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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Algorithm optimizes catheter ablation in AFib patients

Researchers at Florida Atlantic University’s College of Engineering and Computer Science have developed an algorithm that can identify precise internal targets for ablation in atrial fibrillation patients—the first, they say, that can do so without the help of specialized catheters or 3D electroanatomic mapping.

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Grapefruit juice prolongs patients’ QT interval

A high intake of grapefruit juice—and other dietary flavonoids found in fruits, vegetables, tea and wine—could correspond to QT interval prolongation in healthy individuals and those with heart disease, leaving them vulnerable to serious arrhythmias like torsades-de-pointes.

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ICDs are underused in clinical practice—especially in women and minorities

A trio of studies presented at the Heart Rhythm Society’s 40th annual scientific sessions earlier this month highlight significant disparities in patient access to implantable cardiac devices—particularly in women and black patients.

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Azithromycin ‘Z-packs’ tied to potentially fatal arrhythmia

The FDA is updating azithromycin drug labels to reflect evidence that the medication can contribute to a rare heart rhythm abnormality known as torsades de pointes.

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HRS releases consensus statement on arrhythmogenic cardiomyopathy: 5 things to know

The Heart Rhythm Society issued a first-ever consensus statement on the evaluation, risk stratification and management of arrhythmogenic cardiomyopathy at its annual conference in San Francisco this spring.

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Researchers developing AI-powered ‘smart ring’ to detect AFib

South Korean researchers are working on packing the ability to monitor heart health and detect signs of atrial fibrillation into what might be the smallest cardiology wearable to date: a “smart ring.”

BioCardia receives clearance for AVANCE steerable catheter introducers

BioCardia’s AVANCE steerable introducer family has received FDA 510(k) clearance, the company announced May 8.

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Study reveals patients don’t know much about their heart implants—but they want to

Research presented at the Heart Rhythm Society’s 40th annual scientific sessions in San Francisco May 7 suggests heart patients with implanted electronic devices know less about their therapies than they think they do.

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.