Higher heart age gap linked to rhythm problems after bypass
An observational study of 9,938 adults linked a higher computer-estimated heart age gap to rhythm problems and long-term death risk; median follow-up was 14.6 years.
Edited by Boris Djordjevic · AgingResearch.News
An observational study examined 9,938 adults who underwent coronary artery bypass surgery without another heart operation between 2000 and 2025. Their median age was 68.2 years. Researchers applied an artificial intelligence model to preoperative electrocardiograms, recordings of the heart’s electrical activity. They defined the age gap as the model’s predicted age minus the person’s actual age.
After accounting for age and sex, a higher gap was associated with postoperative atrial fibrillation, an irregular heartbeat, a need for a permanent device, and long-term death risk. It was not significantly associated with death around surgery. Atrial fibrillation occurred in 31.9%, permanent device requirement in 1.3%, and death around surgery in 1.6%. Median follow-up was 14.6 years, and 15-year cumulative mortality was 56.7%.
Why it matters
The study addressed whether the heart’s electrical activity could reflect physiological aging beyond a person’s calendar age. The authors interpreted the gap as a marker of heart aging and vulnerability to electrical problems around surgery.
Caveats
The observational design cannot establish cause and effect, and the abstract did not report how much risk changed with the age gap. The findings concern adults undergoing bypass surgery alone.
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