The results of total arch graft implantation with open stent-graft placement for type A aortic dissection.
BACKGROUND
One problem that conventional ascending treatment for type A aortic dissection has not satisfactorily resolved is chronic enlargement of residual dissection in the aortic arch and descending aorta. To address this problem, we have developed a new method for type A aortic dissection: total arch graft implantation with open-style stent-graft placement.


METHODS
From October 1994 through October 1999, 19 patients with type A aortic dissection (13 acute and 6 chronic dissections) underwent total arch graft implantation with open-style stent-graft placement. After achievement of general anesthesia and hypothermic extracorporeal circulation, we replaced the dissected ascending aorta and neck vessels with a 4-branched graft and repaired the descending aorta with a stent graft to close the entry site completely and to obtain better peripheral perfusion. We then examined the acute-phase and chronic-phase results and the outcomes of the false lumen and dissected aorta.


RESULTS
There were 1 (5.3%) hospital death and 2 late deaths. The survivals at 1 and 3 years were 89.5% and 82.6%, respectively. The following complications occurred in the perioperative period: 1 stroke, 2 cases of temporary paraparesis, 2 cases of temporary hemodialysis, and 3 cases of mediastinitis. No pulmonary complications were observed. Six months postoperatively, the targeted entry sites were completely closed in all cases, 80% (8/10) of preoperatively patent false lumina were clotted at the level of the end of the stent graft, and 60% (9/15) of the false lumina and 40% (6/15) of the dissected aorta had shrunk significantly. Two (13.3%) of 15 cases of postoperative dilatation in the dissected aorta were observed, and reoperation related to residual dissected aorta was performed in only 1 (1/17 [5.9%]) patient during the mean follow-up period of 2.4 +/- 1.6 years.


CONCLUSIONS
Our preliminary review of the total arch graft implantation with a stent graft suggests that this new procedure for type A aortic dissection might provide better results in both the acute and the chronic phase, especially with regard to the outcome for the false lumen and dissected aorta.
Kato
Masaaki
M
Division of Cardiovascular and Thoracic Surgery, Department of Surgery, Saitama Medical School, Saitama, Japan. mkato@xk9.so-net.ne.jp
Kuratani
Toru
T
Kaneko
Mitsunori
M
Kyo
Shunei
S
Ohnishi
Kenji
K
D000328:Adult; D000368:Aged; D000784:Aortic Dissection / Q000401:mortality / Q000601:surgery*; D001013:Aorta, Thoracic / Q000000981:diagnostic imaging / Q000473:pathology / Q000637:transplantation*; D001014:Aortic Aneurysm / Q000401:mortality / Q000601:surgery*; D019917:Blood Vessel Prosthesis Implantation; D020878:Device Removal; D018618:Echocardiography, Doppler, Color; D005260:Female; D005500:Follow-Up Studies; D017052:Hospital Mortality; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000209:etiology / Q000401:mortality; D015607:Stents; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D014654:Vascular Patency / Q000502:physiology