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.

Texas hospital first to use new heart catheter device

The Texas Cardiac Arrhythmia Institute at St. David’s Medical Center in Austin, Texas, was the first facility in the country to use a new heart catheter device approved by the FDA in August.

Most patients taking warfarin do not have stable long-term INR values

During a six-month period, only 26 percent of patients taking warfarin to treat atrial fibrillation had stable international normalized ratio (INR) values, according to a registry analysis. In addition, only 34 percent of those patients continued to have stable INR values in the following year.

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AEDs are often inaccessible following out-of-hospital cardiac arrests

More communities have started to place AEDs in public locations. Still, a recent Canadian study showed those initiatives might not be enough to provide people with a better chance to survive cardiac arrests.

Registry analysis shows atrial fib patients who take dabigatran etexilate have low risk of stroke, bleeding

A registry analysis found that patients with non-valvular atrial fibrillation who received dabigatran etexilate (Pradaxa) had low rates of stroke, major bleeding and life-threatening bleeding after two years of treatment.

Updated results confirm safety, efficacy of the Micra transcatheter pacing system

After 12 months of follow-up, 96 percent of patients who received the Micra transcatheter pacing system (Medtronic) had no major complications.

Patients with nonischemic heart failure may not benefit from ICD implantation

For patients with systolic heart failure that was not caused by ischemic heart disease, implanting prophylactic implantable cardioverter-defibrillators (ICDs) did not reduce the long-term rate of death of any cause compared with patients who did not receive an ICD, according to a randomized trial.

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Inaccessibility to AEDs may hinder survival following out-of-hospital cardiac arrests

A recent retrospective, population-based cohort study in Canada showed that proximity to an AED might not always lead to using the device. More than 20 percent of out-of-hospital cardiac arrests occurred near a public AED that was inaccessible at the time of the arrest.

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Not So Far Away? Moving Remote Cardiac Implantable Electronic Device Monitoring Closer to its Full Potential

CIEDs with remote monitoring capabilities can provide a wealth of information, yet some physicians and hospitals aren’t making the most of this resource.

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.