Video-instructed First Aid in Emergency Medical Call Centers

Emergencies Clinical Trial

Official title:

Video Streaming in Norwegian Emergency Medical Call Centers as a Supplement to Telephone-instructed Bystander First Aid for Injured Patients

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT05121649
• Other study ID #: 247264
• Status: Completed
• Start date: November 8, 2021
• Est. completion date: June 30, 2023

Study information

• Verified date: October 2023
• Source: Oslo Metropolitan University
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

Video streaming as an additional tool to telephone was introduced in some Norwegian emergency medical call centers during the spring of 2020. This allows the dispatchers to communicate with the caller through video streaming during emergency calls. Some studies are conducted on this use of video streaming, but further research is needed.

In this study, the investigators have chosen to focus on potential effect from video streaming on bystander first aid for injured patients. The investigators have knowledge from preliminary results that dispatchers often find video streaming useful in emergency calls regarding injuries.

This study will investigate whether the use of video streaming might have an effect on the recognition rate by dispatchers on the need for bystander first aid for injured patients. In addition, the investigators will investigate whether video-instructions from dispatcher can improve bystander first aid quality.

The investigators will be using data collected by ambulance personnel including patients with injuries, as well as data from EMCC journals and audio logs.

Description:

Background:

Emergency Medical Communication Centres (EMCCs) in Norway receive more than 400 000 emergency calls every year, resulting in more than 250 000 ambulance dispatches. Emergency calls are answered by nurses or paramedics with special training, who by audio assesses the situation and decides on a response. Video streaming as a supplement to telephone in EMCC was introduced during springtime 2020 in Norway, and is independent of this study. The intended effect was to improve shared situational awareness between caller and operator, and thus improve the triage process. The video solution is live-only, and caller must give consent. Limited scientific evidence for such use exists, and even if video calls seems commonplace in society, the effects and acceptance in EMCCs has mainly been studied in simulated settings. Preliminary results from the early launch of video streaming showed that injured patients was one of the conditions where the dispatchers seemed to find video streaming useful. Previous studies by Bakke et.al investigating bystander first aid for injured patients, showed a potential for dispatchers in EMCCs to recognize more injured patients with the need for bystander first aid.

Aim:

This study focuses on the effect of video streaming in EMCCs on bystander first aid. The investigators aim to investigate whether dispatchers identifies the need for relevant first aid measures more frequently when using video streaming. The study will be conducted in several health trusts in Norway. In health trusts where video streaming not yet has been implemented in the EMCC, the investigators will collect data from period before video streaming is implemented, and after video streaming is implemented. From some health trusts in the study, video streaming already been implemented, and data collection will hence only be conducted for an after-period.

Methods and population size:

The number needed to treat is based on the studies by Bakke et al, as well it is based on one of our outcome goals: an aim for improvement of correctly identification of need for first aid by EMCC operator from 35% to 50%. Bakke et al included 355 cases during 18 months, which was done in a study area with approximately 270.500 inhabitants. For achievement of power of 0,80 and p-value <0,05 we need each study group to be 169, with the aimed improvement of 15%. Adding an estimate of missing cases of 10%, our study sample size for each group for this outcome measure is estimated to approximately 200 cases. For the outcome goal on quality improvement on first aid, which we aim the effect to be a raise in 20%, there is no aggregated outcome from previous studies to base an improvement on. The investigators therefore base our study sample size on number of cases included in Bakke's study. For this study to reach inclusion of 355 cases and with a study area with 1.150.000 inhabitants, the investigators need four months for each period. In Bakke's study, inclusion criteria were based on ICD-10 from hospital admissions. The investigators are therefore confident that the study will reach a minimum of 355 cases including patients not admitted to hospital as well. Based on these calculations on study sample sizes, the investigators estimate each of the before- and after periods to last 4 months, where cases before video implementation will be compared to calls after, separated by a wash-in period of 1-2 months.

Data collection and analyzes:

Patients will be included by ambulance personnel after the study's inclusion criteria. Ambulance personnel on scene will collect data through an internet-based questionnaire on need for first aid measures and quality of bystander first aid. In addition, data will be collected from EMCC journals and audio logs. This data will contain information on dispatchers recognition of first aid measures, as well as information on prehospital resources and time data. The investigators will also apply for data from the National Trauma Registry. Ambulance personnel participating in the data collection will complete an educational course about the questionnaire. The questionnaire used will be validated in a separate study. Analyzes of primary and secondary outcomes will be executed according to the ITT-principle. Uni- and multivariate regression analysis will be conducted.

Ethics:

The study is assessed by the Regional ethics committee in Norway as outside area of jurisdiction. It is approved by the Norwegian Center for Research Data and the Norwegian Health Directorate.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 174
• Est. completion date: June 30, 2023
• Est. primary completion date: February 28, 2023
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: N/A and older

Eligibility

Inclusion Criteria:

• Patient with an injury,

• One or more bystanders at scene,

• One or more of the following first aid measures have been attempted or should have been attempted: Open airway, bleeding control, recovery position, hypothermia prevention.

