Catherine O’Hara Lived with Dextrocardia and Situs Inversus: What to Know
Actress and comedian Catherine O’Hara died on January 30, 2026, at the age of 71. Though family representatives haven’t publicly disclosed an official cause of death, O’Hara was known to live with a rare condition called dextrocardia with situs inversus.
What’s Dextrocardia with Situs Inversus?
Dextrocardia is a rare congenital heart defect where the heart is positioned on the right side of the chest instead of the left. The condition can cause situs inversus, which is when major organs in the chest and abdomen are positioned on the opposite side from where they usually are in the body.
Most patients with this condition — which occurs in about 1 in every 10,000 people — are unaware of it unless imaging tests are performed for unrelated reasons. It often doesn’t show any symptoms. That’s because the body’s systems still work, even when reversed. However, symptoms can occur, like chronic sinusitis, recurrent pneumonia, or fatigue. And, in some cases, dextrocardia can be associated with other congenital heart defects that may require medical attention.
Because the anatomy in situs inversus is reversed, standard diagnostic procedures or emergency care can present challenges. For example, typical signs or symptoms assessed on one side of the body may present on the other. Awareness of the condition is important in urgent care centers, emergency rooms, surgical settings, and when reviewing imaging studies like EKGs or chest X-rays.
“While the anatomy is reversed in patients with dextrocardia and situs inversus, the body typically adapts very well,” said Steven Fishberger, MD, congenital cardiologist and electrophysiologist at Jackson Health System. “The most important consideration is awareness — especially in emergency situations — so healthcare providers can interpret symptoms, imaging, and cardiac tests accurately. For most people, this condition doesn’t affect their quality of life.”
If you’d like more information on the condition, or to speak with a congenital cardiologist at Jackson Health System, you can make an appointment online by visiting https://jacksonhealth.org/request-an-appointment/.
Image: Harald Krichel, CC BY-SA 4.0, via Wikimedia Commons
