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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Gasping during cardiac arrest linked to improved survival, brain function

Gasping during cardiac arrest was associated with a nearly four-fold increase of one-year survival with favorable brain function, according to a study of 1,888 out-of-hospital cardiac arrests.

AFib patients with diabetes have higher risk of death—but not bleeding events

Diabetic patients with atrial fibrillation (AFib) have a lower quality of life and are at increased risk of death and hospitalization. However, they are no more likely than other AFib patients to have thromboembolic or bleeding events, despite a higher frequency of anticoagulation therapy, according to new research.

Ablation reverses LVSD in patients with persistent AFib

Catheter ablation (CA) is an effective way to restore sinus rhythm and reverse left ventricular systolic dysfunction (LVSD) in patients with persistent atrial fibrillation (AFib), according to new research.

Survival of cardiac arrest tied to neighborhood racial demographics

Cardiac arrest suffered in predominately black neighborhoods is associated with worse rates of survival and bystander treatment, despite quicker emergency medical services (EMS) response times, according to a new study in JAMA Cardiology.

Abbott releases software patch for pacemakers with cybersecurity vulnerability

Abbot Laboratories released a software update Aug. 23 for pacemaker and CRT-P devices. The Food & Drug Administration released a recommendation for patients to visit their healthcare providers to discuss vulnerability and updates.

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Ablation tops drugs in treatment of AFib

Ablation led to greater quality of life improvements than drugs in patients with atrial fibrillation (AFib), according to results presented Aug. 29 at the European Society of Cardiology Congress.

Electrical, mechanical activation of left ventricle strongly correlated

A close relationship exists between the timing of left ventricular (LV) electrical activation and peak contraction in dyssynchronous heart failure patients, according to a new study.

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Man vs. machine: A fair match when it comes to cardiac ablation

Whether guided by robotic navigation (RN) or the hands of a physician, catheter ablations demonstrated comparable results in a study of 258 patients treated for atrial fibrillation (AFib). 

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.