PFO Detection with TCD for Cryptogenic Stroke

August 30, 2023
Webinar thumbnail


This webinar highlights a recently published study that evaluated 200 patients who received a newly implemented robot-assisted transcranial doppler with bubble injection. It was used to find right-to-left shunts (RLS) as a potential cause of stroke in young patients, as defined by age <65.


  • Explain PFO as a mechanism for stroke in the young
  • Compare the sensitivities of the methods of detection
  • Review the grading scale to quantify PFO size using TCD
  • Review treatment options, and PFO management

About the Presenter

Ira Chang, MD is the Director of Neurocritical Care at Swedish Medical Center in Denver, Colorado, where she moved after finishing a neurology residency at Columbia Presbyterian Hospital in New York City. She founded one of the first dedicated inpatient neurology practices in the country in 2005 and has written a book chapter in the Neurohospitalist text book on the “Structure and Organization of Neurohospitalist Practices.”

She also is a senior partner in Blue Sky Telehealth. Dr. Chang is also Board Certified in Neurocritical Care and established the 18-bed Neuro ICU at Swedish Medical Center, a comprehensive stroke and level I trauma center in Denver.

She has served on the MEC for 17 years, ending her term as President of the HealthOne Division President’s Council, which includes five other hospitals in Denver, and is now Chair of the Neuroscience Governance Council, which coordinates strategic growth efforts across these same hospitals. Dr. Chang is soon to be an empty nester with her youngest of two children leaving for college soon. She enjoys competing on a local tennis team, as well as skiing and traveling.

CME Information:

This activity has been approved for AMA PRA Category 1 Credit(s)TM.

  • Release Date: 8/31/23
  • Expiration Date: 8/31/24
  • Estimated time to complete this activity is 1 hour.