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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Atul Verma, MD, head of cardiology at McGill University Health Centre

Day 3 at ACC.23 features late-breaking studies on pulsed-field ablation, other new technologies

The third and final day of ACC.23 featured a key update on Medtronic's pulsed-field ablation technology and many other late-breaking clinical studies. 

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Low BMI increases risk of cardiac tamponade during AFib ablation

Also, researchers noted, cryoballoon ablation was linked to a lower risk of cardiac tamponade than radiofrequency ablation. The study included data from nearly 60,000 hospitalizations.

A transcatheter aortic valve replacement (TAVR) procedure being performed at Intermountain Healthcare. Image from Intermountain Healthcare

10 reasons heart teams may consider SAVR over TAVR when treating aortic stenosis

As much as TAVR's popularity has grown in recent years, there are still many instances when a heart team may find that surgery offers the best path forward. 

artificial intelligence AI deep learning

AI model uses DNA to predict AFib, heart failure

Scientists were able to identify a total of 21 genes linked to cardiovascular conditions such as AFib and heart failure.

Incoming 2023-2024 American College of Cardiology (ACC) president Hadley Wilson, MD, shares insights on how to create health equity through both ACC programs and hospital grassroots community outreach programs. He outlines four programs his heart hospital is piloting in its community in Charlotte, North Carolina.

How cardiologists can address health disparities in their communities

Incoming 2023-2024 American College of Cardiology president Hadley Wilson, MD, shared insights on how to create health equity through grassroots community outreach programs.

The increased use of implantable loop recorders (ILRs) is associated with identifying more bradyarrhythmias such as bradycardia, according to new findings published in JAMA Cardiology.

Increased AFib screening improves bradyarrhythmia detection—but is it a mixed blessing?

When long-term continuous monitoring detects bradyarrhythmia in an asymptomatic patient, is it still providing value? 

Medtronic EV ICD clinical trial safety endpoints ESC Congress 2022

Medtronic’s new extravascular ICD gains key approval

Unlike other ICDs, the lead for this new-look device is placed under the patient's breastbone, outside of their heart and veins. 

4 key takeaways from ISC 2023: AFib detection, improved stroke survival and more

Leading stroke specialists from all over the world gathered in Dallas for the 2023 International Stroke Conference. Catch up on some of the biggest stories that came out of the three-day event. 

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