Combining Performance of Call EMS and Simultaneous Chest Compressions in a Lone Rescuer CPR

Study Overview
=================
Brief Summary
-----------------
Investigators designed the novel combining technique that rescuer start the chest compression with one hand during calling for help to the Emergency Medical System (EMS) via a cell phone with another hand when he witnessed the arrest victim. This method may be helpful to reduce the hand-off time and increase the faction time of chest compression until the arrival of EMS members. To verify this hypothesis, we conducted a random, controlled simulation study.

Detailed Description
-----------------
This study used a random, controlled design in the simulation setting using a manikin. Study participants were recruited from healthy adult (age > 18 years) laypersons who attended the BLS training courses provided by the BLS training class. The simulation scenario consists of witness of an out of hospital cardiac arrest and activation of the EMS system with the prepared cellular phone. Interventional method contained the immediate starting of the chest compression with one hand during the calling for help to the EMS via a cell phone with another hand. We compare the quality of CPR between the novel interventional method (start CPR during Call to EMS) and conventional method (First Call to EMS and then start CPR).

Official Title
-----------------
A Study of Evaluation of Effectiveness on the Combining Performance of Call Emergency Medical System (EMS) and Simultaneous Chest Compressions With One Hand in a Lone Rescuer CPR: a Simulation Study Using the Manikin

Conditions
-----------------
Out-of-Hospital Cardiac Arrest

Intervention / Treatment
-----------------
* Behavioral: Combi lone-CPR
* Behavioral: Conventional lone-CPR


Participation Criteria
=================
Eligibility Criteria
-----------------
Inclusion Criteria: All healthy volunteers who attended the basic CPR training class Agreement with the simulation trial Exclusion Criteria: volunteers who had some healthy problem which may affect the study results Not agreement with the simulation trial

Ages Eligible for Study
-----------------
Minimum Age: 20 Years
Maximum Age: 65 Years

Sexes Eligible for Study
-----------------
All

Accepts Healthy Volunteers
-----------------
Accepts Healthy Volunteers

Study Plan
=================
How is the study designed?
-----------------

Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Combi lone-CPR<br>Intervention group : Newly developed method | Behavioral: Combi lone-CPR<br>* When study participants meet the arrest victim (simulated), they start chest compression and call for help to EMS at the same time, then continue the chest compression and 2 breath alternatively until the EMS arrival<br>|
| Active Comparator: Conventional lone-CPR<br>Conventional CPR group | Behavioral: Conventional lone-CPR<br>* When study participants meet the arrest victim (simulated), they first call for help to EMS and then start chest compression and 2 breath alternatively until the EMS arrival<br>|

What is the study measuring?
-----------------
Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Total numbers of chest compression with correct depth | correct depth is defined as depth > 50 mm | 3 minutes | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Incomplete release of chest compression |  | 3 minutes | 
| Incorrect position of chest compression |  | 3 minutes | 
| Correct Tidal volume | defined as 500-800 ml in manikin setting | 3 minute | 
| Interruption time of chest compression |  | 3 minutes | 

 Terms related to the study
=================
Keywords Provided by Centre Hospitalier Valida
-----------------
Cardiopulmonary Resuscitation, Emergency Medical Services, Cell phones, Simulation Training