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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Readmissions common, costly after ablation of MI-associated VT

Almost 1 in 5 patients are rehospitalized within 30 days of undergoing catheter ablation of MI-associated ventricular tachycardia (VT), according to a study from the Nationwide Readmissions Database. These patients rack up 38.9 percent higher cumulative hospital costs than those who aren’t readmitted, researchers reported in Circulation: Arrhythmia and Electrophysiology.

Digoxin concentration linked to platelet activation in AFib patients

Monitoring digoxin concentration and platelet activation in atrial fibrillation (AF) patients treated with vitamin K antagonists could be important for reducing those patients’ inherently elevated risk for CVD, according to a study published in the Journal of the American Heart Association Nov. 15.

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Johns Hopkins marries cardiology, engineering in $5.5M ADVANCE center

Half a decade of planning and millions of dollars have culminated in the Alliance for Cardiovascular Diagnostic and Treatment Innovation (ADVANCE), a joint engineering and cardiology center launched by Johns Hopkins University in an attempt to improve the diagnosis and treatment of a range of arrhythmia disorders.

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Risk factors fail to explain higher rates of sudden cardiac death in blacks

Even after adjusting for cardiovascular, behavioral and socioeconomic factors, black adults remain twice as likely to die from sudden cardiac death (SCD) as whites, suggests a study published in the Journal of the American College of Cardiology.

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Competitive sports appear safe for young athletes with ICDs

There were no serious adverse events related to competition in a study of 129 young athletes with implantable cardioverter defibrillators (ICDs), providing reassurance that moderate-to-intense physical activity in this population may be safer than previously thought.

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Study: Depressed patients see up to 7-fold higher risk for AFib

Individuals with clinical depression could face a more than seven-fold increased risk of atrial fibrillation (AF), especially in the earliest stages of their diagnosis, a population study out of Denmark suggests.

Severe migraines could signal elevated risk for AFib, stroke

A decades-long study of patients who have migraines with visual aura has linked the painful headaches to an increased risk of experiencing atrial fibrillation and, to a lesser degree, stroke, researchers report in the online edition of Neurology.

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Study shows discord between AFib patients, physicians in anticoagulant prescribing

When approached again, about a quarter of patients with atrial fibrillation (AFib) not taking anticoagulants due to physician-cited “patient refusal” said they would consider taking the drugs, according to preliminary research presented at the American Heart Association’s Scientific Sessions in Chicago.

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.