The combined use of multilayer flow modulator stent and conventional stent grafts in complex thoracoabdominal aortic aneurysms and Type 3 dissections accompanying aneurysms.

Abstract

In this study, we present early and mid-term results of the combined use of multilayer flow modulator stent and conventional stent grafts in aortic aneurysms and Type B aortic dissections. The files and computerized data of 78 patients who underwent endovascular stent graft implantation due to an aortic aneurysm and dissection in our clinic between January 2015 and December 2016 were retrospectively analyzed. Among these patients, six male patients (mean age 69.5 years; range 63 to 77 years) who were treated with multilayer flow modulator stents in combination with conventional stent grafts were included. A successful intervention was defined as the placement of the stents into the aneurysmatic region without any complications. The patients were followed for the development of any clinical events during 12 months. The common symptoms observed in the half of the patients were abdominal pain and back pain. One patient had claudication during walking. In all patients, the interventions were successfully completed and no mortality was observed in any patient. One of the patients developed Type 1 endoleak during the procedure; however, it was completely corrected using the aortic stent graft extension. Creatinine levels were elevated (2.1 mg/dL) in one patient on the second day of the operation. The patient did not require dialysis and the kidney functions completely returned to normal on the seventh day. No intra- or postoperative complications developed. Multilayer flow modulator stents seem to be effective and safe in the treatment of aortic aneurysms with major side branches. The combined use of stents with different stent-graft devices increase the success rate and reduce the complication rate in complex aortic aneurysms.