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.

AI uses x-rays to ID cardiac rhythm device manufacturer with 99.6% accuracy

A new AI software can quickly and accurately determine the manufacturer and model of a cardiac rhythm device from an x-ray, possibly speeding up treatment when the devices fail.

Antibiotic-eluting envelop reduces risk of CIED infections by 40%

A mesh envelope embedded with antibiotics cut the risk of major device-related infections by 40 percent when placed around cardiac implantable electronic devices (CIEDs) like pacemakers and defibrillators, researchers reported in the New England Journal of Medicine.

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Simplified AFib ablation saves time, money without sacrificing quality

A catheter ablation protocol for atrial fibrillation (AFib) including only “the bare essentials” of the procedure delivered similar outcomes as a more involved strategy featuring pulmonary vein mapping, according to research presented at EHRA 2019.

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Apixaban, clopidogrel a safe combo for ACS patients with AFib

NEW ORLEANS — An antithrombotic regimen of apixaban plus a P2Y12 inhibitor such as clopidogrel lowered bleeding events and hospitalizations compared to warfarin plus clopidogrel in a cohort of patients with atrial fibrillation (AFib) and a recent acute coronary syndrome (ACS), according to results of the AUGUSTUS trial.

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Critics concerned FDA is playing cheerleader during Apple’s health push

The Apple Watch’s FDA-cleared electrocardiogram (ECG) feature has already helped some people uncover undiagnosed atrial fibrillation, leading to necessary medical treatment. But cardiologists fear false positives may be the more common occurrence in low-risk individuals, potentially leading to unnecessary testing and emotional strain in those users, according to Politico.

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Consistent with ‘obesity paradox,’ overweight AF patients see lower odds of death, stroke

A study published Feb. 14 in the American Journal of Cardiology suggests obese patients with atrial fibrillation (AF) fare better in terms of mortality and stroke events than their non-obese counterparts—a finding that’s in line with the much-contested “obesity paradox."

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Black patients see lower AFib risk with ICDs than whites

Black Medicare beneficiaries with implanted cardiac devices (ICDs) face a lower risk of atrial fibrillation (AF) than their white counterparts, despite a higher overall burden of vascular risk factors and a greater risk of stroke, researchers reported Feb. 11 in the Journal of the American Heart Association.

His-optimized CRT improves electrical resynchronization in advanced HF patients

His-optimized cardiac resynchronization therapy successfully narrowed QRS duration, improved left ventricular (LV) ejection fraction and heightened functionality in 27 patients with advanced heart failure (HF), according to a study published in Circulation: Arrhythmia and Electrophysiology.

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.