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Endovascular stenting of complicated acute type B dissections represents a safe alternative to surgery. Endovascular stent-grafts of appropriate sizes should be readily available in the hospital for emergency use, thus avoiding delays in treatment.

Double-velour woven Dacron prostheses were investigated both experimentally and clinically. In 6 mongrel dogs, a tandem conduit between the right ventricle and the pulmonary artery was implanted, consisting of a plain woven and a double-velour woven graft. Following explanation after 2, 4, and 6 months, superior healing properties of the double-velour woven prostheses could be assessed by microscopy, as represented by an increase of tissue ingrowth, as well as by a thin and densely adherent inner healing capsule. Double-velour woven grafts were implanted in 50 patients undergoing open heart surgery. All grafts were presealed with fibrin glue and no bleeding could be detected at the time of implantation, even under the adverse influence of full heparinization and extracorporeal circulation.

With the intraoperative use of hyperthermia-assisted high-dose fibrinolysis, improvement of the results of mechanical thrombectomy of extended DVT was possible. The RHFP protected against systemic side effects of the fibrinolysis and show a high safety of application.