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Initial management of acute type-A aortic dissection with a thrombosed false lumen: a retrospective cohort study

Yoshihiko Kurimoto1, Kiyofumi Morishita, Nobuyoshi Kawaharada

  • 1Department of Traumatology and Critical Care Medicine, Sapporo Medical University, S 1, W 16, Sapporo 060-8543, Japan.

Surgery Today
|August 4, 2004
PubMed

Insights

Surgery significantly improves outcomes for acute type-A aortic dissection with a clotted false lumen. Conservative management leads to higher early mortality due to redissection, while surgical intervention offers better long-term survival and event-free rates.

Area of Science:

  • Cardiovascular Surgery
  • Thoracic Surgery
  • Aortic Dissection

Background:

  • Acute type-A aortic dissection (ATAAD) with a clotted false lumen presents management challenges.
  • Conservative treatment is often considered, but its efficacy in this specific subgroup is debated.
  • Enhanced computed tomography (CT) aids in identifying a clotted false lumen in ATAAD patients.

Purpose of the Study:

  • To compare the early and late outcomes of conservative versus surgical management for ATAAD with a clotted false lumen.
  • To evaluate the impact of treatment strategy on mortality and dissection-related events.

Main Methods:

  • Retrospective analysis of 114 ATAAD patients identified with a clotted false lumen via enhanced CT.
  • Comparison of 13 hemodynamically stable patients managed conservatively (Group C) versus 17 managed surgically (Group S).
  • Exclusion criteria included critical condition, pericardial effusion, organ ischemia, or ascending aorta diameter >50 mm.

Main Results:

  • Early mortality was significantly higher in the conservative group (23.1%) compared to the surgical group (0%, P=0.037).
  • Early deaths in Group C were attributed to acute-phase redissection.
  • Five-year dissection-related event-free rates were significantly better in the surgical group (92.9%) versus conservative group (46.2%, P=0.002).

Conclusions:

  • Surgical management of ATAAD with a clotted false lumen yields superior early and late outcomes compared to conservative treatment.
  • Conservative management indications should be carefully limited due to the high fatality associated with redissection.
  • Prompt surgical intervention is recommended for improved survival and reduced complication rates in this patient cohort.
Abstract

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