The Effect of T-CPR on the Quality of CPR and AED Use

The Effect of Telephone Assistance on the Quality of Cardiopulmonary Resuscitation and Use of Automated External Defibrillator.

The purpose of the study is to examine the effect of telephone assistance and standardized basic life support courses on the quality of cardiopulmonary resuscitation (CPR) and the use of automated external defibrillator (AED).

The investigators hypothesize that bystanders can provide compressions in correct frequency and use an AED correctly as well as safely from telephone instructions but that correct and successful ventilations including correct open airway require training on a course.

Study Overview

• Status: Completed
• Conditions: Cardiopulmonary Resuscitation; Basic Cardiac Life Support
• Intervention / Treatment: Other: T-CPR; Other: ERC standardized BLS course

Detailed Description

The study aims at answering the following research questions:

1. How is the quality of CPR and use of AED when performed by an inexperienced bystander who receives telephone assistance compared to the quality when performed by a trained bystander, who has passed a standardized European Resuscitation Council (ERC) course in basic life support (BLS) but does not receive telephone assistance?
2. How is the quality of CPR and use of AED when performed by a trained bystander who has passed a standardized ERC course in BLS and who receives telephone assistance compared to the quality when performed by a trained bystander who does not receive telephone assistance?

The questions are sought answered through simulated cardiac arrest scenarios in non-classroom settings.

Participants are recruited from ERC courses in BLS.

Participants are randomised to one of three groups (stratified for course type using computer-generated randomisation lists with blocks of variable sizes):

1. Cardiac arrest scenario test before BLS course with telephone-assistance.
2. Cardiac arrest scenario test after BLS course, no telephone-assistance.
3. Cardiac arrest scenario test after BLS course with telephone-assistance.

• Study Type: Interventional
• Enrollment (Actual): 153
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Denmark
  • Copenhagen, Denmark, 2200
    • Student2Student

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Participant at a European Resuscitation Council standardized basic life support course. Participants are enrolled from courses for university students, courses for elderly and courses for recruits in the Danish Emergency Management Agency.

Exclusion Criteria:

• Basic life support course within the last two years.
• Healthcare professional or background as healthcare professional.
• Instructor in basic life support or first aid.
• Lifeguard or background as lifeguard.
• Does not want to participate.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Other
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: No BLS course. With T-CPR.; The participant is presented for a cardiac arrest scenario before attending the ERC standardized BLS course. During the scenario test, the participant will receive T-CPR.	Other: T-CPR; Participants receive telephone instructions in cardiopulmonary resuscitation (T-CPR) from the Emergency Medical Services in Copenhagen during the cardiac arrest scenario test.
Experimental: With BLS course. No T-CPR.; The participant is presented for a cardiac arrest scenario after completion of the ERC standardized BLS course. During the scenario test, the participant will not receive T-CPR.	Other: ERC standardized BLS course; Participants will receive and complete the standardized course in basic life support (BLS) from European Resuscitation Council (ERC).
Experimental: With BLS course. With T-CPR.; The participant is presented for a cardiac arrest scenario after completion of the ERC standardized BLS course. During the scenario test, the participant will receive T-CPR.	Other: T-CPR; Participants receive telephone instructions in cardiopulmonary resuscitation (T-CPR) from the Emergency Medical Services in Copenhagen during the cardiac arrest scenario test.; Other: ERC standardized BLS course; Participants will receive and complete the standardized course in basic life support (BLS) from European Resuscitation Council (ERC).

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Compression depth	Keeps a compression depth as recommended by International Liaison Committee on Resuscitation (ILCOR) (5-6 cm) on at least 50 % of compressions (yes/no). Measured by advanced manikin.	8 minutes
Compression rate	Rescuer keeps a compression rate of approximately 100-120 compressions per min. throughout the CPR (yes/no). Measured by advanced manikin.	8 minutes
Shock delivered	Shock delivered with AED (yes/no). Assessed by ERC instructor.	8 minutes

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Hands-of time	Relevant actions of resuscitation within more than 75 % of the test time (yes/no). Measured as no flow time by advanced manikin.	8 minutes
Responsiveness	Shakes AND shouts (yes/no). Assessed by ERC instructor.	8 minutes
Open airway	Opens or correctly tries to open mouth (chin lift OR jaw thrust) (yes/no). Assessed by ERC instructor.	8 minutes
Assess breathing	Looks, listens AND feels for normal breathing (yes/no). Assessed by ERC instructor.	8 minutes
Recoil/lean	Full rise on at least 50 % of all compressions (yes/no). Measured by advanced manikin.	8 minutes
Rescue breaths	More than 400 mL for at least 50 % of all ventilations (yes/no). Measured by advanced manikin.	8 minutes
Ratio	Acceptable range 28-32:2 (yes/no). Assessed by ERC instructor.	8 minutes
Activate AED	Activates AED immediately upon arrival (yes/no). Assessed by ERC instructor.	8 minutes
Attachment of AED pads	Correct attachment of AED pads according to the picture in protocol (yes/no). Assessed by ERC instructor.	8 minutes
Stand clear	Ensures safety by looking around and verbally announcing delivery of shock (yes/no). Assessed by ERC instructor.	8 minutes
Compression depth 2	Percentage of compressions with a depth within the recommendations from ILCOR (5-6 cm) (%). Measured by advanced manikin.	8 minutes
Compression rate 2	Average rate of compressions (compressions/minute). Measured by advanced manikin.	8 minutes
Rescue breaths 2	Percentage of ventilations with more than 400 mL (%). Measured by advanced manikin.	8 minutes
Time to first compression	Time from scenario start to first compression. Assessed by ERC instructor.	8 minutes
Hand placement	Correct hand placement in at least 50 % of compressions (yes/no). Measured by advanced manikin.	8 minutes

Collaborators and Investigators

• Sponsor: Copenhagen Academy for Medical Education and Simulation
• Collaborators: University of Southern Denmark; TrygFonden, Denmark; Emergency Medical Services, Capital Region, Denmark
• Investigators: Study Director: Freddy Lippert, Emergency Medical Services, Capital Region, Denmark

Study record dates

Study Major Dates

• Study Start (Actual): September 30, 2018
• Primary Completion (Actual): August 23, 2020
• Study Completion (Actual): August 23, 2020

Study Registration Dates

• First Submitted: September 26, 2018
• First Submitted That Met QC Criteria: September 27, 2018
• First Posted (Actual): October 1, 2018

Study Record Updates

• Last Update Posted (Actual): February 23, 2021
• Last Update Submitted That Met QC Criteria: February 20, 2021
• Last Verified: February 1, 2021

More Information

Terms related to this study

• Other Study ID Numbers: CAMES/AkutBeredskabet_2018_001

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: No

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No