Exclusion Criteria:

• The caller is at a different location than the patient

• Patients who are alone on scene and contacted the EMCC themselves

Related Conditions & MeSH terms

• Emergencies
• Injuries

Intervention

Other:
• Video streaming
Video streaming as a supplement to telephone during emergency calls for dispatchers at EMCCs

Locations

Country	Name	City	State
Norway	University of OsloMet	Oslo

Sponsors (7)

Lead Sponsor	Collaborator
Oslo Metropolitan University	Helse Stavanger HF, Laerdal Foundation, Oslo University Hospital, Ostfold Hospital Trust, University Hospital of North Norway, Vestre Viken Hospital Trust

Country where clinical trial is conducted

Norway, 

References & Publications (10)

Bakke HK, Steinvik T, Eidissen SI, Gilbert M, Wisborg T. Bystander first aid in trauma - prevalence and quality: a prospective observational study. Acta Anaesthesiol Scand. 2015 Oct;59(9):1187-93. doi: 10.1111/aas.12561. Epub 2015 Jun 19. — View Citation

Bakke HK, Steinvik T, Ruud H, Wisborg T. Effect and accuracy of emergency dispatch telephone guidance to bystanders in trauma: post-hoc analysis of a prospective observational study. Scand J Trauma Resusc Emerg Med. 2017 Mar 7;25(1):27. doi: 10.1186/s13049-016-0343-z. — View Citation

Bolle SR, Hasvold P, Henriksen E. Video calls from lay bystanders to dispatch centers - risk assessment of information security. BMC Health Serv Res. 2011 Sep 30;11:244. doi: 10.1186/1472-6963-11-244. — View Citation

Ecker H, Lindacher F, Adams N, Hamacher S, Wingen S, Schier R, Bottiger BW, Wetsch WA. Video-assisted cardiopulmonary resuscitation via smartphone improves quality of resuscitation: A randomised controlled simulation trial. Eur J Anaesthesiol. 2020 Apr;37(4):294-302. doi: 10.1097/EJA.0000000000001177. — View Citation

Ecker H, Wingen S, Hamacher S, Lindacher F, Bottiger BW, Wetsch WA. Evaluation Of CPR Quality Via Smartphone With A Video Livestream - A Study In A Metropolitan Area. Prehosp Emerg Care. 2021 Jan-Feb;25(1):76-81. doi: 10.1080/10903127.2020.1734122. Epub 2020 Mar 20. — View Citation

Lee JS, Jeon WC, Ahn JH, Cho YJ, Jung YS, Kim GW. The effect of a cellular-phone video demonstration to improve the quality of dispatcher-assisted chest compression-only cardiopulmonary resuscitation as compared with audio coaching. Resuscitation. 2011 Jan;82(1):64-8. doi: 10.1016/j.resuscitation.2010.09.467. Epub 2010 Oct 30. — View Citation

Lin YY, Chiang WC, Hsieh MJ, Sun JT, Chang YC, Ma MH. Quality of audio-assisted versus video-assisted dispatcher-instructed bystander cardiopulmonary resuscitation: A systematic review and meta-analysis. Resuscitation. 2018 Feb;123:77-85. doi: 10.1016/j.resuscitation.2017.12.010. Epub 2017 Dec 12. — View Citation

Linderoth G, Lippert F, Ostergaard D, Ersboll AK, Meyhoff CS, Folke F, Christensen HC. Live video from bystanders' smartphones to medical dispatchers in real emergencies. BMC Emerg Med. 2021 Sep 6;21(1):101. doi: 10.1186/s12873-021-00493-5. — View Citation

Melbye S, Hotvedt M, Bolle SR. Mobile videoconferencing for enhanced emergency medical communication - a shot in the dark or a walk in the park? -- A simulation study. Scand J Trauma Resusc Emerg Med. 2014 Jun 2;22:35. doi: 10.1186/1757-7241-22-35. — View Citation

Yang CW, Wang HC, Chiang WC, Hsu CW, Chang WT, Yen ZS, Ko PC, Ma MH, Chen SC, Chang SC. Interactive video instruction improves the quality of dispatcher-assisted chest compression-only cardiopulmonary resuscitation in simulated cardiac arrests. Crit Care Med. 2009 Feb;37(2):490-5. doi: 10.1097/CCM.0b013e31819573a5. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Other	Time delay until activation of first ambulance	No increase in time from the emergency call is received until activation of first ambulance unit	Through study completion, an average of 1,5 years
Other	Time delay until need for first aid is recognized by dispatcher	No increase in time from the emergency call is received until need for first aid is recognized by the dispatcher	Through study completion, an average of 1,5 years
Other	30-days mortality for patients included	No increase in 30-days mortality for patients where video streaming was used	Through study completion, an average of 1,5 years
Primary	Dispatchers' recognition of relevant first aid measures	Number of patients where dispatchers in the EMCCs recognizes relevant first aid measures	Through study completion, an average of 1,5 years
Secondary	First aid measures performed by bystander	Number of patients with first aid measures performed by bystander before the arrival of the first ambulance unit	Through study completion, an average of 1,5 years
Secondary	Bystander first aid quality	Number of patients with first aid measures of high quality performed by bystander	Through study completion, an average of 1,5 years