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Impact of initial aortic diameter and false-lumen area ratio on Type B aortic dissection prognosis

Akihito Matsushita1,2, Takashi Hattori1, Yu Tsunoda1

  • 1Department of Cardiovascular Surgery, Seikeikai Chiba Medical Center, Chiba, Japan.

Interactive Cardiovascular and Thoracic Surgery
|October 20, 2017
PubMed

Insights

For uncomplicated acute Type B aortic dissection (ATBAD), initial aortic diameter ≥40mm and a larger false lumen are key predictors of adverse events. These patients may benefit from early endovascular intervention for better outcomes.

Area of Science:

  • Cardiovascular Surgery
  • Vascular Medicine
  • Medical Imaging

Background:

  • Medical management is standard for uncomplicated acute Type B aortic dissection (ATBAD).
  • Endovascular treatment is a potential alternative, but patient selection remains unclear.
  • Identifying risk factors for adverse events is crucial for guiding treatment decisions.

Purpose of the Study:

  • To evaluate outcomes in patients with uncomplicated ATBAD.
  • To identify predictors of major adverse events (MAEs) in this patient cohort.

Main Methods:

  • Retrospective review of 134 patients with uncomplicated ATBAD (2004-2015).
  • Median follow-up of 47 months with a 98.5% follow-up rate.
  • Multivariable analysis to identify independent predictors of MAEs.

Main Results:

  • In-hospital mortality was 0.7%.
  • 1-, 3-, and 5-year freedom from MAEs were 79.8%, 71.4%, and 63.6%, respectively.
  • Independent risk factors for MAEs included initial aortic diameter ≥40mm (HR 3.735) and false-lumen diameter > true-lumen diameter (HR 3.411).

Conclusions:

  • Initial aortic diameter ≥40mm and a larger false lumen predict MAEs in uncomplicated ATBAD.
  • Patients with these risk factors may benefit from early endovascular intervention.
  • These findings aid in optimizing treatment strategies for ATBAD.
Abstract

Keywords:
Acute Type B aortic dissectionAdverse eventsPredictorsUncomplicated

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