The effect of work shift configurations on emergency medical dispatch center response

Effects of a sedentary behaviour intervention in emergency dispatch centre phone operators: a study protocol for the SECODIS randomised controlled cross-over trial

INTRODUCTION

Sedentary behaviour is a public health problem. We mainly have sedentary behaviour at work, transforming them into occupational risk. To our knowledge, there is no intervention study on the reduction of occupational sedentary behaviour in a real work situation and its impact on health and biomarkers of stress. The main objective is to study changes in sedentary behaviour following a behavioural intervention (sit-and-stand desk and cycle ergometer).

METHODS AND ANALYSIS

This is a randomised controlled trial in cross-over design conducted in a single centre. The study will be proposed to emergency medical dispatchers of Clermont-Ferrand. Each volunteer will be followed during three cycles of 1 week (3 weeks in total). Each 1-week cycle is made up of 12 hours of work (three conditions: a control and two interventions), 12 hours of successive rest and 6 days of follow-up. For each condition, the measurements will be identical: questionnaire, measure of heart rate variability, electrodermal activity and level of physical activity, saliva and blood sampling. The primary outcome is sedentary behaviour at work (ie, number of minutes per day standing/active). Data will be analysed with both intention-to-treat and per protocol analysis. A p<0.05 will be considered as indicating statistical significance.

ETHICS AND DISSEMINATION

The study protocol has been approved by the Ethics Committee Ouest IV, FRANCE. The study is registered in ClinicalTrials.gov. All patients will be informed about the details of the study and sign written informed consent before enrolment in the study. Results from this study will be published in a peer-reviewed journal. This study involves human participants and was approved by Comité de protection des personnes Ouest IVCPP reference: 23/132-2National number: 2022-A02730-43.

TRIAL REGISTRATION NUMBER

NCT05931406.

Emergency Key Performance Indicators in the Italian region Friuli Venezia Giulia

Key Performance Indicators (KPI) regard key areas of a particular service which needs to be evaluated. Within the health system, they represent specific and measurable elements and are based on standards generally set by the scientific literature. KPI can be used to assess performances in different areas and achievement of goals. To develop and calculate a set of KPI in the Italian Region Friuli Venezia Giulia (1 million inhabitants) as an audit tool for the regional Emergency healthcare system, with a focus on three timedependent conditions: trauma, acute myocardial infarction, and stroke. To develop the set, a modified Delphi process was applied among Emergency care experts in Friuli Venezia Giulia. Then, the indicators were calculated from anonymous administrative health databases (Emergency Medical System, Emergency Department, hospital discharge, cardiac catheterization laboratory). Databases could be linked with each other at the individual level through a univocal stochastic key. Sensitivity analyses were conducted where different results were expected using different databases. Sixty-one indicators were calculated for the year 2018. Five indicators were summary descriptive measures, 10 were outcome measures, the others were process indicators; 20 were specific on acute myocardial infarction, 12 on trauma, 4 on stroke. Values for some indicators varied depending on the data source. These KPI provided new and interesting information and are used for periodic audit purposes in Friuli Venezia Giulia. Higher quality, completeness and richness of the administrative databases should be promoted to further increase the value of the indicators.

Does the "Morning Morality Effect" Apply to Prehospital Anaesthesiologists? An Investigation into Diurnal Changes in Ethical Behaviour

The “morning morality effect”—the alleged phenomenon that people are more likely to act in unethical ways in the afternoon when they are tired and have less self-control than in the morning—may well be expected to influence prehospital anaesthesiologist manning mobile emergency care units (MECUs). The working conditions of these units routinely entail fatigue, hunger, sleep deprivation and other physical or emotional conditions that might make prehospital units predisposed to exhibit the “morning morality effect”. We investigated whether this is in fact the case by looking at the distribution of patient transports to hospital with and without physician escort late at night at the end of the shift as a surrogate marker for changing thresholds in ethical behaviour. All missions over a period of 11 years in the MECU in Odense were reviewed. Physician-escorted transports to hospital were compared with non-physician-escorted transports during daytime, evening, and night-time (which correlates with time on the 24 h shifts). In total, 26,883 patients were transported to hospital following treatment by the MECU. Of these, 27.4% (26.9%–27.9%) were escorted to the hospital. The ratio of patient transports to hospital with and without physician escort during the three periods of the day did not differ (p = 1.00). We found no evidence of changes in admission patterns over the day. Thus, no evidence of the expected “morning morality effect” could be found in a prehospital physician-manned emergency care unit.

Referral pathway of patients aged 75 years and older after a telephone triage by the French emergency medical communication center (SAMU)

OBJECTIVES

To map the referral pathways of elderly people after telephone calls to Emergency Medical Communication Centers (ECC) in France.

DESIGN

Retrospective observational study.

SETTING

ECC and Emergency Departments (ED) of the Rhone region in France in 2013.

PARTICIPANTS

Patients aged 75 years and older who called or had calls made to the ECC on 7 non-consecutive days (n = 712).

MEASUREMENTS

All calls made by/for patients aged 75 and over were analyzed. Data were collected regarding geriatric assessment and patient discharge destination after admission to an ED.

RESULTS

All 4168 calls received over the 7 days were analyzed. Of these, 692 involved the care of elderly people and were included. The median call duration was 2min59 [1min57; 4min13]. Following the call, 35% of the patients remained at home, 62% were referred to ED and 3% were directly hospitalized in intensive care units. Of the patients admitted to ED, 73% had a stable clinical condition and the main reason for admission was a fall (28%). Following ED care, 56% of patients were hospitalized and 44% returned directly home.

