Update: 15 October 2026 · AI in Emergency Medicine
A DIFOCCULT-3 substudy published in the 12 October 2026 issue of JACC: Cardiovascular Interventions included 4,398 patients without diagnostic ST-segment elevation. With an occlusion-focused pathway, acute coronary occlusion was identified within two hours in 35.1% of patients, versus 16.7% under conventional care, without a reduction in angiographic yield.
Why it matters for emergency departments and EMS. The findings address timely recognition of coronary occlusions that do not meet STEMI criteria. According to the manufacturer’s methodological summary, the pathway combined clinical assessment, ECG interpretation and Queen of Hearts eOMI v1. The benefit concerns the overall strategy and cannot be attributed to the algorithm alone.
Evidence and limitations. This is a peer-reviewed substudy of a multicentre cluster-randomized trial. It does not by itself demonstrate an AI-related mortality reduction. Two authors disclose stock holdings in the manufacturer. Transferability to Italian pathways, particularly prehospital care, requires assessment.
Italy and the European Union. The manufacturer describes Queen of Hearts as a CE-marked Class IIb medical device. Available instructions, including Italian, refer to model v2.1, whereas the studied pathway used v1. Check the exact version, intended use and local availability. These are manufacturer statements, not a new regulatory decision.
Before adoption. Review missed occlusions, inappropriate catheterization laboratory activations, ECG quality, clinical outcomes and workflow impact with cardiology. Establish clinician oversight and a process for discrepant results. Use institutionally authorized systems for ECG images and health data, with GDPR review of access, retention and processing. Do not upload identifiable health information to consumer tools.
Sources. Original study — JACC Cardiovascular Interventions, 12 October 2026; manufacturer’s summary, 12 October 2026; instructions for use, updated 23 August 2026; manufacturer’s regulatory FAQ.
Prepared with the assistance of artificial intelligence for information and education. This content does not replace original sources, local protocols or clinical judgment.