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Ann Thorac Surg 2000;70:1227-1233
© 2000 The Society of Thoracic Surgeons
a Department of Cardio-Thoracic Surgery, St. Antoniusziekenhuis, Nieuwegein, The Netherlands
b Department of Cardiological Epidemiology, St. Antoniusziekenhuis, Nieuwegein, The Netherlands
Address reprint requests to Dr Casselman, Department of Cardio-Thoracic Surgery, St. Antoniusziekenhuis, Koekoekslaan 1, 3435 CM Nieuwegein, The Netherlands
e-mail: casself{at}hotmail.com
Background. The aim of this study was to determine the durability of aortic valve preservation and root reconstruction in type A aortic dissection with involvement of the aortic root.
Methods. From November 1976 to February 1999, 246 patients underwent surgical treatment for acute type A aortic dissection at our institution. In 121 patients (49%), all with acute type A dissection and aortic root involvement, the aortic valve was preserved and one or more of the sinuses of Valsalva were reconstructed. The mean age of this group was 59 ± 11 years and 70 (58%) were men. Thirty patients (25%) were operated in cardiogenic shock. Criteria for aortic root reconstruction were technical feasibility and surgeon preference. Techniques used for reconstruction were valve resuspension in all patients and additional reinforcement of the aortic root with Teflon (L.R. Bard, Tempe, AZ) felt (n = 21), gelatin-resorcinol-formaldehyde-glue (GRF-glue, Fii, Saint-Just-Malmont, France) (n = 103), or fibrinous glue (Tissu-col, Immuno AG, Vienna, Austria) (n = 5). Mean follow-up was 43.5 ± 46 months.
Results. The operative mortality was 21.5% (n = 26). Actuarial survival was 72% ± 4%, 64% ± 5%, and 53% ± 6% at 1, 5, and 10 years, respectively. Median aortic regurgitation in patients with retained native aortic valve at follow-up was 1+. All root reoperations included aortic valve replacement (n = 12). Freedom from aortic root reoperation was 95% ± 2% at 1 year, 89% ± 4% at 5 years, and 69% ± 9% at 10 years. The incidence of aortic root reoperation was 23%, 11%, and 40%, respectively, when Teflon felt, GRF-glue, and fibrinous glue were used for root reconstruction. Multivariate Cox proportional hazard analysis revealed the use of fibrinous glue (RR = 8.7; p = 0.03) as well as the presence of an aortic valve annulus more than 27 mm (RR = 4.2; p = 0.04) as independent risk factors for aortic root reoperation.
Conclusions. Aortic valve preservation in acute type A dissection provides relatively durable results. The use of fibrinous glue for root reconstruction seems to compromise the long-term durability of the repair compared with Teflon felt and GRF-glue. A dilated aortic annulus requires a more extensive root procedure.
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