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[Early and postponed percutaneous coronary interventions in acute period of myocardial infarction]

G A Gazarian, I V Zakharov, A P Golikov

    Kardiologiia
    |November 29, 2011
    PubMed

    Insights

    Postponed percutaneous coronary interventions (PCI) are effective for acute myocardial infarction (MI) patients with elevated risk, reducing complications and mortality. Early reperfusion therapy, whether primary or delayed PCI, significantly improves outcomes.

    Area of Science:

    • Cardiology
    • Interventional Cardiology
    • Acute Myocardial Infarction Management

    Background:

    • Optimal timing for percutaneous coronary interventions (PCI) in acute myocardial infarction (MI) without prior thrombolysis remains a key clinical question.
    • Identifying high-risk patients who benefit from reperfusion therapy beyond the initial 12-hour window is crucial for improving outcomes.

    Purpose of the Study:

    • To establish indications for applying postponed percutaneous coronary interventions (PCI) during the acute phase of myocardial infarction (MI) in patients not receiving initial thrombolytic therapy.
    • To compare the efficacy of primary PCI, postponed PCI, and conservative management in a large cohort of acute MI patients.

    Main Methods:

    • A comparative assessment of three treatment strategies was conducted on 810 acute MI patients admitted between 2003 and 2007.
    • Strategies included: primary PCI within 12 hours, postponed PCI in the acute period for elevated risk, and conservative treatment without reperfusion.
    • Indications for postponed PCI were based on elevated risk of death (TIMI score), with right ventricular involvement and repeat MI as additional predictors.

    Main Results:

    • Elevated risk of death effectively identified patients with persistent occlusions and subtotal stenoses in the infarct-related artery.
    • Both primary PCI within 12 hours and postponed PCI in the acute period significantly lowered complication and mortality rates compared to conservative management.
    • Reperfusion therapy, regardless of timing within the acute phase, was identified as the primary component for managing these high-risk patients.

    Conclusions:

    • Postponed PCI in the acute period of MI is a viable and effective strategy for high-risk patients, offering outcomes comparable to primary PCI.
    • Early reperfusion therapy, whether immediate or delayed, is critical for preventing unfavorable outcomes in acute MI.
    • The success of postponed interventions supports their broader application, even for patients initially treated at other institutions.

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