John Ryan, MD

All posts by John Ryan, MD

May 7th, 2015

Big Data, Big Problems

Calling attention to the health data generated by today’s wearable devices, John Ryan wonders: Who ultimately owns this information and what can they do with it?

March 9th, 2015

The Coffee Conundrum – What Do You Say to Your Patient?

John Ryan presents a scenario based on a recent study’s findings that people who consume moderate amounts of coffee may be less likely to have atherosclerosis.

February 23rd, 2015

Want to Blog for CardioExchange at ACC.15?


CardioExchange is looking for members to blog at ACC.15 next month in San Diego.

February 5th, 2015

The ABIM’s Maintenance of Certification Program: What’s Next?

John Ryan reacts to the new American Board of Internal Medicine announcement about its MoC program.

January 26th, 2015

Measuring FFR During Cardiac Cath: Time to Go with the Flow?

Is fractional flow reserve being overused, underused, or neither?

January 9th, 2015

Top 10 CardioExchange Posts from 2014


The most popular stories from 2014.

November 20th, 2014

Intention to Tweet: Does Social Media Exposure Matter for Journal Articles?

Research on Circulation’s own published articles suggests that it probably does not.

November 16th, 2014

Ryan’s Rules for #AHA14

John Ryan provides some helpful hints for managing your experience at the AHA 2014 cardiology conference.

September 25th, 2014

Pulmonary Arterial Hypertension Treatment Worldwide: A Lack of Standardized Care

John Ryan discusses his new paper on heterogeneity in pulmonary arterial hypertension clinical practice worldwide. Are you surprised by the lack of standardized care?

September 18th, 2014

Fellows: Want to Blog for CardioExchange at AHA.14?


CardioExchange editors Harlan Krumholz and John Ryan are looking for fellows to blog for CardioExchange at the American Heart Association Scientific Sessions from November 15th through the 19th in Chicago. If you are interested in blogging, please contact us. We look forward to hearing from you!