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Related Experiment Videos

Is aggressive heparinization necessary for elective PTCA?

J H Frierson1, A P Dimas, C C Simpfendorfer

  • 1Department of Cardiology, Cleveland Clinic Foundation, Ohio 44195.

Catheterization and Cardiovascular Diagnosis
|April 1, 1993
PubMed
Summary
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Routine monitoring of activated clotting time (ACT) is unnecessary during elective percutaneous transluminal coronary angioplasty (PTCA) with standard heparin doses. This study found no link between ACT levels and PTCA complications or thrombus formation.

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Vascular Medicine

Background:

  • The optimal level of heparin anticoagulation for percutaneous transluminal coronary angioplasty (PTCA) remains undetermined.
  • Assessing the relationship between anticoagulation levels and PTCA complications is crucial for patient safety.

Purpose of the Study:

  • To investigate whether percutaneous transluminal coronary angioplasty (PTCA) complications correlate with activated clotting time (ACT) levels.
  • To evaluate the necessity of routine ACT monitoring during elective PTCA procedures.

Main Methods:

  • Prospective measurement of serial activated clotting time (ACT) values in 189 patients undergoing 201 elective PTCA procedures.
  • Standard heparin dosing protocols were administered, with mean pre-inflation dose of 10,100 units and mean procedural dose of 13,200 units.

Related Experiment Videos

  • Analysis of ACT parameters in relation to acute complications and intracoronary thrombus development.

    • Main Results:

    • The mean pre-inflation ACT was 295 seconds, with over 50% of patients having ACT < 300 seconds.
    • No significant relationship was found between any ACT parameter and the occurrence of acute complications.
    • No new intracoronary thrombus was observed in any of the procedures.

    Conclusions:

    • Routine monitoring of activated clotting time (ACT) is not necessary for elective percutaneous transluminal coronary angioplasty (PTCA) when standard heparin doses are employed.
    • Current heparin dosing strategies appear sufficient to prevent complications and thrombus formation during elective PTCA, obviating the need for frequent ACT checks.