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.

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Ablation of AFib likely to occur later, be less successful in women

Women who received catheter ablation in the FIRE AND ICE trial were 37 percent more likely than men to have a recurrence of atrial arrhythmia and 36 percent more likely to be rehospitalized for cardiovascular causes, according to an analysis published April 26 in Circulation: Arrhythmia and Electrophysiology.

May 16, 2018

Watchman thrombi occur in 3.7% of implants, heighten stroke risk

Watchman-related thrombi developed in 3.7 percent of patients who were implanted with the device, resulting in a threefold risk of stroke or systemic embolism, according to a meta-analysis of clinical trials and registries published online May 11 in Circulation.

May 15, 2018
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Medtronic shows feasibility of extravascular ICD; in-human study next

A novel device placed under the sternum outside of the heart and veins has the potential to deliver pacing and defibrillation therapy, according to a feasibility study presented at the Heart Rhythm Society’s annual scientific sessions.

May 14, 2018

Sensing filter cuts inappropriate shocks for S-ICDs by more than 50%

A sensing filter added to Boston Scientific’s Emblem subcutaneous implantable cardioverter defibrillators (S-ICDs) more than halved the number of inappropriate shocks given to patients over a one-year period, according to a real-world European study presented May 11 at the Heart Rhythm Society’s annual scientific sessions in Boston.

May 14, 2018

New Study Demonstrates Feasibility of Novel Mechanical Sensor in Medtronic Micra Transcatheter Pacing System to Detect Atrial Contractions and Restore AV Synchrony

DUBLIN and BOSTON — May 11, 2018 — Medtronic plc (NYSE:MDT) today announced new clinical study results demonstrating that an investigational algorithm, utilizing the accelerometer signal in the Micra(TM) Transcatheter Pacing System (TPS) may restore AV synchrony, improving cardiac function in patients with sinus rhythm and atrioventricular (AV) block.

May 14, 2018
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Challenge for a bold new ablation therapy: Living up to the hype

Physicians and patients have long awaited the next step beyond catheter ablation for ventricular tachycardia (VT). Could noninvasive stereotactic body radiation be that
breakthrough?

May 13, 2018

Patients with ‘resolved’ AFib maintain elevated stroke risk

Atrial fibrillation (AFib) should never be considered fully cured, according to a recent study in The BMJ, because patients with this designation carry higher risks of stroke and death compared to people who have never had the arrhythmia.

May 11, 2018

AFib ablation outperforms drugs in CABANA trial

Catheter ablation was found to be superior to optimal drug therapy for the primary treatment of atrial fibrillation (AFib) in the randomized CABANA trial presented May 10 at the Heart Rhythm Society’s annual scientific sessions in Boston. However, there was a caveat.

May 11, 2018
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