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Eur J Cardiothorac Surg 2002;21:964-969
© 2002 Elsevier Science NL
a Department of Cardio-Thoracic Surgery, University of Vienna, Währinger Gürtel 18-20, A-1090 Vienna, Austria
b Department of Angiography and Interventional Radiology, University of Vienna, Währinger Gürtel 18-20, A-1090 Vienna, Austria
Received 17 September 2001; received in revised form 17 January 2002; accepted 18 January 2002.
* Corresponding author. Tel.: +43-1-40400-5620; fax: +43-1-40400-6972
e-mail: martin.grabenwoeger{at}univie.ac.at
Objectives: This study was performed to evaluate the feasibility, safety and effectiveness of endovascular stent-grafting in treating Stanford type B acute aortic dissection. We describe our first clinical experiences and initial results with stent-grafting across the primary entry tear in patients with acute aortic dissection type B. Methods: Between March 2000 and August 2001, nine patients with acute type B dissection were treated endoluminally by stent-graft implantation. There were seven male and two female patients with a mean age of 63 years (between 48 and 85 years). In all nine patients aortic dissection was diagnosed by multislice computed tomography (CT) angiography. All nine patients had a maximal aortic diameter of 5.5 cm or more and recurrent pain, one patient showed hemoptysis. This patient with signs of a contained rupture was treated under emergency condition, the eight remaining patients were in hemodynamic stabile condition at the time of intervention. The GORE® Excluder stent-graft system was used in eight patients (mean 1.8 stents/patient) and the TALENT® stent-graft system in one patient, which were introduced transfemorally. Results: The primary entry tear could be sealed successfully in all nine patients. Complete thrombosis of the false thoracic aortic lumen was obtained in two patients, in the remaining seven patients the false lumen was obliterated in the area of the thoracic aorta but perfused via re-entries in the abdominal region. No severe intraoperative complications occurred. One patient developed bilateral incomplete paraplegia with motor and sensory deficits affecting completely the right leg and partially the left leg, 14 h after intervention. A cerebrospinal fluid drainage was initiated by inserting a lumbar catheter. All nine patients, including the patient with the transient paraplegia, could be discharged from the hospital in excellent condition and without remaining neurologic deficits. Control CT scans showed a reduction of the false lumen from 2.34±0.58 to 0.7±0.44 cm and an increase of the true lumen from 1.56±0.5 to 4.10±0.6 cm in the thoracic aortic region. Mean ICU stay was 1.8 days, mean postoperative hospital stay was 7.6 days. Conclusions: Stent-grafting of acute type B dissections may represent a very effective and promising new method by closure of the primary entry tear, thereby minimizing the risk of rupture of the thoracic aorta and optimizing distal perfusion by decompression of the true lumen.
Key Words: Acute aortic dissection type B • Stent-graft placement • Cerebrospinal fluid drainage
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