[Results of intracoronary stenting made in different periods after diagnostic coronary angiography]

The high cost of tools and expendable materials and its associated necessity of solving organizational issues force to delay the implementation of stenting for nonmedical reasons in many cases. This gives a convenient way to evaluate how much effective and safe stenting would be made just after coronary angiography or delayed intervention would be performed and at the same time to consider the way delay in stenting may affect its clinical and angiographic results. The study covered 136 patients with coronary heart disease who had been implanted an intracoronary stent. All this patients were divided into 3 groups. Group 1 included 16 patients who had undergone stent implantation just after diagnostic coronary angiography, Group 2 comprised 42 patients who had the similar procedure no later than a month after coronary angiography, and Group 3 consisted of 78 patients who had it a month or later following angiography. The angiographic success rates of stenting was 100% in Group 1, 97.6% in Group 2, and 92.3% in Group 3. The causes of poor results were evolving myocardial infarction (2.4%) and technical failure (2.4%) in Group 2; evolving myocardial infarction (2.6%), emergency aortocoronary bypass surgery (1.3%), and technical failure (3.8%) in Group 3. In Group 2, 4.8% cases of those undergone delayed stenting showed more significant stenosis than those having diagnostic intervention. In Group 3, there was more progressive stenosis in 16.7% and a transition of stenosis to occlusion in 7.8%. There were no complications (such as hemorrhage, retroperitoneal hematoma, etc.) at the site of puncture in Group 1, but in Group 2 and 3 they were 3.8 and 6.5%, respectively. Delayed stenting frequently adversely affects the outcomes of endovascular treatment due to the higher incidence of complication and to the increasing technical sophistication of the procedure no late than a month after diagnostic coronary angiography.