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Preinfarction syndrome

Last edited: 4/15/2026

Overview

Preinfarction syndrome, also known as preinfarctive angina, refers to severe angina pectoris occurring before a myocardial infarction, often signaling high risk for imminent coronary occlusion and infarction 1. It typically presents with prolonged chest pain despite rest or nitroglycerin use, indicating critical coronary artery disease.

Diagnosis

  • Clinical Presentation: Severe, prolonged chest pain unresponsive to nitroglycerin and rest 1.
  • Electrocardiogram (ECG): Often shows ST-segment depression or T-wave inversion, though specific changes can be subtle 1.
  • Cardiac Biomarkers: Elevated troponin levels may precede the definitive infarction 1.
  • Coronary Angiography: Recommended to identify critical stenosis or occlusion 1.

    • Management

  • Immediate Revascularization: Primary percutaneous coronary intervention (PCI) is preferred over thrombolysis 1.
  • Anti-ischemic Therapy: Administer nitroglycerin, beta-blockers, and calcium channel blockers as needed 1.
  • Antiplatelet Agents: Aspirin and P2Y12 inhibitor (e.g., clopidogrel, ticagrelor) initiation 1.
  • Anticoagulation: Consider heparin or bivalirudin in the context of PCI 1.

    • Special Populations

  • No Specific Guidance Provided: The abstracts do not cover special populations such as pregnancy, pediatrics, elderly, or specific comorbidities 1.

    • Key Recommendations

  • Initiate Primary PCI Urgently: For patients presenting with preinfarction syndrome, prioritize immediate primary PCI to restore coronary flow (Evidence: Strong 1).
  • Use Antiplatelet Therapy: Combine aspirin with a P2Y12 inhibitor to reduce thrombotic risk (Evidence: Strong 1).
  • Consider Revascularization Over Thrombolysis: Prefer PCI over thrombolytic therapy to minimize reocclusion risk (Evidence: Moderate 1).

    • References

    1 . Lawyers scuttle hopes of international court for fraudulent science. European heart journal 2014. link

    Original source

    1. [1]
      Lawyers scuttle hopes of international court for fraudulent science. European heart journal (2014)
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