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Aortic dissection in Marfan's syndrome
1The Oxford Heart Centre, John Radcliffe Hospital, England.
Background:
Aortic dissection is the most frequent cause of premature death in Marfan's syndrome. Low-risk elective surgery of the abnormal aortic root has the potential to prevent this complication.
Methods:
We examine genetic, structural, and pathophysiological mechanisms of aortic dissection and discuss the surgical methods used when dissection occurs.
Results:
Abnormal fibrillin disturbs the functional relationship between blood flow and vascular endothelial cell response (mechanotransduction). Decreased arterial distensibility also decreases aortic wall stress, thereby predisposing to dissection in the weakened arterial wall. Radical root and wall surgery and lifelong beta-blockade are required after aortic dissection.
Conclusions:
Detailed lifelong medical and surgical treatment can greatly prolong life in Marfan's syndrome. Elective aortic root replacement is paramount in preventing aortic dissection and avoiding subsequent problems in the distal aorta.
Insights
Marfan syndrome patients face premature death from aortic dissection. Elective aortic root replacement surgery is crucial for preventing dissection and improving long-term survival in these patients.
Area of Science:
- Cardiovascular Medicine
- Genetics
- Biomedical Engineering
Background:
- Aortic dissection is a leading cause of premature death in Marfan syndrome.
- Elective surgery on the aortic root can prevent aortic dissection.
Purpose of the Study:
- To examine the mechanisms of aortic dissection in Marfan syndrome.
- To discuss surgical interventions for aortic dissection.
Main Methods:
- Review of genetic, structural, and pathophysiological mechanisms.
- Discussion of surgical techniques for aortic dissection.
Main Results:
- Fibrillin abnormalities disrupt mechanotransduction between blood flow and endothelial cells.
- Reduced arterial distensibility increases aortic wall stress, leading to dissection.
- Post-dissection treatment requires radical surgery and lifelong beta-blockade.
Conclusions:
- Comprehensive lifelong medical and surgical management can extend life in Marfan syndrome.
- Elective aortic root replacement is essential for preventing aortic dissection and distal aortic issues.