Children's Hospital Colorado

Interrupted Aortic Arch (IAA)

We see more, treat more and heal more kids than any other hospital in the region.

Best Children's Hospital by U.S. News & World Report Cardiology 2021-2 Badge

Get Care

Would you like to learn more about us?
Heart Institute
Ready to schedule an appointment?
Schedule online
Do you have questions about your child’s condition?

Interrupted aortic arch (IAA) is the absence of a section of the aorta, which is the main blood vessel supplying blood to the body.

Types of IAA

There are 3 types of IAA and they are classified according to the location of arch interruption. All 3 types of IAA are serious and heart surgery is required in the newborn period to correct this defect.

What causes an interrupted aortic arch?

IAA is believed to result from poor development of the aortic arch system very early in pregnancy.

Complications caused by IAA

Babies with IAA almost always have a large ventricular septal defect (VSD) as well. They are also at increased risk for a chromosomal abnormality called 22q11 deletion syndrome.

Next steps

Cartoon image of a patient and doctor having a telehealth call.

Compassionate care, wherever you are

We’re here when you need us. Telehealth appointments are available across every specialty, so you can get the high-quality care we’ve always offered from the comfort, privacy and convenience of home.

See if telehealth is right for you


Get to know our pediatric experts.

Alison Dumond, CPNP-AC/PC

Alison Dumond, CPNP-AC/PC

Certified Pediatric Nurse Practitioner, Certified Pediatric Nurse Practitioner

Farhouch Berdjis, MD

Farhouch Berdjis, MD

Cardiology - Pediatric

Max Mitchell, MD

Max Mitchell, MD

Cardiac Surgery, Thoracic Surgery

Patient ratings and reviews are not available Why?

Richard Friesen, MD

Richard Friesen, MD

Cardiology - Pediatric, Pediatrics