ESVEA was significantly associated with new-onset ischemic stroke (HR:2.798; 95% CI:1.064 to 7.359; p=0.037) and all-cause mortality (HR:7.584; 95% CI:1.302 to 44.163; p=0.024) in Asian subjects without prior stroke or atrial fibrillation.
ESVEA was significantly associated with increased risk of new-onset ischemic stroke in patients without prior stroke or atrial fibrillation.
ESVEA was significantly associated with increased all-cause mortality.
New-onset ischemic stroke rates showed a stepwise increase across ESVEA severity categories.
ESVEA was defined using a data-driven threshold based on the top 15% of the cohort's 24-hour ambulatory ECG results.
No significant interaction was observed between age groups for the effect of ESVEA on new-onset ischemic stroke in subgroup analysis.
The study characterized ESVEA as a marker of both paroxysmal atrial fibrillation and underlying atrial cardiomyopathy that may serve as an earlier electrographic predictor of cryptogenic ischemic stroke than paroxysmal AF itself.
This research suggests that a heart rhythm pattern called excessive supraventricular ectopic activity (ESVEA) — which refers to an unusually high number of extra heartbeats originating in the upper chambers of the heart — is associated with a significantly higher risk of stroke and death. The study followed 446 patients in China who had no prior history of stroke or atrial fibrillation for a median of 13 months. Patients whose 24-hour heart monitor recordings showed at least 100 extra beats per day or at least 22 brief episodes of rapid heart rhythm were classified as having ESVEA. These patients were nearly three times more likely to experience a new stroke and more than seven times more likely to die from any cause compared to patients without ESVEA. A particularly striking finding was the stepwise increase in stroke rates across three groups: patients with no extra beats had a 0.70% stroke rate, those with some extra beats that did not fully meet ESVEA criteria had a 5.90% stroke rate, and those who met the full ESVEA definition had a 16.30% stroke rate. This gradient suggests that the more supraventricular ectopic activity a person has, the greater their stroke risk may be. This research suggests that monitoring for ESVEA using standard 24-hour heart recordings could potentially help identify people at elevated stroke risk before they experience a stroke or are diagnosed with atrial fibrillation — a well-known stroke risk factor. However, the authors caution that this was a relatively small retrospective study conducted at three hospitals in China, and the specific thresholds used to define ESVEA were derived from this dataset itself, meaning results need to be confirmed in larger, prospective studies before these findings can be applied in clinical practice.
Yang M, Tang Y, Jiang H, Yin C, Gang R, Ran Z, et al.. (2026). Excessive supraventricular ectopic activity and new-onset ischemic stroke: a retrospective cohort study with prospective outcome ascertainment.. Frontiers in neurology. https://doi.org/10.3389/fneur.2026.1921826