[Percutaneous transluminal stenting in patients with acute and chronic aortic dissections]

To compare the clinical therapeutic results of percutaneous transluminal stenting between patients with acute and chronic aortic dissections.

From May 2002 to October 2007, 42 patients with acute type B aortic dissection and 40 patients with chronic aortic dissection underwent stenting. The clinical data of the patients were analyzed.

Comparing with the chronic aortic dissection group, the acute aortic dissection group had higher percentage of pleural effusion (16.7% vs 0, P =0.01) and visceral/leg ischemia (23.8% vs 2.5%, P = 0.01). The acute aortic dissection group had higher complications in early term (38.1% vs 15.0%, P = 0.02). All patients were followed up for an average of (18.7 +/- 17.3) months. The rate of complications were higher in the patients with acute aortic dissection than those with chronic aortic dissection (21.4% vs 5.0%, P = 0.03). Kaplan-Meier analysis showed no difference of survival rate between the 2 groups during follow-up period (P = 0.38). The 5-year survival rate was 90.0% in acute aortic dissection group years and 92.5% in chronic aortic dissection group, respectively. The event-free survival rate was higher in the patients with chronic dissection than that with in the patients acute aortic dissection (P = 0.04).

Percutaneous transluminal stenting is effective in the treatment of type B aortic dissection, but there are more complications in acute than in chronic aortic dissection group.