Validation of the HAR Score for Prioritization of Patients Calling the Emergency Medical Service for Chest Pain by Emergency Call Dispatcher
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: follow up call.
- Who it may be relevant to
- Registry conditions: Chest Pain. Basic parameters: from 18 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- France
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Validation of the HAR Score for Prioritization of Patients Calling the Emergency Medical Service for Chest Pain by Emergency Call Dispatcher : Reg-HAR Study
Overview
The lifetime prevalence of chest pain in the general population is 20-40%. The etiologies to be evoked from the outset of management are those of cardiovascular origin, such as acute coronary syndrome (ACS) and pulmonary embolism. ACS is responsible for almost 20% of deaths. Delay in treatment is a major prognostic factor, given the importance of coronary reperfusion. In France, one of the first contacts with the healthcare system is the medical regulation assistant (MRA) at the Centre 15. His or her role is to prioritize the call according to the identification of immediate signs of seriousness, and if necessary, to decide autonomously to send a rescue team before medical regulation. Depending on the reason for the call and any signs of seriousness, it prioritizes the call according to the expected response time. In line with current recommendations, all calls for chest pain should be answered by an emergency medical dispatcher (EMR) within 5 minutes. However, 60-90% of chest pain calls are not of cardiovascular origin. Their prioritization could therefore be re-qualified for longer response times. Given the frequency of this type of call, a more efficient MRA referral strategy is needed. To achieve this, decision-support tools would be essential. The performance of the HAR (History, Age and Risk Factors) score has been recently explored, derived from the HEART score, in a previous single-center prospective study in 2019. It stratifies the risk of a major cardiovascular event (MCE) into low (0 or 1 point), intermediate (2 or 3 points) or high (4, 5 or 6 points). Investigator's hypothesis is that the HAR score could be entrusted to MRA, to enable them to optimize the prioritization of patients calling with non-traumatic chest pain, by qualifying low-risk chest pain calls on the one hand, which could be prioritized in P2 SNP, and high-risk calls on the other, making it possible to anticipate the dispatch of an emergency service.
Interventions
- Other follow up call
A follow-up call is made to the patient 30 days (+ 5 days) after inclusion to check for the occurrence of an Major Cardio Vascular Event.
Primary outcome measures
- Number of major cardiovascular events [Time frame: 30 days]
Secondary outcome measures (4)
- Performance of the HAR Score: Sensitivity, Specificity, and Comparison Between EMR and MRA [Time frame: From Day 0 to Day 30]
- Comparaison between rescue resources decided and predicted by the HAR score [Time frame: From Day 0 to Day 30]
- Time delta between the end of the MRA's score suggesting the dispatch of equipment (HAR score ≥ 4 points) and the actual decision to dispatch equipment in the current situation. [Time frame: From Day 0 to Day 30]
- Area under the ROC curve and Delong-Delong test [Time frame: From Day 0 to Day 30]
Eligibility criteria
Inclusion criteria
- Patient of legal age (≥ 18 years)
- Calling Center 15 from 49, 72 or 37
- Expressing non-traumatic chest pain, even if this is not the main reason for seeking help.
Exclusion criteria
- Treatment in departments other than 49, 72 and 37
- Taken in charge in an emergency department of a private facility in the 49, 72 and 37 départements
- Poor understanding of the French language
- Non-affiliated or non-beneficiary of a social security scheme
- Person deprived of liberty by judicial or administrative decision
- Person under forced psychiatric care
- Person subject to a legal protection measure
- Person unable to express his/her non-opposition.
- Follow-up at Day 30 impossible for any reason
- Person having expressed his/her opposition to the collection of his/her data.
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Observational model
- Other
Study locations
France · 3 centers
- Centre Hospitalier Universitaire d'Angers — Angers
- Centre Hospitalier Le Mans — Le Mans
- CHRU de Tours — Tours
Identifiers
NCT: NCT06859021 · CHM-2024-S01-08