DNA Links Bicuspid Aortic Valve To Enlarged Aortas
June 11th, 2009In the past, we have discussed the genetics of heart valve disease. (So you know… I, like my Great Uncle Mooney, suffered from a congenital bicuspid aortic valve which needed to be replaced.)
On the topic of heredity and heart valve disease, a new study was just published in the Journal of the American College of Cardiology which suggests that nearly a third of first-degree relatives (siblings, children or parents) of patients with a bicuspid aortic valve are likely to have enlarged aortas. This was found even in the absence of any abnormalities of the heart valve itself.
According to the study:
- 32% of first-degree relatives with no heart valve abnormality had significantly larger aortas than expected for age, gender, and body size as compared with no enlargement seen in control patients.
- The study also found that the aortas of the first-degree relatives had abnormal stiffness similar to the patients with congenital bicuspid valve.
“If you know that a relative does have bicuspid aortic valve, then you know that you should be screened,” said study author Kirsten Tolstrup, MD, Cardiac Noninvasive Laboratory, Cedars-Sinai Heart Institute, Los Angeles, California. “Bicuspid aortic valves appear to be a genetic condition that has many different manifestations, so we will be studying the genes.”
This study, conducted among 54 patients with bicuspid aortic valve and 48 first-degree relatives of those patients as well as 45 matched controls found that 32% of apparently healthy first-degree relatives have enlarged aortas; 53% of patients with bicuspid valves had enlarged aortas; and 9.4% of first-degree relatives had aortic valves with only two leaflets.
The findings suggest that patients with bicuspid aortic valve and their first-degree relatives should have a screening echocardiogram to be evaluated for dilated aorta and bicuspid aortic valve.
Interesting study, right?
Keep on tickin!
P.S. To learn more about a father-and-son team that both had aortic valve replacement surgery from the same doctor, click here.
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| About The Author: Adam Pick is a double, heart valve surgery patient and author of The Patient's Guide To Heart Valve Surgery. This unique book integrates clinical research with the personal experiences of 135 former patients to help future patients and their caregivers better understand the problems, the opportunities and the realities of heart valve surgery. To learn more about Adam and his heart valve surgery book, click here. |
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