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.

FDA approves catheter for AF ablation

The FDA approved a therapeutic catheter that can be used to measure contact force during cardiac ablation.

Report says less favorable Pradaxa data withheld from FDA

Bloomberg News reported that Boehringer Ingelheim provided the FDA with one analysis showing a lower rate of fatal bleeding events in patients treated with dabigatran (Pradaxa) than was found in a second analysis that the company chose not to share.

Medtronic enrolls first U.S. patient in global clinical trial for miniature transcatheter pacemaker system

Continuing its leadership in advanced pacing technology and device miniaturization, Medtronic, Inc. (NYSE: MDT), today announced the first U.S. implant of the world's smallest pacemaker: the Micra(tm) Transcatheter Pacing System (TPS). The device was successfully implanted at NYU Langone Medical Center by Larry Chinitz, M.D., director of the Heart Rhythm Center at NYU Langone Medical Center in New York City, as part of the Medtronic global pivotal clinical trial. The Micra TPS is an investigational device worldwide.

UAB cardiologists implant subcutaneous defibrillator in first Alabama patient

Fourteen-year-old Monroeville, Ala., teenager Christian Quarles is the first state resident to receive the Boston Scientific S-ICD® System, the world’s first and only commercially available subcutaneous implantable defibrillator for the treatment of patients at risk for sudden cardiac arrest.

Temporarily stopping anticoagulation with AF common but risky

Temporarily interrupting anticoagulation therapy in patients with atrial fibrillation (AF) is common and may carry considerable risk for bleeding and strokes, regardless of whether they are treated with rivaroxaban or warfarin, a study published online Feb. 19 in Circulation found. 

Texas Cardiac Arrhythmia Institute at St. David’s Medical Center to host EP Live 2014

The Texas Cardiac Arrhythmia Institute (TCAI) at St. David’s Medical Center will host EP Live—a two-day, intensive educational meeting targeting practicing electrophysiologists from across the globe, electrophysiology (EP) fellows in training, general cardiologists, cardiac surgeons with an interest in treating complex arrhythmias and primary care physicians. The meeting consists of four sections: atrial fibrillation ablation, ventricular tachycardia ablation, devices and new technologies. 

RAAFT-2 favors ablation over drugs but highlights risks

Radiofrequency ablation appears to have a leg up on standard therapy for treating patients with paroxysmal atrial fibrillation (AF), based on results of the RAAFT-2 trial published in the Feb. 19 issue of JAMA. But both treatments had a high recurrence rate and ablation was far from risk-free.

Dronedarone guidelines may be short on evidence

Clinical practice guidelines involving dronedarone, a drug used to control arrhythmias in patients with atrial fibrillation, may not be based on the best available evidence, a special communication published online Feb. 17 in JAMA Internal Medicine found.

Around the web

Ron Blankstein, MD, professor of radiology, Harvard Medical School, explains the use of artificial intelligence to detect heart disease in non-cardiac CT exams.

Eleven medical societies have signed on to a consensus statement aimed at standardizing imaging for suspected cardiovascular infections.

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