Dispatcher resuscitation terminology study
| ISRCTN | ISRCTN15128211 |
|---|---|
| DOI | https://doi.org/10.1186/ISRCTN15128211 |
| Secondary identifying numbers | 35062 |
- Submission date
- 07/08/2017
- Registration date
- 08/08/2017
- Last edited
- 14/08/2019
- Recruitment status
- No longer recruiting
- Overall study status
- Completed
- Condition category
- Other
Plain English Summary
Background and study aims
Each year, about 30,000 people in the UK suffer an out-of-hospital cardiac arrest. A cardiac arrest occurs when the heart suddenly stops beating properly. Immediate treatment is essential to prevent death. Patients have the best chance of survival when they receive cardiopulmonary resuscitation (CPR) before the ambulance arrives. The ambulance service can coach people to do this over the phone. At the moment, it is not known which way is the best way to instruct people over the phone to ensure they deliver high-quality CPR. Across international CPR guidelines, there is variation in the wording used to describe how best to perform CPR. The aim of this study is to identify the best way to instruct people how to deliver CPR.
Who can participate?
Adults aged over 18 without recent CPR training
What does the study involve?
Participants perform CPR on a manikin based on instructions similar to those given when the ambulance service instruct people over the phone. They are randomly allocated to one of three groups, which each receive a slightly different instruction regarding how hard to press on the chest (push at least 5cm, push approximately 5cm, or push hard and fast). Participants are asked to deliver CPR to a manikin based on these instructions for two minutes and the quality of CPR delivered to the manikin is measured.
What are the possible benefits and risks of participating?
Findings from this study will inform the wording used in international resuscitation guidelines. There are no significant direct benefits or risks associated with taking part in this study. Participants who agree to take part are offered the opportunity to attend a CPR course. Some participants may experience discomfort in the arms or knees, but this discomfort is short-lived.
Where is the study run from?
Warwick Medical School (UK)
When is the study starting and how long is it expected to run for?
December 2016 to April 2018
Who is funding the study?
Resuscitation Council (UK)
Who is the main contact?
Dr Keith Couper
Contact information
Scientific
Clinical Trials Unit
Warwick Medical School
University of Warwick
Coventry
CV4 7AL
United Kingdom
 ORCID ID |
0000-0003-2123-2022 |
|---|
Study information
| Study design | Randomised; Interventional; Design type: Treatment, Process of Care, Psychological & Behavioural, Physical |
|---|---|
| Primary study design | Interventional |
| Secondary study design | Randomised controlled trial |
| Study setting(s) | Hospital |
| Study type | Treatment |
| Participant information sheet | Not available in web format, please use the contact details to request a patient information sheet |
| Scientific title | In adults delivering CPR, does the use of a specific terminology to instruct cardiopulmonary resuscitation delivery CPR instructions affect CPR quality? A randomised controlled manikin trial |
| Study acronym | DIRECT |
| Study hypothesis | Each year, approximately 30,000 people in the UK suffer an out-of-hospital cardiac arrest. A cardiac arrest occurs when the heart suddenly stops beating properly. Immediate treatment is essential to prevent death. Patients have the best chance of survival when they receive cardiopulmonary resuscitation before the ambulance arrives. In people that have not been trained to do this, the ambulance service can coach people to do this over the phone. At the moment, it is not known which is the best way to instruct people over the phone to ensure they deliver high-quality CPR. Across international CPR guidelines, there is variation in the wording used to describe how best to perform CPR. The aim of this randomised controlled manikin trial is to identify the best way to instruct people how to deliver CPR. |
| Ethics approval(s) | West Midlands - Edgbaston Research Ethics Committee, 04/07/2017, ref: 17/WM/0234 |
| Condition | Specialty: Critical care, Primary sub-specialty: Critical Care; UKCRC code/ Disease: Generic Health Relevance/ No specific disease |
| Intervention | Adults without recent CPR training will be invited to take part. They will perform CPR on a manikin, based on instructions similar to those given when the ambulance service instruct people over the phone. They will be randomised using an internet-based randomisation system (1:1:1 ratio) into three groups, which will each receive a slightly different instruction regarding how hard to press on the chest: Arm 1: chest compression instruction to push “at least 5cm” Arm 2: chest compression instruction to push “approximately 5cm” Arm 3: chest compression instruction to push “hard and fast” They will be asked to deliver CPR to a manikin based on these instructions for two minutes. There will be no follow-up. The quality of CPR delivered to the manikin will be measured. |
| Intervention type | Other |
| Primary outcome measure | Mean chest compression depth, measured using a CPR quality meter during the CPR quality assessment |
| Secondary outcome measures | Measured using a CPR quality meter during the CPR quality assessment: 1. Chest compression rate (min-1) 2. Chest compression count 3. % of chest compessions in target rate range (100-120 compressions per minute) 4. % of chest compressions in target depth range (50-60mm) 5. % delivery of good quality CPR |
| Overall study start date | 22/12/2016 |
| Overall study end date | 30/04/2018 |
Eligibility
| Participant type(s) | Healthy volunteer |
|---|---|
| Age group | Adult |
| Lower age limit | 18 Years |
| Sex | Both |
| Target number of participants | Planned Sample Size: 330; UK Sample Size: 330 |
| Total final enrolment | 330 |
| Participant inclusion criteria | 1. Provision of written informed consent 2. Aged over 18 years |
| Participant exclusion criteria | 1. Physical disability that prevents delivery of CPR for 2 minutes while kneeling on the floor 2. Previous participation in DIRECT study 3. Received practical CPR training in the last 2 years 4. Non-English speaking (to ensure that the information is standardised between groups) 5. NHS employee working in a clinical role |
| Recruitment start date | 31/07/2017 |
| Recruitment end date | 31/12/2017 |
Locations
Countries of recruitment
- England
- United Kingdom
Study participating centre
United Kingdom
Sponsor information
Hospital/treatment centre
Birmingham Heartlands Hospital
Bordesley Green East
Birmingham
B9 5ST
England
United Kingdom
Funders
Funder type
Government
No information available
Results and Publications
| Intention to publish date | 01/10/2018 |
|---|---|
| Individual participant data (IPD) Intention to share | No |
| IPD sharing plan summary | Data sharing statement to be made available at a later date |
| Publication and dissemination plan | Planned publication in a high-impact peer reviewed journal in October 2018. |
| IPD sharing plan | The data sharing plans for the current study are unknown and will be made available at a later date. |
Study outputs
| Output type | Details | Date created | Date added | Peer reviewed? | Patient-facing? |
|---|---|---|---|---|---|
| Protocol file | version V1.0 | 25/05/2017 | 02/04/2019 | No | No |
| Results article | results | 01/09/2019 | 14/08/2019 | Yes | No |
| HRA research summary | 28/06/2023 | No | No |
Additional files
- ISRCTN15128211_PROTOCOL_V1.0_25May2017.pdf
- Uploaded 02/04/2019
Editorial Notes
14/08/2019: The following changes have been made:
1. Publication reference added.
2. The final enrolment number has been added from the reference.
02/04/2019: Uploaded protocol (not peer reviewed).
25/10/2017: The ISRCTN prospective/retrospective flag compares the date of registration with the recruitment start date and does not include any grace period. The registration of this study was requested through the NIHR Portfolio and was finalised within 6 months of the recruitment starting.
