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Updated: Jun 21, 2026

Interventional Diagnostic Procedure: A Practical Guide for the Assessment of Coronary Vascular Function

Interventional Diagnostic Procedure: A Practical Guide for the Assessment of Coronary Vascular Function

Published on: March 15, 2022

Aspirin resistance after CABG.

S Sanioglu¹, S Tetik, O Sokullu

¹Department of Cardiovascular Surgery, Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Training and Research Hospital, Haydarpasa, 34420 Istanbul, Turkey. sanioglu@gmail.com

The Thoracic and Cardiovascular Surgeon

|July 25, 2009

Summary

Post-coronary artery bypass grafting (CABG) surgery, aspirin resistance affects most patients. This study found no clear cause for this resistance, highlighting the need for further research into aspirin response after CABG.

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Last Updated: Jun 21, 2026

Interventional Diagnostic Procedure: A Practical Guide for the Assessment of Coronary Vascular Function

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Published on: March 15, 2022

Surgical Porcine Model of Chronic Myocardial Ischemia Treated by Exosome-laden Collagen Patch and Off-pump Coronary Artery Bypass Graft

Surgical Porcine Model of Chronic Myocardial Ischemia Treated by Exosome-laden Collagen Patch and Off-pump Coronary Artery Bypass Graft

Published on: September 15, 2023

Area of Science:

Cardiology
Vascular Surgery
Pharmacology

Background:

Temporary aspirin resistance is a known complication following coronary artery bypass grafting (CABG).
Identifying factors contributing to aspirin resistance could help reduce early graft occlusions.

Purpose of the Study:

To investigate the incidence of aspirin resistance in the early postoperative period after CABG.
To explore potential clinical and laboratory factors associated with aspirin resistance in this patient group.

Main Methods:

A study of 25 patients undergoing elective CABG.
Monitoring of platelet count, mean platelet volume, C-reactive protein, lipid profile, BUN, and creatinine preoperatively and postoperatively.
Assessment of aspirin response using optical aggregometry.

Main Results:

Aspirin resistance was observed in 60% of patients post-CABG.
No significant differences were found in preoperative or operative data between aspirin-resistant and non-resistant groups.
Postoperative changes in platelet counts and C-reactive protein levels were similar in both groups.

Conclusions:

Aspirin resistance is prevalent in the early postoperative phase for the majority of CABG patients.
The studied factors did not prove causative for aspirin resistance.
Further research is necessary to elucidate the mechanisms behind aspirin resistance in the post-CABG setting.