Aortic & peripheral vascular disease

Risk of Type B Dissection in Marfan Syndrome: The Cornell Aortic Aneurysm Registry

J Am Coll CardiolPublished Retrospective cohort study

Authors' conclusion

In our contemporary cohort, type B dissections are more common than type A dissections and occur at traditional nonsurgical thresholds.

Study context

Population
Patients with Marfan syndrome in a single-centre registry
Participants
336 patients
Exposure
Marfan syndrome (MFS) patients with vs without type B dissection
  • Type B dissectionn = 47
Outcome
Determinants of type B dissection risk
Methodological detailssingle-centre, registry
  • Single-centre
  • Registry

Main finding

As reported in the abstract

Elective ARR

P < 0.001

Type B dissection
47 (14%)
Type A dissection
9%

Observational data: associations, not effects.

Further findings

Timing of type B dissection relative to aortic root replacement (ARR)

Type B dissection after ARR (mean 13.3 years after ARR)
55%
Type B dissection before or without ARR
45%
Aware of MFS diagnosis before type B dissection
41 (87%)

Predissection descending aorta size

Normal or minimally dilated (<4.0 cm), among those with predissection imaging
88%

Original publication

Risk of Type B Dissection in Marfan Syndrome: The Cornell Aortic Aneurysm Registry. J Am Coll Cardiol. Published 18 October 2023. doi:10.1016/j.jacc.2023.08.055

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