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Abstract:

Choice of treatment strategy in patients with recurrent angina after coronary artery bypass graft surgery (CABG) is still an actual question. Repeat CABG is associated with an increased risk of mortality and large cardiovascular events, so percutaneous coronary intervention (PCI) is the main strategy in these patients. Criteria for choosing between the bypass and the native vessel stenting are not fully understood, as well as not resolved the question of the differentiated approach to the choice of defeat for stenting

Aim: was to compare long-term results of stenting of bypass and native coronary arteries in patients with recurrent angina after CABG using the algorithm proposed in the study.

Materials and methods: study was conducted in 2010-2014 years. in «3rd Central Military Clinical Hospital named after A.A.Vishnevsky of Ministry of Military Defence». A total of 168 patients with the defeat of coronary bypass graft were operated: revascularization of the native vessel - 80 patients, stenting of coronary bypass graft was performed in 88 patients.

Treatment groups were comparable in all major clinical characteristics of patients, as well as on the number of affected arteries, the total number of bypasses, the number of working bypasses, and diffuse lesion of the native channel.

The degree of stenosis of the native vessel was significantly higher in the second group, and the degree of stenosis of bypasses was significantly higher in the first group. Diffuse lesions of coronary bypasses were significantly more frequent in the first group.

Long-term results of the study were followed up in patients in the observation period of 3 to 36 months (mean follow-up was 21(14-27) months). The average duration was not significantly different between treatment groups.

Results: the incidence of myocardial infarction was comparable between groups. In group of coronary bypass graft stenting, revascularization procedures frequency was higher than in the native vessel revascularization (20,45% and 16,25%, respectively, p = 0,0045), and also had a higher incidence of target lesion revascularization (11.36% and 6.25%, respectively, p = 0,0045).

The cumulative rate of major cardiovascular events did not differ significantly, but there was a certain tendency toward a lower incidence of major cardiovascular events in the group of revascularization of the native vessel. 

 

References 

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4.    Brilakis E.S., Wang T.Y, Rao S.V., et al. Frequency and predictors of drug-eluting stent use in saphenous vein bypass graft percutaneous coronary interventions: a report from the American College of Cardiology National Cardiovascular Data CathPCI registry. JACC Cardiovasc Interv. 2010; 3:1068-73.

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