CONCLUSION

Over half the elderly patients included in this study were referred to an ED after a call to ECC. For half of them, their clinical condition was considered stable and they were discharged after the ED visit. A more appropriate assessment of clinical conditions among geriatric patients could help to improve patient triage during ECC calls, and therefore reduce ED referrals.

Key performance indicators' assessment to develop best practices in an Emergency Medical Communication Centre

INTRODUCTION

Emergency Medical Communication Centre (EMCC) represents a pivotal link in the chain of survival for those requiring rapid response for out-of-hospital medical emergencies. Assessing and grading the performance of EMCCs are warranted as it can affect the health and safety of the served population.

OBJECTIVE

The aim of our work was to describe the activity on an EMCC and to explore the associations between different key performance indicators.

METHODS

We carried out our prospective observational study in the EMCC of Nantes, France, from 6 June 2011 to 6 June 2015. The EMCC performance was assessed with the following key performance indicators: answered calls, Quality of Service 20 s (QS20), occupation rate and average call duration.

RESULTS

A total of 35 073 h of dispatch activity were analysed. 1 488 998 emergency calls were answered. The emergency call incidence varied slightly from 274 to 284 calls/1000 citizens/year between 2011 and 2015. The median occupation rate was 35% (25-44). QS20 was correlated negatively with the occupation rate (Spearman's ρ: -0.78). The structural equation model confirmed that the occupation rate was highly correlated with the QS20 (standardized coefficient: -0.89). For an occupation rate of 26%, the target value estimated by our polynomial model, the probability of achieving a QS20 superior or equal to 95% varied between 56 and 84%.

CONCLUSION

The occupation rate appeared to be the most important factor contributing towards the QS20. Our data will be useful to develop best practices and guidelines in the field of emergency medicine communication centres.

Association between the centralization of dispatch centers and dispatcher-assisted cardiopulmonary resuscitation programs: A natural experimental study

OBJECTIVES

We aimed to evaluate the associations between the centralization of dispatch centers and dispatcher-assisted bystander cardiopulmonary resuscitation (DA-BCPR) for out-of-hospital cardiac arrest (OHCA) patients.

METHODS

All emergency medical services (EMS)-treated adults in Gyeonggi province (34 fire departments covering 43 counties, with a population of 12.6 million) with OHCAs of cardiac etiology were enrolled between 2013 and 2016, excluding cases witnessed by EMS providers. In Gyeonggi province, 34 agency-based dispatch centers were sequentially integrated into two province-based central dispatch centers (north and south) between November 2013 and May 2016. Exposure was the centralization of the dispatch centers. Endpoint variables were BCPR and dispatcher-provided CPR instructions. Generalized linear mixed models for multilevel regression analyses were performed.

RESULTS

Overall, 11,616 patients (5060 before centralization and 6556 after centralization) were included in the final analysis. The OHCAs that occurred during the after-centralization period were more likely to receive BCPR (62.6%, 50.6% BCPR-with-DA and 12.0% BCPR-without-DA) than were those that occurred before-centralization period (44.6%, 16.6% BCPR-with-DA and 28.1% BCPR-without-DA) (p < 0.01, adjusted OR: 1.59 (1.38-1.83), adjusted rate difference: 9.1% (5.0-13.2)). For dispatcher-provided CPR instructions, OHCAs diagnosed at a higher rate during the after-centralization period than during the before-centralization period (67.4% vs. 23.1%, p < 0.01, adjusted OR: 4.57 (3.26-6.42), adjusted rate difference: 30.3% (26.4-34.2)). The EMS response time was not different between the groups (p=0.26).

CONCLUSIONS

The centralization of dispatch centers was associated with an improved bystander CPR rate and dispatcher-provided CPR instructions for OHCA patients.

Stress and salivary cortisol in emergency medical dispatchers: A randomized shifts control trial

Stress at work is a public health concern. Phone operators in emergency medical dispatch centers are particularly at risk. We aimed to demonstrate that the most stressful time for emergency medical dispatchers is the shift when they receive emergency incoming calls, with cortisol as a biomarker of stress. For each emergency medical dispatcher, we measured outcomes over a control day and during three types of shift: Incoming emergency call, Dispatch and Re-assessment. The pattern of shifts was randomized. Saliva was sampled every 15 minutes for 2 hours, i.e. 6 consecutive times, starting 15 minutes after the first life-and-death incoming emergency call between 2 and 5 pm during three types of shift. We measured saliva cortisol every 2 hours over a control day, from 7am to 9pm. Perceived stress was assessed by a visual analog scale. We recruited 22 phone operators aged 36.4+/-10.8 years old (14 women and 8 men). Cortisol values were higher during the Incoming emergency call shift than during the Dispatch (p = .04) and Re-assessment (p = .04) shifts. The increase in cortisol levels was greater in men than in women (p = .009). There were no differences between control values and those of the three shifts. The kinetics of cortisol increased with greater perceived stress overall (p < .001) and for each type of shift (Incoming emergency call, p = .02; Dispatch p = .03; Re-assessment: p < .001). The kinetics of cortisol in response to incoming emergency calls was greater when the call was an absolute emergency (p = .03), and also tended to further increase when a subsequent absolute incoming emergency call was received (p = 0.07). In conclusion, the incoming emergency call shift carries particular risk for dispatchers, who have greater perceived stress and a greater increase in cortisol levels.