Heart Rhythm

Hearts should have normal rhythm to their beats, but when these beats are out of synch, it causes inefficient pumping of blood. Irregular heart arrhythmias occur when the electrical signals that coordinate the heart's beats do not work properly. This can cause beats that are too fast (tachycardia), or too slow (bradycardia). Tachycardias include atrial fibrillation (AFib), supraventricular tachycardia, ventricular fibrillation, and ventricular tachycardia (VT). Bradycardias include sick sinus syndrome and conduction block. Electrophysiology arrhythmia treatments include medications, life style changes, and the EP lab interventions of catheter ablation, and implantable pacemakers or defibrillators.

Thumbnail

FitBit data reveal major differences in average resting HR

A recent analysis of FitBit data suggests there is no one “normal” resting heart rate for humans, with users’ average HR coming in at between 40 and 109 beats per minute, Discover Magazine reported.

Thumbnail

Medtronic receives CE mark approval for next-gen ICDs, CRT-Ds

Medtronic has received CE mark approval in the European Union for its Cobalt and Crome implantable cardioverter-defibrillators and cardiac resynchronization therapy-defibrillators.

Thumbnail

Experts dispute 9 of 17 genes once linked to long QT syndrome

A panel of experts from the Clinical Genome Resource are publicly disputing nine of 17 genes once thought to be linked to long QT syndrome.

Thumbnail

AI to help ID cardiac arrest from emergency phone calls

Emergency phone operators in Victoria, Australia, may soon have access to AI that could alert them to callers in cardiac arrest, ZDNet reports.

Thumbnail

FDA OKs study of tech that uses pulsed electric fields to treat AFib

The FDA has approved a Medtronic-run trial, PULSED AF, to evaluate the safety and efficacy of new tech that uses pulsed electric fields to treat AFib.

Thumbnail

Burnout boosts likelihood of atrial fibrillation

Burnout may increase a person’s risk of developing atrial fibrillation by as much as 20%, researchers reported this month in the European Journal of Preventive Cardiology.

Thumbnail

FDA approves world’s smallest pacemaker with AV synchrony

Medtronic announced Jan. 21 it had received FDA approval for its Micra AV device—the world’s smallest pacemaker with atrioventricular synchrony.

Thumbnail

Mechanical hyperventilation could streamline cardiac ablation

A medical technique that involves safely hyperventilating conscious, unmedicated patients could facilitate the use of radiotherapy for cardiac ablation, according to research published in Frontiers in Physiology