[Use of stents with bioactive coating in treatment of patients with lesions of the superficial femoral artery]. / Primenenie stentov s bioaktivnym pokrytiem v lechenii bol'nykh s porazheniem poverkhnostnoi bedrennoi arterii.

The authors analysed the immediate outcomes of implanting stents with bioactive coating in treatment of patients presenting with atherosclerotic lesions of the superficial femoral artery. Over the period from January 2014 to December 2015, endovascular interventions on the superficial femoral artery were carried out in a total of 18 patients (mean age 61.3±9.2 years). The implants inserted were stents with bioactive coating based on titanium oxinitride, measuring 6 to 8 mm in diameter and being from 50 to 200 mm long. Prior to operation and 7 days after implantation of the stent, the immunoenzymatic assay was used to determine the level of nitrogen nitric oxide (NO) in blood. The stents' patency was assessed by the findings of ultrasound duplex scanning performed at 30 days, and then 6 and 12 months after the intervention. There were no complications either during the operation or in the early postoperative period. An increase in the ankle-brachial index was observed in all patients: with the average value prior to treatment amounting to 0.4±0.3 and equalling 1.1±0.2 after stenting (p<0.0001). Normalization of the blood NO level was revealed (was noted to normalize): the mean value prior to operation amounted to 18.9±2.3 µmol/L and after operation to 28.9±4.1 µmol/L (p<0.05). Primary patency rate of the stents was 100% at 30 days, 94.5% (1 occlusion) at 6 months and 88.8% (1 restenosis and 1 occlusion) at 12 months. The patients with occlusion or restenosis were subjected to repeat endovascular interventions, with restoration of patency of the construction (with the construction's patency restored). By now all the 18 patients show preserved patency (currently patency was preserved) of lower-limb arteries, with no evidence of restenosis in the zones of operations. It was concluded that using stents with bioactive coating based on titanium oxinitride results in normalization of the level of NO in blood, which may contribute favourably to prolongation of the period of functioning of endovascular constructions. The first data concerning primary patency of stents of this type make it possible to count on betterment of the remote results of treatment of patients presenting with atherosclerotic lesions of the superficial femoral artery.

[ENDOVASCULAR ABDOMINAL AORTIC ANEURISM REPAIR].

The authors analyzed the single-center experience of treatment of 72 patients with abdominal aortic aneurisms and severe accompanied pathology. The aneurisms were repaired by stent-grafts. All the patients had abdominal aortic aneurisms with the diameters from 41 to 84 mm against the background of severe somatic pathology. It was a contraindication to planned open surgery. An installation of stent-graft was successful in all 72 follow-ups. It wasn't necessary to use a conversion to open surgery. The follow-up period consisted of 44,6?2,1 months. Control ultrasound and computer tomography studies hadn't revealed an increase of aneurism sack sizes or "eakages". A reduction of abdominal aortic aneurism sizes was noted in 37 patients on 4-5% during first year after operation. The stent-graft implantation extends the possibilities of abdominal aortic aneurism treatment for patients from a high surgical risk group.

[WAYS OF IMPROVEMENT OF LOOP ENDARTERECTOMY RESULTS FROM ILIAC-FEMORAL SEGMENT].

The article presents an analysis of treatment results of 91 patients with iliac-femoral segment artery occlusion at the period from 2008 to 2014. Patients were divided into 2 groups: main group (n=30) consisted of patients who undergoing a half-closed loop endarterectomy with following implantation of stent-grafts in this area and control group (n=61) had patients whom were performed routine half-closed loop endarterectomy. The II degree of ischemia of lower extremities was in 88 (96,7%) patients and III degree had 3 (3,3%) patients. The areas of abnormalities of intravascular pattern were detected in 100% of cases in intraoperative angiography. They were modified using stent-grafts. A primary vascular patency was 100% in the first group and it numbered 65% in the second group during 5 years. The intraoperative angiography control with stent-graft implantation to the area of endarterectomy allowed reliable improvement of treatment results.