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Related Experiment Videos

Platelet function changes as monitored by cone and plate(let) analyzer during beating heart surgery.

Rabin Gerrah1, Eitan Snir, Alex Brill

  • 1Department of Cardiothoracic Surgery, Assuta Medical Center, Petah Tikva, Israel. rabin@assuta.com

The Heart Surgery Forum
|July 21, 2004
PubMed
Summary

Off-pump coronary artery bypass surgery increases platelet function, potentially causing a thrombogenic state. Preoperative platelet function is a key predictor of postoperative bleeding.

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Area of Science:

  • Cardiovascular Surgery
  • Hematology
  • Hemostasis

Background:

  • Off-pump coronary artery bypass (OPCAB) surgery aims to reduce complications associated with cardiopulmonary bypass (CPB).
  • Previous studies suggest CPB induces a hypercoagulable state, but the impact of eliminating CPB on platelet function is unclear.

Purpose of the Study:

  • To investigate changes in platelet function following OPCAB surgery.
  • To determine if eliminating CPB affects platelet aggregation and adhesion.

Main Methods:

  • Platelet function assessed using the cone and plate(let) analyzer (CPA) method.
  • Measured average size (AS) and surface coverage (SC) of platelet aggregates.
  • Correlated postoperative bleeding with preoperative and intraoperative platelet function parameters.

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Main Results:

  • Platelet function, indicated by increased AS and SC, was significantly higher post-OPCAB compared to pre-OPCAB.
  • Preoperative AS and SC were significantly correlated with postoperative bleeding volume.
  • No significant difference in platelet function was observed due to CPB elimination.

Conclusions:

  • OPCAB surgery leads to enhanced platelet function, contributing to a thrombogenic state.
  • Preoperative platelet function assessed by CPA is an independent risk factor for postoperative bleeding after OPCAB.
  • The absence of CPB-induced platelet injury may shift the hemostatic balance towards thrombogenicity.