[Comparative study of 2 antithrombotic regimens in 75 patients with coronary endoprostheses]

Abstract

Purpose: To compare systemic anticoagulation with antiaggregation in patients with coronary stent, with regard to subacute occlusion, mean hospital staying and haemorrhagic complications.

Patients and methods: Seventy-five patients with coronary stent were treated with one of two different antithrombotic protocols. A group comprised of 34 patients (group A) received sodium heparin and acenocoumarin, plus acetylsalicylic acid (325 mg) and dipyridamole (225 mg). The remaining 41 patients (group B) were given antiplatelet agents, namely ticlopidine (125-250 mg) and aspirin (125 mg).

Results: One case of group A (2.9%) showed thrombosis due to stent occlusion. No thrombotic complications were seen in the patients with antiplatelet drugs. Haemorrhagic complications were present in 11 group A patients (32.3%), and blood transfusion was necessary in 3 of them. Hemorrhage was present in 9 cases of group B (21.8%), and none of them needed blood transfusion. The mean number of days to achieve INR > 2 was 3.06 (1-11) in group and 2.02 (1-5) in group B.

Conclusions: Antiplatelet regimes appear as a good choice in coronary stent, in spite of the fact that the primary indication seems that of group A.