Treatment algorithms for patients with (sub)acute type B aortic dissections.

Area of Science:

• Cardiovascular Medicine
• Vascular Surgery
• Interventional Cardiology

Background:

• Aortic dissection, particularly type B, is a critical cardiovascular emergency.
• Traditional management stratified treatment based on complicated (surgical) vs. uncomplicated (medical) dissection.
• A paradigm shift towards endovascular repair for complicated type B aortic dissection is evident.

Purpose of the Study:

• To review current literature on treatment options for acute type B aortic dissection.
• To discuss the optimal timing for intervention.
• To propose a treatment algorithm for acute type B aortic dissection.

Main Methods:

• Review of existing literature and meta-analyses comparing endovascular repair (TEVAR) with open surgical repair.
• Analysis of outcomes for medical management versus early TEVAR in uncomplicated cases.
• Synthesis of evidence to inform treatment recommendations.

Main Results:

• TEVAR demonstrates lower perioperative mortality and morbidity compared to open surgery for complicated type B dissection.
• Best medical therapy has acceptable early outcomes but may not prevent late aortic complications.
• Early TEVAR shows potential for false lumen thrombosis and aortic remodeling in selected patients.

Conclusions:

• TEVAR is increasingly the standard for complicated acute type B aortic dissection.
• Early TEVAR should be considered preventively in select uncomplicated cases with suitable anatomy.
• A proposed treatment algorithm aims to optimize management strategies for acute type B aortic dissection.