Biomedical subjects

A A Poliantsev

Publications and source records attributed to A A Poliantsev.

12 recordsLinked to original sources

PubMed2004

[Prognosis of complications after reconstructive surgeries on the aorto-iliac segment].

Evaluation of efficacy of neuronet technologies for prognosis of specific complications after reconstructive surgeries on aorto-iliac segment was made. A learning sample consisted of 500 reconstructive surgeries, a test one - 161. High efficacy of analog neuron nets was revealed. Prognosis of early thrombosis, postoperative bleeding and also of lethal outcome demonstrated better results, mistake of prognosis was 3.7, 1.2 and 4.6%, respectively. Prognosis of infectious complications and long-term outcomes demonstrated worse results, mistake of prognosis was 7.0 and 10.5%, respectively.

Aorta, Abdominal↗

PubMed2004

Effect of Buerger's thromboangiitis activity on the outcomes of vascular reconstructions.

Altogether 39 patients suffering from thromboangiitis obliterans were under observation. The vasculitis activity score (VAS) developed by R.A. Luqmain et al. (1994) was used as a criterion for thromboangitis activity. The patients were distributed into 2 groups: the first group included patients in the period of remission and the second, group comprised patients in the period of exacerbation. The patients underwent different types of vascular reconstructions. On examination of hemostasis and hemorheology the second group patients demonstrated potentiation of platelet function, inhibition of antiaggregation activity of the arterial wall, the rise of aggregation activity of red blood cells, and inhibition of blood fibrinolytic activity. The tendency toward hypercoagulation and hyperaggregation revealed in the second group patients led to deterioration of the immediate outcomes of reconstructive operations. Thrombosis of the reconstructed area was recorded in 5 (26.31%) first group patients and in 7 (35%) second group patients. In the first group, the high limb amputation was accomplished in one (5.26%) patient whereas in the second group, amputation was performed in 6 (30%) cases. So, the VAS according to R. A. Luqmain et al. (1994) is a reliable predictor which allows to carry out the screening of patients with Buerger's thromboangiitis for vascular reconstructions. The presence of the clinical signs of vasculitis activity in Buerger's thromboangitis requires preliminary preliminary preparation aimed at the removal of inflammation and correction of hemorheologic and hemostatic disorders.

Acute Disease↗

PubMed2001

[Aneurysms of the aorta and its visceral branches as a cause of gastrointestinal hemorrhage].

From 1993 till 1999 6 patients with aneurysmointestinal fistulas complicated by bleedings were operated. In 4 cases the aneurysmointestinal fistulas were primary, in 2 cases--secondary. Gastroduodenoscopy, ultrasonic examination of abdominal organs, retroperitoneal space and duplex scanning of main vessels were used. Correct diagnosis before operation was made in 5 patients. The following operations on the vessels were performed: suturing of defect of central anastomosis (1), aortobifemoral grafting (1), abdominal aorta grafting (2), suturing of aortal defect (1), resection of peripheral aneurysm (1). Thrombosis of prosthesis branch (1) and suppuration of prosthesis bed with arrhosive bleeding (2) were early postoperative complications. Immediate postoperative lethality was 33.3%. Long-term results are followed in 3 patients. There were no repeated signs of graft infection in remote period. Basic methods of clinical and instrumental examination including ultrasound permit to make correct diagnosis before operation. Active surgical policy saves the life in the majority of patients, but it is necessary to use carefully the synthetic grafts for arterial vessels repair.

Aged↗

PubMed2000

[Prevention of early thrombotic complications after reconstructive operations in occlusions of the aorto-iliac segment].

108 patients with atherosclerosis of aorto-iliac segment have undergone various reconstructive operations on this segment. Depending on the treatment all the patients were divided in 2 groups (test group--54 patients, control group--54 patients). The patients of the control group received aspirin, rheopolyglucin and trental for correction of hemorheology and hemocoagulation disorders. In patients of the test group at the same time as this treatment, the indirect electrochemical blood oxidation by intravenous infusion of 0.03% sodium hypochlorite was applied. Regional hemodynamics, hemorheology and hemostasis indices were studied in all the patients. It was established that indirect electrochemical blood oxidation permits to significantly improve the hemorheology indices, to diminish thrombophilia phenomenon during the treatment and early postoperative period. It was noted that early thrombotic reocclusion and amputations rates were reduced in the test group.

Adult↗

PubMed1991

[Is selective proximal vagotomy expedient in the treatment of bleeding duodenal ulcers?].

The article analyses the results of truncal and selective proximal vagotomy with gastric draining operations in 101 patients with bleeding duodenal ulcer. The patients' condition, the results of special methods of examination, and the morphological changes in the gastric mucosa were studied. It was found that selective proximal vagotomy with drainage of the stomach had no advantages over truncal vagotomy. Besides, being a technically more difficult operation than truncal vagotomy, it fails to meet the requirements of emergency surgery and its application in patients with a bleeding duodenal ulcer isnot expedient.

Contraindications↗

PubMed1988