• Thorac Cardiovasc Surg · Aug 2003

    Urgent or emergent coronary revascularization using bilateral internal thoracic artery after previous clopidogrel antiplatelet therapy.

    • B Gansera, F Schmidtler, K Spiliopoulos, I Angelis, P Neumaier-Prauser, and B M Kemkes.
    • Department of Cardiovascular Surgery, Klinikum Bogenhausen, Munich, Germany. herzchirurgie@kh-bogenhausen.de
    • Thorac Cardiovasc Surg. 2003 Aug 1; 51 (4): 185-9.

    BackgroundClopidogrel application before diagnostic or therapeutical percutaneous coronary intervention has become the standard for stent thrombosis prevention. Irreversible platelet inhibition causes increasing bleeding complications if urgent coronary artery bypass grafting is necessary. This study evaluates the effect on bleeding complications of clopidogrel in urgent CABG using bilateral internal thoracic artery (ITA) and saphenous veins in all patients.MethodsWe retrospectively analyzed 128 patients (operated between January 2000 and September 2002) undergoing urgent or emergent CABG using both ITAs, and compared 64 patients with previous clopidogrel and aspirin application (within 5 days) to 64 patients without clopidogrel. We evaluated chest tube output, re-exploration rate and necessity of blood products, ventilation time and ICU stay.ResultsBoth groups were comparable in age, gender, number of performed anastomoses (mean 4/patient). Chest tube output (24 h) was higher in the clopidogrel group at 977+/-628 ml vs. 788+/-389 ml (p=0.046), as was re-exploration rate with 7.81% (5 of 64) vs. 0% (0 of 64) (p<0.005). The number of blood products amounted to 2.7+/-1.9 U in the clopidogrel group vs. 1.9+/-1.6 U (p=0.013) for red cells, 0.05+/-0.9 U vs. 0.03+/-0.25 (p=0.0003) for platelets, and 0.5+/-1.3 U vs. 0.2+/-1.0 U (p=0.14) for fresh frozen plasma. Mechanical ventilation time was 11.9+/-9.7 h vs. 9.6+/-5.9 h (p=0.10), ICU stay 32.6+/-22.1 h vs. 27.8+/-18.2 h (p=0.19).ConclusionsPrevious application of clopidogrel in combination with aspirin before urgent CABG induces increased chest tube output, re-exploration rate and necessity of blood products, especially platelets. Nevertheless, routine use of both ITAs in patients after clopidogrel exposure can be performed with acceptable bleeding complications.

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