When Quinn was born, we learned she had a heart murmur. After being referred to a Pediatric Cardiologist in August of 2015, we learned that she had a congenital heart condition called Pulmonary Valve Stenosis. This restricts blood flow to the lungs caused by a narrowing of the valve. The Cardiologist also mentioned that she thought Quinn might have something called Noonan Syndrome which can be diagnosed through genetic testing. In March, 2016 Quinn went through a balloon catheterization procedure to try to stretch the valve open so it worked properly, at this same time we pursued genetic testing. The balloon catheterization decreased the gradient in her heart by 20%, but was not enough to give her lasting relief.
Quinn was diagnosed with Noonan Syndrome in April, 2016. She was found to have a mutation of the PTPN11 gene which is the most common form of Noonan Syndrome. (Noonan Syndrome is usually hereditary, but can be caused by a random gene mutation) Noonan Syndrome affects many areas of the body, including a common finding of Pulmonary Valve Stenosis. Typically, it is characterized by mildly unusual facial characteristics, short stature, heart defects, bleeding problems, skeletal malformations, and other signs and symptoms. There is no way to know which problems Quinn will have associated with Noonan Syndrome, it can be very minor, or more severe. There are numerous things they will check throughout her lifetime, but no way to predict the future. A good website with information about Noonan Syndrome is http://www.teamnoonan.org.
Blood testing shows that Quinn may have bleeding issues due to a mild coagulation Factor VII deficiency and Low von Willeband Factor activity. These both affect how her blood clots and might cause excessive bleeding, these are both common findings in people with Noonan Syndrome. Nothing has been diagnosed regarding bleeding disorders as one blood test can’t be definitive. However, the Pediatric Hematologist on her case has plans in place should anything occur during her open heart surgery.
The plan for Quinn is for Open Heart Surgery, her team of Cardiologists believe this is the time to do it so she can have the fullest quality of life as she starts to grow. The wait and see approach has shown no improvement in her heart as she gets bigger with the gradient being around 79 (this is diagnosed as moderate severe pulmonary stenosis and right ventricular hypertrophy) The effects of her heart defect right now are tiring easily, and some minor blue spells, she is also slightly behind in her gross motor skills. Overall, she is a very happy, healthy baby and brings great joy to our lives.