Impact of the entry site on late outcome in acute Stanford type B aortic dissection†.
作者信息
Kitamura Tadashi, Torii Shinzo, Oka Norihiko, Horai Tetsuya, Itatani Keiichi, Yoshii Takeshi, Nakamura Yuki, Shibata Miyuki, Tamura Tomoki, Araki Haruna, Matsunaga Yoshikiyo, Sato Hajime, Miyaji Kagami
机构信息
Department of Cardiovascular Surgery, Kitasato University School of Medicine, Sagamihara, Japan
Department of Cardiovascular Surgery, Kitasato University School of Medicine, Sagamihara, Japan.
出版信息
Eur J Cardiothorac Surg. 2015 Nov;48(5):655-61; discussion 661-2. doi: 10.1093/ejcts/ezu531. Epub 2015 Jan 18.
OBJECTIVES
This study aimed to investigate whether the entry site of acute type B aortic dissection affects late outcomes.
METHODS
Inpatient and outpatient records were retrospectively reviewed.
RESULTS
We identified 224 cases of acute type B aortic dissection between 1998 and 2013. Of these 224 patients, 168 were men and the age was 64.2 ± 12.6 (range 23-94) years, from which 130 presented with the entry at a location downstream of the distal aortic arch, 67 with the entry at the outer curvature of the distal aortic arch and 27 with the entry at the inner curvature. At the initial presentation, 127 patients had descending false lumen thrombosis. The 30-day mortality rate was 2%, and 8% of patients had malperfusion. The entry at the outer curvature was associated with a higher risk of 30-day mortality. Patients with the entry at a location downstream were significantly older, and had a higher chance for primarily thrombosed descending false lumen and a lower risk of malperfusion. At follow-up (6.0 ± 4.1 years), the actuarial survival rates were 97, 83 and 60%, freedoms from open aortic surgery were 96, 91 and 86%, aortic intervention were 73, 66 and 63% and aortic events were 71, 60 and 52% at 1, 5 and 10 years, respectively. Multivariate logistic regression analysis revealed that the outer curvature entry and maximum aortic diameter were correlated with open aortic surgery, aortic intervention and aortic events. Of the 127 patients with primarily thrombosed false lumen, the outer curvature entry was significantly correlated with aortic events.
CONCLUSIONS
The primary entry at the outer curvature of the distal aortic arch, as well as the large aortic diameter, is associated with a higher risk of late open aortic surgery, aortic intervention and aortic events in acute type B aortic dissection. Thus, the entry site should be taken into consideration in the establishment of an appropriate treatment indication of type B aortic dissection.
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