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| Name | Class |
|---|---|
| TrygFonden, Denmark | INDUSTRY |
| Emergency Medical Services, Capital Region, Denmark | OTHER_GOV |
| University of Southern Denmark | OTHER |
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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.
The study aims at answering the following research questions:
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):
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| No BLS course. With T-CPR. | Experimental | 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. |
|
| With BLS course. No T-CPR. | Experimental | 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. |
|
| With BLS course. With T-CPR. | Experimental | 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. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| T-CPR | Other | Participants receive telephone instructions in cardiopulmonary resuscitation (T-CPR) from the Emergency Medical Services in Copenhagen during the cardiac arrest scenario test. |
| 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 |
| 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. |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Freddy Lippert | Emergency Medical Services, Capital Region, Denmark | Study Director |
| Doris Oestergaard | Copenhagen Academy for Medical Education and Simulation | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Student2Student | Copenhagen | 2200 | Denmark |
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Parallel Assignment
Participants are randomized to one of three groups (stratified for course type, using computer-generated lists with variable block sizes):
Participants are given a cardiac arrest scenario test either before or after a European Resuscitation Council standardized basic life support course. Two of the groups receive instructions in cardiopulmonary resuscitation from a dispatcher when they call the Emergency Medical Services.
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| ERC standardized BLS course | Other | Participants will receive and complete the standardized course in basic life support (BLS) from European Resuscitation Council (ERC). |
|
| 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 |