What Seattle Children’s Measures and Why

At Seattle Children’s Heart Center, our outcomes are among the best in the nation for simple to complex heart procedures and transplants for children. Our heart surgeons perform more pediatric cardiac procedures than any other providers in the Washington, Wyoming, Alaska, Montana and Idaho (WWAMI) region.

“Outcomes” refers to the results of treatment and evaluate how effective care is. We also provide statistics such as the number of surgeries performed or patients seen (volumes).

We gather this data to:

  • Measure the health of our patients
  • Improve the quality of the care we provide
  • Help you make informed decisions about your child’s care

Learn more about outcomes at Seattle Children’s.

Heart Center Volumes and Survival Rates

We treat the entire range of pediatric heart conditions – from the most common to the most complex and rare. We only treat babies, children, teens and young adults. This means we bring years of experience to your child’s unique situation.

Seattle Children’s Heart Center is the largest pediatric heart program in the WWAMI region and the third-largest program west of the Rocky Mountains.

Total number of Heart Center surgeries by fiscal year

This chart shows that the Heart Center team performed 571 surgeries in 2014. Read more about Seattle Children’s Heart Surgery Program.

Heart Surgical Volumes

Procedure volumes and 30-day survival rates

The Heart Center team performed 571 surgeries in 2014. This table shows:

  • The number of complex heart surgeries performed at Seattle Children’s Hospital.
  • The number of patients who survived more than 30 days after surgery. “30-day survival” is the measurement for success used by hospitals throughout the nation. Using this measurement allows you to compare us with other hospitals.
2014 2013 2012
Volume Survival Rate Volume Survival Rate Volume Survival Rate
Arterial switch (transposition of the great arteries) 13 100% 12 92% 18 100%
Atrial septal defect (ASD) repair   17 100% 20 100% 16 100%
AV canal repair   19 100% 17 100% 23 100%
Right ventricle to pulmonary artery conduit and pulmonary valve insertion 16 100% 6 100% 10 100%
Single ventricle defect–related surgeries:



     Fontan procedure
12 83% 16 94% 12 92%
16 100% 20 95% 10 100%
24 96% 12 100% 13 100%
Tetralogy of Fallot repair 11 100% 25 100% 18 100%
Total anomalous pulmonary venous return repair   7 86% 8 100% 5 100%
Truncus arteriosus repair 2 100% 1 100% 2 100%
Valve repair and replacement (mitral/aortic) 19 100% 14 100% 12 100%
Ventricular septal defect (VSD) repair   31 100% 44 100% 36 97%

Cardiac catheterization lab volumes

In 2014, we completed 618 procedures in the cardiac catheterization labs at Seattle Children’s. Our catheterization laboratory is the largest of its kind in the region. Read more about cardiac catheterization at Seattle Children’s.

Heart Transplant Volumes and Survival Rates

Heart transplant volumes

In 2014, we completed 17 transplants.

Heart Transplant Volumes

Heart transplant survival rates

We have one of the highest 3-year patient survival rates among pediatric heart transplant centers in the country, as reported to the United Network of Organ Sharing (UNOS). We also have one of the best records for keeping kids and teens with failing hearts alive while they wait for a donor heart (low waitlist mortality rate). Read more about why Seattle Children’s leads the nation in heart transplant survival rates.

  1 Month 1 Year 3 Year
Seattle Children’s 100.00% 94.74% 92.31%
National average 97.25% 92.47% 85.87%

This data is for surgeries performed in the following periods:

  • 1 month survival: July 1, 2011 to Dec. 31, 2013
  • 1 year survival: July 1, 2011 to Dec. 31, 2013
  • 3 year survival: Jan. 1, 2009 to June 30, 2011

Where does your data come from?

This data reflects national metrics reported to the National Quality Forum, the Society of Thoracic Surgeons (STS) and the Scientific Registry of Transplant Recipients.

Who do I contact if I have questions?

Talk with your child’s doctor or contact the Heart Center at 206-987-2015.