Fifteen of the list's top 25 hospitals are located in the United States. 

Giving a 'clinician team roster' to patients is an easy way to make a big impact, researchers found. 

Facilities with dedicated shock teams delivered shorter lengths of stay and a lower mortality rate. 

The pandemic also seems to have led to many older physicians leaving their jobs altogether. 

As recently as the early 2000s, cardiologists were performing a significant amount of cardiac imaging exams in their offices. 

“Effective communication between the clinician and the pharmacy is paramount to ensuring patients only receive medications they require,” one researcher said.

Each chapter of the new book is modeled after a real-life patient encounter, starting with the initial visit and then taking readers through the entire process.  

Text-based reminders, simplified prescriptions and real-time counseling are just some of the suggestions mentioned in a new scientific statement from the American Heart Association. 

Early counseling should be stressed for women with congenital heart defects, according to the analysis.