The field of atrial fibrillation is evolving rapidly. Although a medical rhythm control strategy has not proven to be beneficial for survival, new interventional therapies have improved the rate of ...

Morningstar Quantitative Ratings for Stocks are generated using an algorithm that compares companies that are not under analyst coverage to peer companies that do receive analyst-driven ratings.

Septal myectomy removes part of a thickened septum to treat hypertrophic cardiomyopathy (HCM) with left ventricular outflow tract obstruction. It can improve severe symptoms that do not respond to ...