Pragmatic Randomised Trial of the ESC 0/1 Versus 0/3 Hour Troponin Pathway
MACROS2
Safety and Feasibility of Triage and Rapid Discharge of Patients With Chest Pain From Accident and Emergency: a Pragmatic, Randomised, Multicentre, Non-inferiority Control Trial of the Accelerated European Society of Cardiology (ESC) 0-1 Hour Pathway vs. Conventional 0-3 Hour Accelerated Diagnostic Protocol.
1 other identifier
interventional
3,536
1 country
1
Brief Summary
The primary objective of this study is to assess the feasibility and impact of implementing the ESC 0-1 hour high sensitive troponin pathway in clinical practice and with specific reference to the 0-3 hour pathway currently in use. The principal outcome measure will be the safety of the 0-1 hour protocol (which is less established and has limited data on safety when implemented in clinical practice)
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable
Started Dec 2021
Typical duration for not_applicable
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
December 10, 2021
CompletedFirst Submitted
Initial submission to the registry
January 4, 2022
CompletedFirst Posted
Study publicly available on registry
April 11, 2022
CompletedPrimary Completion
Last participant's last visit for primary outcome
June 1, 2024
CompletedStudy Completion
Last participant's last visit for all outcomes
November 10, 2024
CompletedMarch 5, 2024
March 1, 2024
2.5 years
January 4, 2022
March 4, 2024
Conditions
Keywords
Outcome Measures
Primary Outcomes (2)
percentage safe discharge by 4 hours. safety defined as type 1 MI and CV deah
We will compare safe discharge by each strategy (ie the ESC 0-1 hour pathway versus 0-3 pathway) and the proportion actually discharged by each pathway at 4 hours. The exact definition of safety will be percentage (of cohort randomised to each pathway) safely discharged by 4 hours of presentation to accident and emergency (Safety will be judged by type 1 myocardial infarction, cardiovascular death by 4 weeks with sensitivity \>98% - the study will be powered on safety to establish whether 0-1-hour performance is equivalent to 0-3-hour sampling by means of a non-inferiority analysis- see statistics). (Type 1 myocardial infarction is due to acute coronary atherothrombotic myocardial injury with either plaque rupture or erosion and, often, associated thrombosis. A separate analysis will also be undertaken with inclusion of type 2 MI as well as type 1 MI as an endpoint
4 hours
point of care troponin performance compared to laboratory performance
largely rule-out of Quidel triage true and siemens VTLI
4 hours
Secondary Outcomes (9)
Type 1 myocardial infarction
30 days
All cause death, type 1 myocardial infarction and urgent or emergency revascularisation. This analysis will be repeated incorporating both type 1 and 2 MI definition. (prespecified secondary analysis)
30 days
Proportion with rule-out or rule-in MI in the 0-1 hour and 0-3 hour
30 days
Prediction of MI with myocardial ischemic injury index (MI3) algorithm
30 days
HEART ≤3 and a modified HEART score for rule-out MI at 30 days
30 days
- +4 more secondary outcomes
Study Arms (2)
ESC 0/1 pathway
EXPERIMENTALA two-arm parallel group, two-centre pragmatic randomised controlled trial of 0-1-hour high sensitivity troponin T (hs cTnT) compared to a 0-3-hour pathway as rules for rapid discharge of suspected ACS. (both incorporating single presentation sample limit of detection (LOD) high sensitive troponin as a rule for discharge, or cut-off selected by manufacturer). The power of the study is on safety rather than percent discharge achieved by 4 hours as this is the primary focus for clinicians and health care institutions. (By virtue of the earlier sampling the 0-1 hour troponin sampling is likely to allow greater discharges by 4 hours and the sample size for safety easily accommodates this aspect).
ESC 0/3 hour pathway
ACTIVE COMPARATORA two-arm parallel group, two-centre pragmatic randomised controlled trial of 0-1-hour high sensitivity troponin T (hs cTnT) compared to a 0-3-hour pathway as rules for rapid discharge of suspected ACS. (both incorporating single presentation sample limit of detection (LOD) high sensitive troponin as a rule for discharge, or cut-off selected by manufacturer). The power of the study is on safety rather than percent discharge achieved by 4 hours as this is the primary focus for clinicians and health care institutions. (By virtue of the earlier sampling the 0-1 hour troponin sampling is likely to allow greater discharges by 4 hours and the sample size for safety easily accommodates this aspect).
Interventions
randomisation to 0/1 versus 0/3 hour pathway
Eligibility Criteria
You may qualify if:
- Chest pain with moderate or high suspicion chest pain (see chest pain evaluation chart at end) or any patient the clinician deems suspicious for myocardial ischaemia thus requesting a troponin sample (between daytime hours 0800hrs to 1800hrs)
- Presentation \<12 hours since onset of chest pain (or unknown duration)
- Age \>18 years of age
You may not qualify if:
- ST elevation myocardial infarction (STEMI) infarct on the presenting electrocardiogram (ECG)
- Symptoms considered definitely non-cardiac
- Trauma
- Pregnancy
- Comorbid conditions requiring hospital admission
- Coronary artery bypass graft surgery (CABG) \<1 month
- coexistent clinical conditions likely to preclude follow-up.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Liverpool University Hospitals NHS Foundation Trustlead
- northwest coast academic science networkcollaborator
- Quidel Corporationcollaborator
- Siemens Corporation, Corporate Technologycollaborator
- Abbott Diagnostics Divisioncollaborator
Study Sites (1)
liverpool university Hospital nhs foundation trust
Liverpool, GB, L186JR, United Kingdom
Related Publications (1)
Khand A, Hatherley J, Dakshi A, Miller G, Bailey L, Fisher M, Goulden C, Noori Z, Rawat A, Hornby R, Fearon H, Meah N, Davies S, Sekulska K, Hassan A, Lambert A, Phillips S, Raj R, Wiles T, Collinson P. Safety and feasibility of triage and rapid discharge of patients with chest pain from emergency room: A pragmatic, randomized noninferiority control trial of the European Society of Cardiology (ESC) 0 to 1 hour pathway vs conventional 0 to 3 hour accelerated diagnostic protocol. Am Heart J. 2024 Dec;278:235-247. doi: 10.1016/j.ahj.2024.08.005. Epub 2024 Aug 14.
PMID: 39151715DERIVED
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- STUDY DIRECTOR
Heather Rodgers
Liverpool University Hospitals NHS Foundation Trust
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- DIAGNOSTIC
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER GOV
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
January 4, 2022
First Posted
April 11, 2022
Study Start
December 10, 2021
Primary Completion
June 1, 2024
Study Completion
November 10, 2024
Last Updated
March 5, 2024
Record last verified: 2024-03