It's Topic Tuesday!

Hi Aortic Hope Community! My name is Anita, and I'm a first year medical student at Brown. I'm excited to share my first blog post with you all! Today, we will be learning about Turner Syndrome, a genetic condition that affects females.

What is Turner Syndrome? 

Turner syndrome is a congenital condition in which one of the X chromosomes is partially or completely missing. Typically, a female has two X chromosomes, or XX. However, in individuals with Turner syndrome, a random error during the division of reproductive cells results in a single X chromosome or other structural alterations. There are two main types of Turner syndrome - Monosomy X (completely missing one X chromosome) and Mosaic Turner syndrome (partially missing). Symptoms can vary significantly from person to person, but commonly include short height, absence of ovarian function, swelling in the hands and feet, heart defects, skeletal abnormalities, and kidney problems. 

How does Turner Syndrome affect the aorta? 

Many individuals with Turner syndrome are born with structural heart abnormalities due to a bicuspid aortic valve, where the valve regulating blood flow from the heart into the aorta has two leaflets instead of the normal three. In addition, coarctation (narrowing) of the aorta occurs in some patients, which forces the heart to pump harder. Individuals with Turner syndrome are prone to progressive enlargement of the ascending aorta (aortic dilation) and have a significantly increased risk for aortic dissection.

How is Turner Syndrome diagnosed? 

Healthcare providers utilize noninvasive prenatal testing and ultrasound to screen babies for congenital disorders prior to birth. If there is suspicion for Turner syndrome, chorionic villus sampling or amniocentesis is done to obtain cells from the unborn baby for chromosomal analysis. After birth, a karyotyping test (blood test) can be done to confirm the diagnosis. 

How is Turner Syndrome managed? 

Management of Turner syndrome requires consistent monitoring from an interdisciplinary care team. One of the main treatments involves growth hormone therapy in order to improve height and bone growth. Most individuals also undergo estrogen or related hormone therapy in order to regulate puberty. Regular health check-ups are particularly important for individuals with Turner syndrome in order to manage symptoms and receive tailored treatments for specific health issues that may arise. Aortic screening and routine cardiac imaging are a critical part of lifelong care for Turner syndrome patients due to the significantly higher risk of aortic dissection.

Summary

Turner syndrome is a genetic condition that can lead to significant cardiovascular complications involving the aorta, making early diagnosis and regular monitoring essential. With appropriate screening and individualized management, many of the associated risks can be reduced and long-term health outcomes can be improved. 

That’s all for today! Thank you all for reading my first blog post with Aortic Hope! 

Take care,

Anita Zahiri

Brown Medical Student