Statistics and Outcomes
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.
What Seattle Children’s measures and why
"Outcomes” refer to the results of treatment and evaluate how effective care is. We also provide statistics such as the number of 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
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.
Total number of heart surgeries, 2017 to 2021
Total number (volume) of Heart Center surgeries by fiscal year
This chart shows that the Heart Center team performed 531 surgeries in 2021. Read more about Seattle Children’s Heart Surgery Program.
Number of surgeries and 30-day survival rate
This table shows:
- The number (volume) of each type of complex heart surgery performed at Seattle Children’s Hospital
- The number of patients who survived more than 30 days after surgery (outcome). “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.
- These data are for procedures performed from Oct. 1, 2020 through Sept. 30, 2021.
Arterial switch (transposition of the great arteries)22Number of surgeries100%30-day survival rate
Atrial septal defect (ASD) repair12Number of surgeries100%30-day survival rate
AV canal repair26Number of surgeries100%30-day survival rate
Right ventricle to pulmonary artery conduit and pulmonary valve insertion12Number of surgeries100%30-day survival rate
Single ventricle defect-related surgeries
Norwood16Number of surgeries93.8%30-day survival rate
Fontan22Number of surgeries100%30-day survival rate
Glenn23Number of surgeries100%30-day survival rate
Tetralogy of Fallot repair16Number of surgeries100%30-day survival rate
Total anomalous pulmonary venous return repair5Number of surgeries80%30-day survival rate
Valve repair and replacement (mitral/aortic)21Numbers of surgeries95.3%30-day survival rate
Ventricular septal defect (VSD) repair52Number of surgeries100%30-day survival rate
Cardiac catheterization lab volume, 2021
In 2021, we completed 746 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
Total number of heart transplants, October 1994 to June 2021
Heart transplant volumes by year, 2017 to 2021
This chart shows that the Heart Center team performed 21 transplants in 2021. Read more about Seattle Children’s Heart Transplant Program.
Pediatric heart transplant survival rates
This table compares survival rates at Seattle Children’s with the national average for pediatric patients. Pediatric patients are children who are not yet 18 years old when they are put on the transplant waitlist.
One-year patient survival96.3%Seattle Children’s 1-year patient survival91.57%National average 1-year patient survival39Number of patients evaluated at Seattle Children’s
One-year graft survival96.4%Seattle Children’s 1-year graft survival91.79%National average 1-year graft survival42Number of transplants evaluated at Seattle Children’s
Three-year patient survival97.14%Seattle Children’s 3-year patient survival86.81%National average 3-year patient survival30Number of patients evaluated at Seattle Children’s
Three-year graft survival97.50%Seattle Children’s 3-year graft survival86.34%National average 3-year graft survival35Number of transplants evaluated at Seattle Children’s
These data are for transplants performed in the following periods:
- 1-year survival: June 13, 2020 to June 30, 2021
- 3-year survival: Jan. 1, 2016 to June 30, 2018
Transplant data updated July 2022.
Next SRTR update: January 2023
Prenatal Diagnosis Volumes and Accuracy
This table shows the number of prenatal heart exams we did in each of the previous 3 years. It also shows how accurate we are in making the diagnosis during pregnancy. Some things cannot be detected before birth due to the differences between blood circulation during pregnancy and after birth.
Where does this information come from?
These statistics and outcomes reflect 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?
Updated September 2022.