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J Thorac Cardiovasc Surg 2006;131:235-236
© 2006 The American Association for Thoracic Surgery
Brief Communication |
a Department of Thoracic and Cardiovascular Surgery, Hannover Medical School, Hannover, Germany
b Department of Radiology, Hannover Medical School, Hannover, Germany
Received for publication July 8, 2005; revisions received August 14, 2005; accepted for publication August 19, 2005. * Address for reprints: Christian Kühn, MD, Department of Thoracic and Cardiovascular Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany (Email: kuehn{at}thg.mh-hannover.de).
A 60-year-old man with distal aortic ascending aneurysm, aortic arch aneurysm and subacute rupture of the descending aorta had undergone aortic valve repair and proximal ascending aorta replacement following acute type A aortic dissection 26 years ago. Surgical therapy included replacement of distal ascending, arch, and complete thoracoabdominal descending aorta using selective antegrade cerebral and abdominal organ perfusion, reinsertion of the brachiocephalic trunc, left carotid artery, two intercostal arteries (Th-9/10), reimplantation of both renal arteries, the superior mesenteric artery and coeliac trunc through a left-sided thoracotomy and thoracoabdominal approach.
Clinical Summary
A patient underwent emergency aortic valve reconstruction combined with proximal ascending aorta replacement following traumatic type A aortic dissection after a ski-accident 26 years ago. The following years were uneventful and the patient was in good condition without signs of kidney dysfunction or abdominal malperfusion. An increasing aneurysm (diameter 4,5 cm) of the left common iliac artery was resected and a 10 mm Dacron tube graft inserted two years ago. A computed tomography scan one year later showed the known dissection of the aortic arch and descending aorta (Figure 1). However, diameter of the aortic arch and the descending aorta had increased to 6.5 cm and 7.5 cm, respectively just proximal to the diaphragm. In addition, a contained rupture was apparent.
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In the right recumbent position, a skin incision was made from the lower angulus of the left scapula down to the belly button. The fourth and the eighth intercostal spaces were opened, the costal arch was divided, succeded by preparation of the retroperitoneum after incision of the diaphragm. Cardiopulmonary bypass was established through cannulation of the left femoral artery and vein. During induction of hypothermia (26°C), the descending aorta (including the area of rupture), the aortic arch and the ascending aorta were dissected (Figure E1). Following onset of ventricular fibrillation the descending aorta was clamped. Meanwhile perfusion of the lower body was maintained by extracorporal circulation, the aortic arch was opened and selective cerebral perfusion was established via balloon tipped catheter in the brachiocephalic trunk and the left carotid artery. The left subclavian artery was clamped. Cardioplegic arrest was induced using a modified large ballon catheter for occlusion of the ascending aorta and administration of cardioplegia solution. An end-to-end anastomosis of the in situ ascending Dacron graft and a 28 mm woven Dacron graft was performed. The brachiocephalic trunk and the left carotid artery were reinserted as an island cuff. Selective cerebral perfusion was stopped, and retrograde perfusion of the upper body via cannulation of the prosthesis was reestablished. Following reinsertion of two intercostal arteries (Th-9 and Th-10), the heavily calcified infrarenal aorta was dissected and after discontinuation of lower body bypass it was anastomosed in end-to-end technique to a second 28-mm woven Dacron graft. Meanwhile, the abdominal organ perfusion was secured via balloon tipped catheters in the superior mesenteric artery, coeliac trunc and the left renal artery. The reimplantation of these vessels and the right renal artery was accomplished as an island cuff. A final end-to-end graft-to-graft anastomosis and removal of perfusion catheters completed the aortic repair. During rewarming, a side-to-end bypass between the distal aortic arch graft and the left subclavian artery was performed. The patient was weaned from cardiopulmonary bypass after 333 minutes bypass time with minimal inotropic support. The further postoperative course was uneventful in the absence of paraplegia and cognitive deficits and the patient was discharged in good conditions on postoperative day 13.
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The multiple pathology in this patient including aortic arch aneurysm, chronic dissection of a distal aortic ascending aneurysm and a rupture of the enlarged descending aorta twenty-six years after traumatic type A aortic dissection with surgical aortic valve repair and proximal ascending aortic replacement posed a tactical and surgical challenge. We decided to replace the entire aorta including the distal ascending aorta, aortic arch and the thoracoabdominal descending aorta in one session
1,2
. Therefore, the patient underwent a single-stage procedure through a thoracoabdominal approach combined with left thoracotomy. In hypothermia we used selective cerebral perfusion and abdominal organ perfusion for organ protection
3
. The patient was discharged without neurological deficits or signs for malperfusion with good liver and kidney function and went back to normal life. The postoperative computed tomography (Figure 2) showed a satisfactory result of the entire aorta after the approach that is described in this report as a useful treatment alternative in patients with these rare combination of diagnoses.
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References
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A. Zierer, R. K. Voeller, K. E. Hill, N. T. Kouchoukos, R. J. Damiano Jr, and M. R. Moon Aortic Enlargement and Late Reoperation After Repair of Acute Type A Aortic Dissection Ann. Thorac. Surg., August 1, 2007; 84(2): 479 - 487. [Abstract] [Full Text] [PDF] |
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