Objective: To determine late patency of the aortic false lumen and propensity for aneurysm formation after repair of type A dissection.
Design: Retrospective follow up study.
Setting: Regional cardiac surgical unit.
Patients: 28 patients after repair of type A dissection.
Methods: Magnetic resonance imaging (MRI) was performed between 6 weeks and 12 months after operation.
Results: A patent distal false lumen with demonstrable blood flow was found in 22 patients (78%). Only six patients had complete obliteration of the false lumen by thrombus. The conduct of operation did not influence this. Nine patients (32%) showed aneurysmal dilatation of the false lumen and three had a repeat operation.
Conclusions: So-called "successful repair" of aortic dissection does not obliterate the distal false lumen. MRI is a safe and effective radiological procedure for determining patency and dilatation in the false lumen. Patients with type A dissection with blood flow in the false lumen should be studied every 6 months to look for aneurysmal dilatation.
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| http://dx.doi.org/10.1136/hrt.75.1.62 | DOI Listing |
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