Christina Lohrenz

  • Citations Per Year
Learn More
PURPOSE To describe an innovative technique to occlude distal backflow into a false lumen aneurysm by controlled rupture of the dissection membrane after stent-graft implantation. TECHNIQUE The "Knickerbocker technique" involves relining the true lumen in the descending aorta with an oversized thoracic tubular endograft, followed by controlled rupture of(More)
The prognosis of patients suffering from peripheral arterial occlusive disease (PAD) is directly correlated with the severity of the disease. In critically ischemic legs, after one year only 50% will be alive with a preserved leg. The other 50% will die or undergo an amputation during this time. Reconstructive surgery is highly effective in PAD caused by(More)
Proximal displacement of thoracic aortic endografts is a catastrophic adverse event, which rarely occurs but is associated with extremely high morbidity and mortality. We describe herein the case of a patient with accidental proximal displacement of a thoracic endograft with occlusion of all supra-aortic branches, successfully rescued by the combination of(More)
Eine weltweit hohe Inzidenz an Majoramputationen lassen Forderungen nach verbesserten Behandlungsstrategien laut werden, um die Rate an Majoramputationen zu verringern. Dabei sind mehr als 90% der vorgenommenen Majoramputationen vaskulärer und diabetischer Genese. Die Dringlichkeit der Behandlungsbedürftigkeit der akuten und insbesondere der chronischen(More)
PURPOSE To report a technique to create an extra-large vascular plug for occlusion of a large distal false lumen in chronic aortic dissection. TECHNIQUE The "candy-plug" technique is demonstrated in a 58-year-old multimorbid man with a history of complicated acute type B aortic dissection and a 9-cm chronic thoracic false lumen aneurysm. The patient(More)
PURPOSE To describe a simple and quick technique for converting a Zenith bifurcated stent-graft to an aortouni-iliac device for emergency treatment of hemorrhage when a suitable marketed stent-graft is not readily available. TECHNIQUE The technique is described in an emergent case involving a 72-year-old man presenting with an aortoduodenal fistula and(More)
Since graft patency is the predominant predictor of long-term survival after vascular surgery, intraoperative graft patency control is of major importance for improving quality assurance. Intraoperative quality control is of major importance to obtain good short- and longterm results and to eliminate the need for reoperation. Currently there is no(More)
PURPOSE To describe and prove the concept of a technique for complete transapical deployment of a single-branch aortic arch endograft in a porcine model. METHODS Eight domestic pigs underwent antegrade transapical delivery of a single-branch arch endograft, including a mating stent-graft to the innominate artery. Technical feasibility, operating time,(More)
PURPOSE To compare the technical feasibility and hemodynamic alterations during antegrade transcardiac access routes vs conventional transfemoral access (TFA) for endovascular treatment of the ascending aorta in a porcine model. METHODS Antegrade transseptal access (TSA), transapical access (TAA), and TFA were used for implantation of custom-made(More)
PURPOSE To evaluate the hemodynamic impact of transseptal sheath access to the ascending aorta using increasing sheath diameters. METHODS Transseptal puncture was performed in 6 pigs (62±9 kg) facilitating guidewire passage across the left heart to the descending aorta to establish transseptal through-and-through access into the ascending aorta.(More)