Variability in the Treatment of High-Risk Type B Aortic Dissection at a Single Center

Area of Science:

• Cardiovascular Medicine
• Vascular Surgery
• Medical Imaging

Background:

• Acute type B aortic dissection (TBAD) presents established high-risk features, yet management strategies remain inconsistent.
• Understanding the clinical significance of these high-risk features and current real-world management practices is crucial for improving patient outcomes.

Purpose of the Study:

• To characterize complicated, uncomplicated, and high-risk TBAD.
• To analyze the management and outcomes associated with different TBAD classifications.
• To evaluate the real-world significance of high-risk features in TBAD management.

Main Methods:

• Retrospective review of 62 patients diagnosed with acute type B aortic dissection.
• Analysis of patient demographics, management strategies (endovascular repair, medical management, hybrid repair), and outcomes.
• Statistical evaluation using Pearson's χ2 test, Fisher's exact test, or analysis of variance.

Main Results:

• Among 32 high-risk TBADs, 66% underwent endovascular repair, 31% received medical management, and 3% had hybrid repair.
• The most common high-risk feature across all treatment groups was aortic diameter >40 mm (50%).
• Adverse postoperative outcomes, particularly endoleak, were highest in high-risk and complicated TBAD groups; only 47% of patients had follow-up.

Conclusions:

• The clinical significance of established high-risk features in guiding TBAD management remains uncertain.
• Real-world practice reveals variable management and a concerning lack of adequate long-term follow-up for TBAD patients.
• Further research is imperative to assess long-term outcomes and refine management strategies for acute type B aortic dissection.