Clinical Outcomes Research

Background:

  • The prognostic significance of coronary collaterals in ST-segment elevation myocardial infarction (STEMI) patients undergoing percutaneous coronary intervention (PCI) is debated.
  • Understanding the role of collateral circulation is crucial for optimizing patient outcomes in acute myocardial infarction.

Purpose of the Study:

  • To conduct a meta-analysis evaluating the impact of coronary collaterals on clinical outcomes, particularly mortality (≥6 months), in STEMI patients treated with primary PCI.
  • To synthesize evidence from observational studies to clarify the benefits of collateral circulation.

Main Methods:

  • Systematic literature search of PubMed, EMBASE, and Cochrane Library databases up to August 9, 2017.
  • Inclusion of 14 observational studies comprising 10,411 patients.
  • Meta-analysis of mortality (long-term and in-hospital plus 30-day) and other clinical outcomes.

Main Results:

  • Coronary collaterals were associated with a reduced risk of long-term mortality (RR: 0.65, 95% CI: 0.55-0.76) and in-hospital plus 30-day mortality (RR: 0.61, 95% CI: 0.47-0.78).
  • Risk-adjusted and propensity-matched data confirmed significant reductions in long-term mortality (RR: 0.68, 95% CI: 0.49-0.95) and short-term mortality (RR: 0.27, 95% CI: 0.13-0.55).
  • No significant differences were observed in recurrent myocardial infarction or target vessel revascularization rates.

Conclusions:

  • Coronary collaterals exert a beneficial effect on long-term survival (≥6 months) and short-term survival (in-hospital plus 30-day) in STEMI patients undergoing primary PCI.
  • The findings support the importance of collateral circulation in improving prognosis after primary PCI for STEMI.

Keywords:
acute ST-elevation myocardial infarctioncardiovascular prognosiscoronary collateralsprimary percutaneous coronary intervention

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