Reduced ER Visits by Half After Apple Watch Post-AFib Ablation Study

The Apple Watch has gained popularity for various reasons, including its ability to detect undiagnosed atrial fibrillation (Afib) through its electrocardiogram (ECG) feature. A recent study has shown that the Apple Watch is also effective in detecting issues and providing reassurance to patients who have been treated for atrial fibrillation.

A study published in the Journal of the American College of Cardiology conducted by researchers from St Bartholomew’s Hospital in London explored the performance of the Apple Watch in patients who have been diagnosed and treated for Afib.

This study builds upon previous research from Amsterdam University Medical Center, which highlighted the Apple Watch’s efficacy in screening for undiagnosed Afib. However, the St Bartholomew’s trial goes further by demonstrating that the watch can reduce unplanned hospitalizations by up to 50%.

Monitoring Post-Surgery Recovery

In this latest trial, researchers focused on patients who had undergone an atrial fibrillation catheter ablation, a minimally invasive procedure that can restore normal heart rhythm by creating small scars in the heart tissue through freezing or heating.

The study monitored 168 patients divided into two groups. The first group was provided with an Apple Watch Series 5 and instructed to follow a high-frequency monitoring protocol, including regular daily ECG readings and additional readings as prompted by the watch. The control group did not receive an Apple Watch and only had clinical appointments with a cardiology specialist.

Faster Detection, Better Outcomes

The results showed that patients wearing the Apple Watch had a higher likelihood of detecting recurring atrial fibrillation. On average, the Apple Watch group detected recurrences in 116 days, which was over two weeks faster than the control group’s average of 132 days.

The Apple Watch group also had a higher rate of detecting recurring atrial fibrillation, with 52.9% of the group being alerted to the issue compared to 34.9% in the control group. The study noted that the results were driven by more cases of paroxysmal AF.

Reducing the Burden on Hospitals

Significantly, unplanned hospitalizations were lower in the Apple Watch-wearing group, with only 22 patients requiring unscheduled hospitalization compared to 47 in the control group. The reduced hospitalizations were attributed to the immediate patient-facing diagnosis provided by the Apple Watch, which likely resulted in fewer people seeking emergency care for benign arrhythmias mistaken for atrial fibrillation.

The Apple Watch-based monitoring not only reduced the time to recurrent arrhythmia detection and increased overall detection yield but also led to fewer unplanned hospitalizations compared to standard care. The researchers concluded that these findings support the integration of patient-owned wearable devices into postablation follow-up pathways.

If you’re a regular reader of iDrop News, you’re likely familiar with the Apple Watch’s ECG feature and its role in early detection of atrial fibrillation and other health issues. Apple continues to enhance the health monitoring features of the Apple Watch, with several clinical trials demonstrating their value.