Three college buddies have big plans for a 21st century upgrade to the traditional stethoscope. Tyler Crouch and two classmates from the University of California, Berkeley have Eko Devices, a company that has raised nearly $5 million and sold 6,000 digital stethoscopes.

Complex fractionated atrial electrograms (CFAE) ablations and continuous electrical activity (CEA) ablations have been proposed or the treatment of persistent atrial fibrillation (AFib). But a new study suggests targeting bipolar electrograms with less fractionation. According to the researchers, these may be better targets because they are more likely to be focal electrical sources.

A new study identifies two backup mechanisms that support the sinoatrial node (SAN) in its tireless task of efficiently keeping the heart beating even under adverse circumstances and in the face of arrhythmias.

A mathematical method to measure electrical communications within the heart has been shown to be useful in predicting the effectiveness of catheter ablation.

In a collaboration between digital healthcare company iRhythm and the Stanford Machine Learning Group (SMLG), an algorithm has been developed to detect 14 different cardiac output classes, including 12 arrhythmias.

Living near an airport may make for a quick commute when getting out of town, but that convenience may come at a cost. New research suggests such an environment, with long-term exposure to aircraft noise throughout the day, may increase risk of hypertension, heart flutter and stroke.

In recent years, automated external defibrillators (AEDs) have become more common in public spaces such as movie theaters, shopping malls and restaurants. But survival rates for out-of-hospital cardiac arrest remain between 8 and 10 percent. Three researchers in Sweden have a new way to hasten defibrillation for those in need: drones.

Researchers from Rice University and the Texas Heart Institute are introducing a wireless pacemaker that can be implanted directly into a patient’s heart at this week's IEEE’s International Microwave Symposium in Honolulu, running through June 9.