The "first generation" of endovascular stent-grafts for patients with aneurysms of the descending thoracic aorta

J Thorac Cardiovasc Surg. 1998 Nov;116(5):689-703; discussion 703-4. doi: 10.1016/S0022-5223(98)00455-3.


Objective: Our goal was to determine whether endovascular stent-grafting is feasible and effective for patients with aneurysms of the descending thoracic aorta.

Methods: Starting in July 1992, we conducted a prospective, uncontrolled clinical trial in 103 patients (mean age 69 years [range 34-89 years]) who underwent endovascular treatment of aneurysms of the descending thoracic aorta using a custom-fabricated, self-expanding stent-graft device. Follow-up was 100% complete and averaged 22 months. Sixty-two patients (60%) were judged not to be reasonable candidates for a conventional "open" surgical procedure.

Results: Complete thrombosis of the aneurysm was ultimately achieved in 86 (83%) patients. The early mortality rate was 9% +/- 3% (+/- 70% CL). Multivariable analysis revealed that myocardial infarction or stroke was linked with a higher likelihood of early death (P = .001). Early serious complications included paraplegia in 3% +/- 2% and stroke in 7% +/- 3%. Actuarial survival estimates at 1 year and 2 years were 81% +/- 4% and 73% +/- 5% (+/- 1 SE), respectively; being judged not to be a surgical candidate portended a higher probability of death (P = .003). According to the intent-to-treat principle, "treatment failure" (including all late sudden unexplained deaths) occurred in 38 patients; 53% +/- 10% of patients were free from treatment failure at 3.7 years. Stent-graft related complications occurred commonly and were linked with several anatomic, technical, and patient-related risk factors.

Conclusions: This 5-year clinical trial involving use of a "first generation" device indicates that endovascular stent-grafting of descending thoracic aortic aneurysms is feasible with acceptable medium-term results. More refined, commercially developed devices available today offer less traumatic and more precise stent-graft deployment; these major technical advantages, coupled with important lessons we have learned over time and better patient selection, should be associated with more salutary clinical results in the future.

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Aortic Aneurysm, Thoracic / diagnostic imaging
  • Aortic Aneurysm, Thoracic / mortality
  • Aortic Aneurysm, Thoracic / surgery*
  • Blood Vessel Prosthesis Implantation*
  • Cause of Death
  • Equipment Failure Analysis
  • Feasibility Studies
  • Female
  • Follow-Up Studies
  • Humans
  • Male
  • Middle Aged
  • Postoperative Complications / mortality
  • Prospective Studies
  • Stents*
  • Survival Rate
  • Tomography, X-Ray Computed
  • Treatment Outcome