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PROTEUS: Evaluating the use of artificial intelligence to support stress echocardiography testing for heart disease

A PROspective Randomised Controlled Trial Evaluating the Use of Artificial Intelligence in Stress Echocardiology (PROTEUS)

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN15113915
Enrollment
2500
Registered
2021-07-09
Start date
2021-11-08
Completion date
Unknown
Last updated
2025-09-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

AI assessment of patients with suspected Coronary Artery Disease (CAD) Circulatory System Atherosclerotic heart disease

Interventions

Eligible patients will be randomised using a secure online randomisation tool. Participants will be randomised 1:1 to receive 1) standard care (comparator) or 2) AI supported standard care (interve

Sponsors

Ultromics Ltd
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Willing and able to provide informed consent 2. Male or female, =18 years of age at study entry 3. Referred to an NHS Trust for stress echocardiography for investigation of ischaemic heart disease

Exclusion criteria

Exclusion criteria: 1. More than moderate valvular heart disease 2. Left ventricular outflow tract obstruction defined as a gradient > 30mmHg (fixed or dynamic; supravalvular, valvular or sub-valvular) 3. Significant co-morbidities (e.g. cancer) with an expected life-expectancy of under 12 months in the investigator's opinion 4. Previous coronary artery bypass graft or other cardiac surgery 5. Congenital or inherited myocardial disease

Design outcomes

Primary

MeasureTime frame
Current primary outcome measure as of 26/05/2022: AUROC for the ability to make an appropriate referral to coronary angiogram measured using medical record review at 3 and 6 months Previous primary outcome measure: Assessment of whether appropriate clinical management has been achieved at 6 months post visit through medical record review at 3 and 6 months.

Secondary

MeasureTime frame
Current secondary outcome measures as of 26/05/2022: 1. Appropriate clinical management at 6 months following stress echocardiogram (SE) measured using medical record review at 3 and 6 months. Appropriate management will be defined as a composite of: 1.1. If, following a stress echo, the decision was made to refer the patient for a coronary angiogram, the outcome will be positive if the coronary angiography demonstrates severe coronary disease fulfilling clinical care guidelines for revascularisation, or 1.2. If, following a stress echo, the decision was made not to refer the patient for coronary angiography, but rather, the patient to have medical management, the outcome will be positive if the follow up of participant health provides reassurance without unanticipated serious adverse cardiac events 2. Number of acute coronary events not related to elective cardiac procedures occurring up to 6 months following SE measured using medical record review at 6 months. Acute coronary events are defined as: 2.1. Myocardial Infarction Type 3 (ECS universal definition), and 2.2. Hospital admission with Myocardial Infarction Type 1 (ESC universal definition) 3. Change in clinical management decision following review of the EchoGo report measured using clinician self-report at baseline, 3 months, and the end of study at each participating site 4. Clinician diagnostic confidence in their interpretation of the stress echo report measured using clinician self-report at baseline, 3 months, and the end of study at each participating site 5. Inter-clinician and in-site variability measured at baseline, 3 months, and at end of study 6. Incidences of the following (occurring up to 6 months following stress echo) measured using medical record review at 3 and 6 months: 6.1. Myocardial Perfusion Scan 6.2. CT coronary angiogram 6.3. Stress echo 6.4. Invasive coronary angiogram 6.5. Stress CMR 6.6. Exercise tolerance test 6.7. Initiation of anti-anginal medication/medical management of ang

Countries

England, United Kingdom

Contacts

Public ContactBen Thompson
Proteus@ultromics.com+44 (0)7515 998737

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 11, 2026