# John Ritter's widow details fatal misdiagnosis

> John Ritter's widow explains how his heart attack misdiagnosis led to death.
- Title: John Ritter's widow details fatal misdiagnosis · Fox News
- Summary: John Ritter's widow explains how his heart attack misdiagnosis led to death. John Ritter died from aortic dissection after being misdiagnosed with a heart…
- Keywords: amy yasbeck, john ritter, aortic dissection, three's company, john ritter foundation, thoracic aortic aneurysm, blood pressure, family medical history, screening, aortic health, news, politics
- Source: Fox News — https://foxnews.com/entertainment/john-ritters-widow-amy-yasbeck-details-fatal-misdiagnosis-she-says-led-his-death
- Author: Ashley Hume
- Published: 2026-09-18T00:00:00+00:00
- Read time: 1 min
- Topics: amy yasbeck, john ritter, aortic dissection, three's company, john ritter foundation, thoracic aortic aneurysm, blood pressure, family medical history, screening, aortic health, news, politics
## John Ritter's death
John Ritter died at age 54 in September 2003 after suffering an acute aortic dissection.
## Misdiagnosis
Yasbeck said Ritter was mistakenly treated for a heart attack before dying of aortic dissection.
## No imaging
Doctors did not order imaging for Ritter despite his symptoms, leading to delayed treatment.
## Wrong treatment
Ritter received blood thinners instead of emergency aortic repair, worsening his condition.
## Wrong diagnosis
Yasbeck explained Ritter's death was caused by a tear in his aorta, not a heart block.
## Wrong treatment
Ritter's treatment with blood thinners increased the risk of aortic dissection progression.
## Wrong diagnosis
Yasbeck said doctors failed to recognize aortic dissection as the cause of Ritter's symptoms.
## Wrong treatment
Ritter's blood thinners worsened his aortic dissection, leading to death.
## Wrong diagnosis
Yasbeck said Ritter's death was due to a tear in his aorta, not a heart block.
## Wrong treatment
Ritter received blood thinners instead of emergency aortic repair, worsening his condition.
## Family impact
Ritter's widow and children now advocate for aortic health awareness through the John Ritter Foundation.
## Genetic risk
Ritter's family has a genetic risk for aortic dissection, with his father and brother also affected.
## Screening
Ritter's son Tyler now undergoes annual screenings for aortic dissection due to family history.
## Legacy
Ritter's death has raised awareness of aortic dissection, saving lives through early detection.
## Key takeaway

John Ritter died from aortic dissection after being misdiagnosed with a heart attack, prompting his widow to advocate for awareness.