Smartwatch heart tracings to detect heart attacks in people with chest pain
Compares smartwatch heart recordings with standard ECG for spotting STEMI in chest pain.
Plain-language title generated from the registry record
Registry title: SMARTwatch for the Diagnosis of ST-segment Elevation Myocardial Infarction in Patients With Chest Pain
Key facts
- Where
- Cartagena, SpainSee the site
Where in Spain
- Hospital General Universitario Santa LuciaCartagena, SpainTaking people
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Trial details
- Who runs it
- Hospital General Universitario Santa Lucia
- Trial code
- NCT07780942
- Record updated
- 26 August 2026
- Original description
The main symptom that initiates the diagnostic and therapeutic process for patients with suspected acute coronary syndrome is chest pain. Based on a standard 12-lead electrocardiogram (ECG), patients can be diagnosed with ST-segment elevation myocardial infarction (STEMI), which requires immediate medical treatment. Recently, wearable devices like smartwatches with ECG capabilities have opened new pathways for cardiac triage, but their diagnostic precision and technical viability in a real, unselected Emergency Department setting need to be confirmed.Read full original descriptionShow less
Observational and Prospective Diagnostic Validation Study of the SMARTwatch for ST-segment Elevation Myocardial Infarction in Health Area of Cartagena
The main symptom that initiates the diagnostic and therapeutic process for patients with suspected acute coronary syndrome is chest pain. Based on a standard 12-lead electrocardiogram (ECG), patients can be diagnosed with ST-segment elevation myocardial infarction (STEMI), which requires immediate medical treatment. Recently, wearable devices like smartwatches with ECG capabilities have opened new pathways for cardiac triage, but their diagnostic precision and technical viability in a real, unselected Emergency Department setting need to be confirmed.
The primary objective of this prospective, observational study is to compare the diagnostic capacity of a 9-lead ECG obtained with a smartwatch against the standard 12-lead ECG for diagnosing STEMI in patients consulting for chest pain.
During the study, patients evaluated by the on-call cardiologist for ischemic chest pain will undergo their standard care. In addition to the standard 12-lead ECG, a 9-lead ECG will be sequentially recorded using a smartwatch. This is an observational study, meaning the smartwatch recording will not cause any delay in clinical action or negatively impact the patient's standard treatment.
Specifically, the study aims to:
* Analyze the diagnostic agreement between expert cardiologists when blindly and independently classifying the smartwatch recordings versus the standard ECG recordings as "STEMI" or "non-STEMI". * Evaluate the technical feasibility of using the smartwatch in an Emergency Department setting by assessing the percentage of unreadable records due to artifacts.
Inclusion: Patients evaluated by the on-call cardiologist for chest pain with an ischemic profile.
Exclusion: Patients with a prior diagnosis of left bundle branch block or pacemaker-mediated pacing; Patients with extreme hemodynamic instability where the additional recording would cause an ethically unacceptable delay in their treatment; Patients who decline participation in the registry.