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1.
Trials ; 21(1): 627, 2020 Jul 08.
Article in English | MEDLINE | ID: mdl-32641090

ABSTRACT

BACKGROUND: With a survival rate of 6 to 11%, out-of-hospital cardiac arrest (OHCA) remains a healthcare challenge with room for improvement in morbidity and mortality. The guidelines emphasize the highest possible quality of cardiopulmonary resuscitation (CPR) and chest compressions (CC). It is essential to minimize CC interruptions, and therefore increase the chest compression fraction (CCF), as this is an independent factor for survival. Survival is significantly and positively correlated with the suitability of CCF targets, CC frequency, CC depth, and brief predefibrillation pause. CC guidance improves adherence to recommendations and allows closer alignment with the CC objectives. The possibility of improving CCF by lengthening the time between two CC relays and the effect of real-time feedback on the quality of the CC must be investigated. METHODS: Using a 2 × 2 factorial design in a multicenter randomized trial, two hypotheses will be tested simultaneously: (i) a 4-min relay rhythm improves the CCF (reducing the no-flow time) compared to the currently recommended 2-min relay rate, and (ii) a guiding tool improves the quality of CC. Primary outcomes (i) CCF and (ii) correct compression score will be recorded by a real-time feedback device. Five hundred adult nontraumatic OHCAs will be included over 2 years. Patients will be randomized in a 1:1:1:1 distribution receiving advanced CPR as follows: 2-min blind, 2 min with guidance, 4-min blind, or 4 min with guidance. Secondary outcomes are the depth, frequency, and release of CC; length (care, no-flow, and low-flow); rate of return of spontaneous circulation; characteristics of advanced CPR; survival at hospital admission; survival and neurological state on days 1 and 30 (or intensive care discharge); and dosage of neuron-specific enolase on days 1 and 3. DISCUSSION: This study will contribute to assessing the impact of real-time feedback on CC quality in practical conditions of OHCA resuscitation. It will also provide insight into the feasibility of extending the relay rhythm between two rescuers from the currently recommended 2 to 4 min. TRIAL REGISTRATION: ClinicalTrials.gov, NCT03817892 . Registered on 28 January 2019.


Subject(s)
Cardiopulmonary Resuscitation/methods , Heart Massage/instrumentation , Heart Massage/standards , Out-of-Hospital Cardiac Arrest/therapy , Adult , Blood Circulation/physiology , Cardiopulmonary Resuscitation/mortality , Emergency Medical Technicians , Feedback , France , Hospitalization , Humans , Multicenter Studies as Topic , Out-of-Hospital Cardiac Arrest/mortality , Pressure , Randomized Controlled Trials as Topic , Survival Rate , Time Factors
2.
Emerg Med Australas ; 27(6): 590-596, 2015 Dec.
Article in English | MEDLINE | ID: mdl-26449723

ABSTRACT

OBJECTIVE: Despite recent efforts, most people are not trained in cardiopulmonary resuscitation (CPR), which has a major impact on survival following cardiac arrest (CA). We have set up a dispatcher-assisted CPR protocol at our call centre, based on international guidelines issued in 2010. The aim of our study was to evaluate the impact of this protocol on CA diagnosis and quantity of recommendations given by telephone dispatchers to untrained witnesses. METHODS: We performed a 'before and after' monocentric observational study. Data were compared before and a short time after (2 months) implementation of the protocol. We included patients presenting as an out-of-hospital CA in the presence of a witness untrained in CPR. Fisher's test was used to compare periods. P < 0.05 was considered significant. RESULTS: During the 8 month period before the protocol, 115 victims were potentially eligible for CPR. Diagnosis was achieved in 63.5% of cases and CPR recommendations given in 6.1%. After implementation of the protocol, 130 victims were potentially eligible for CPR. Frequency of CA diagnosis was significantly higher after the protocol with 76% of cases (P = 0.0359). Frequency of CPR recommendations given to witnesses was also significantly higher after the protocol, with a fivefold increase up to 29.2% (P < 0.0001). CONCLUSION: Implementation of a dispatcher-assisted CPR protocol was efficient in improving both CA diagnosis and CPR recommendations given to untrained witnesses for out-of-hospital CA with a very short time of dispatcher training. It is a simple and efficacious measure, at no additional cost and with the promises of improving prognosis following cardiac arrest in a centre not equipped with computerised dispatcher support programmes.

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