A composite artificial intelligence-enabled electrocardiogram (AI-ECG) identified prevalent and predicted incident Structural heart disease (SHD) across multinational cohorts, capturing signals beyond its training targets and supporting its potential as a scalable cardiovascular screening tool.
Abstract
Background Structural heart disease (SHD) drives heart failure and cardiovascular mortality but remains underdiagnosed, and echocardiography is limited as a population-level screening tool. Objectives We evaluated whether a composite artificial intelligence-enabled electrocardiogram (AI-ECG), combining independently developed models for left ventricular systolic (LVSD) and diastolic dysfunction (LVDD), identifies prevalent and predicts incident SHD across diverse populations. Methods In this multinational cohort study, detection was assessed cross-sectionally in a Korean clinical cohort (Incheon Sejong Hospital) and a US dataset (Columbia University Irving Medical Center), and incident risk was assessed in the Korean cohort and the UK Biobank among individuals without baseline SHD or heart failure. Adults with paired ECG and echocardiography were analyzed for detection, with the composite defined as positive on either model. SHD comprised reduced left ventricular ejection fraction, moderate or severe valvular disease, left ventricular hypertrophy, or pulmonary hypertension. Detection was assessed by sensitivity and specificity, and incident risk by Cox models and the C statistic. Results Among 46,082 and 36,286 participants in the two detection cohorts, the composite detected SHD with sensitivity of 71.8% and 76.1% and specificity of 88.3% and 70.1%, with positivity across all phenotypes. Among at-risk individuals, composite positivity was associated with incident SHD (hazard ratios, 3.75 and 2.75), with C statistics of 0.69 to 0.78. Conclusions A composite AI-ECG identified prevalent and predicted incident SHD across multinational cohorts, capturing signals beyond its training targets and supporting its potential as a scalable cardiovascular screening tool; whether ECG-based risk stratification improves outcomes requires prospective evaluation.
Artificial intelligence-enhanced electrocardiography demonstrated good diagnostic performance for detecting LVDD and may support future rule-out or risk-enrichment strategies in selected populations, however, current evidence remains insufficient to support routine clinical implementation.
Johann A. C. Edjimbi, Nisarg Shah, L. Donisi et al.· European Heart Journal - Dig...· 1 citation
Adding AI-ECG signals to PREVENT-HF improves near-term heart-failure risk discrimination and reclassification, though without demonstrated benefit on clinical outcomes such as heart-failure hospitalization or mortality.
A. Bollmann, V. Pradler, D. Husser et al.· Frontiers in Cardiovascular...· 0 citations
Background/Objectives: Artificial intelligence-enabled electrocardiography (AI-ECG) can infer left ventricular systolic dysfunction (LVSD) and diastolic dysfunction (LVDD) from a standard 12-lead tracing. Whether these structural AI-ECG scores predict incident atrial fibrillation (AF) in patients in sinus rhythm, and how their predictive value changes over time, is unclear. Methods: In a retrospective single-center cohort of patients with a sinus-rhythm index ECG, AI-ECG LVSD and LVDD scores were derived and dichotomized at prespecified cutoffs (LVSD ≥ 9.7; LVDD ≥ 20.8). The outcome was incident AF, assessed within 30, 90, 180, 270, and 365 days. Discrimination was quantified by the AUROC. Because the proportional hazards assumption was violated, the time course of risk for the joint LVSD × LVDD classification was characterized with window-specific Cox, Aalen additive hazards, and restricted mean survival time analyses. Results: Among 19,593 index ECGs from 18,984 patients, 1190 (6.07%) were followed by incident AF within one year. One-year incidence rose from 4.1% (both negative) to 9.8% (LVSD-positive only), 20.1% (LVDD-positive only), and 19.9% (both positive). Discrimination was highest for early events and attenuated over time, more steeply for LVSD (AUROC 0.803 at 30 days to 0.713 at 365 days) than LVDD (0.817 to 0.764). Combining AI-ECG LVSD and LVDD models, the excess risk conferred by dual positivity was concentrated in the first weeks after the index ECG and, consistently across cumulative Cox, Aalen additive hazards, and restricted mean survival time analyses, converged with that of isolated LVDD positivity by one year. Conclusions: Structural AI-ECG LVSD and LVDD scores from a single sinus-rhythm ECG predict incident AF in a time-dependent manner, with the strongest performance shortly after acquisition and more durable discrimination for LVDD. A single AI-ECG may help target short-term AF surveillance, particularly in patients with combined systolic–diastolic dysfunction.
Kyung Su Kim, J. Son, H. Lee et al.· Diagnostics· 0 citations
The AI-ECG model accurately identified LVSD in ED patients in this cohort despite heterogeneous acquisition conditions and retained good discrimination in hemodynamically unstable subgroups, although findings in the smaller hypotensive subgroup should be interpreted as exploratory.
In this single-center exploratory cohort of patients with obstructive hypertrophic cardiomyopathy receiving mavacamten, ECG-Vision left ventricular demonstrated high observed sensitivity and negative predictive value for TTE-defined LVSD, although estimates were imprecise because LVSD events were infrequent.
Aakash Bavishi, John Fritzlen, Marybeth Soutar et al.· Circulation: Heart Failure· 0 citations
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