Aortas stentu-protezu eksperimentalais modelis

Recent advances in technology have resulted in the development of minimally invasive approaches to reduce risk of major aortic surgery. The problems of the complex study of the transluminally placed endoluminal aortic stent-grafts is becoming increasingly important because of the treatment of aortic pathology. The development of endoluminal treatment of this pathology required more accurate experimental data on the new devices and healing response of a stent-grafts. The experimental animal study of self expanding "nitinol/dacron" intraluminal stent-grafts (Medtronix/AneuRx, Cupertino, CA, USA) was carried out. Forty-eight adult sheep were used for this study. Eighteen bifurcated and 12 straight stent-grafts were placed to exclude abdominal aortic aneurysms created surgically. Eighteen straight stent-grafts were deployed in the thoracic aorta. Stent-graft prostheses were properly deployed and all aneurysms were excluded. All straight and 11 of 12 bifurcated were patent at the time of explant at the various time intervals between one week to one year. Stent-grafts were well incorporated and were without mural thrombus. There was no stent-graft migration. Results indicated that endoluminal stent-grafts can effectively treat experimental aortic aneurysms with consistent patency, secure fixation, and good incorporation into the aortic wall in this animal modelSeparate summary in Latvian, English, German, 28 p.Available from Latvian Academic Library / LAL - Latvian Academic LibrarySIGLELVLatvi