Comparison of the Quality of CPR by Lay Rescuers With and Without Feedback Devices (frequenz)

Comparison of the Quality of CPR by Lay Rescuers With and Without Telephone Instructions by a Simulated Rescue Coordination Center

Comparison of various methods to improve the quality of CPR

Study Overview

• Status: Unknown
• Conditions: Cardiac Arrest
• Intervention / Treatment: Device: PocketCPR; Device: Metronome; Device: 110bpm Song

Detailed Description

Even for paramedics and emergency physicians, the resuscitation of patients with cardiac arrest remains a challenge. Previous studies have shown that the cardiac output varies widely even among professional helpers. This is especially due to some very different mean frequencies of cardiac compression wich vary from 60 to 160/min for paramedics. Aim of this study is to investigate whether the use of feedback-devices during cardiac-pulmonary resuscitation (CPR) can lead to an improvement of the cardiac output and may improve survival.

For this, we examine the impact of different feedback-methods on the frequence-variety on manikin by lay rescuers. Overall, we compare three different devices for feedback during CPR. The subjects for this study are lay rescuers who perform a 5 minute chest-compression-only CPR.

• Study Type: Interventional
• Enrollment (Anticipated): 240
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Germany
  • Köln, Germany, 50937
    • Recruiting
    • Uniklinik Koln
    • Principal Investigator: Jochen Hinkelbein, MD
    • Contact: Stefan Braunecker, MD; Phone Number: 0221-478-97729; Email: stefan.braunecker@uk-koeln.de
    • Principal Investigator: Stefan Braunecker, MD

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 60 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• lay rescuers
• >18 years
• <60 years

Exclusion Criteria:

• professional rescuers
• pregnancy

Study Plan

How is the study designed?

Design Details

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

Number of Arms

4

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
No Intervention: Control; 5 minutes chest-compression-only CPR, without any support
Experimental: PocketCPR; 5 minutes chest-compression-only CPR, with support	Device: PocketCPR; 5 minutes chest-compression-only CPR, using Zoll PocketCPR
Experimental: Metronome; 5 minutes chest-compression-only CPR, with support	Device: Metronome; 5 minutes chest-compression-only CPR, using a metronome
Experimental: 110bpm Song; 5 minutes chest-compression-only CPR, with support	Device: 110bpm Song; 5 minutes chest-compression-only CPR, using a song with 110bpm for support

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
The average achieved cardiac output	The main goal of the study is the average achieved cardiac output. Data acquisition is carried out on a resuscitation-manikin which can measure compression-rate (CR) and compression-depth (CD). The data are recorded by a computer during the CPR. To calculate the cardiac output, we multiply the average CR [1/min] with the average CD [mm] during the 5 min manikin-resuscitation. The thus obtained average cardiac-output (CO = CR x CD), measured in [mm/min], will be compared in each group.	after 5 minutes

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Constancy of the quality of chest-compressions	Second objective of the study is the variation of the compression-rate and the compression-depth during the resuscitation. We compare the average compression-rate and compression-depth of the first 30 compressions and the last 30 compression of every participant. As a result, the average standard deviation in each group will be calculated. Afterward, the groups will be compared using the mean deviation of every group. The mean deviation will be measured in +/-[mm] for compression-depth and +/-[1/min] for compression rate.	after 5 minutes

Collaborators and Investigators

• Sponsor: University Hospital of Cologne
• Investigators: Principal Investigator: Stefan Braunecker, MD, University Hospital Cologne; Study Director: Jochen Hinkelbein, MD, University Hospital Cologne

Study record dates

Study Major Dates

• Study Start: November 1, 2013
• Primary Completion (Anticipated): December 1, 2015
• Study Completion (Anticipated): February 1, 2016

Study Registration Dates

• First Submitted: November 17, 2013
• First Submitted That Met QC Criteria: November 26, 2013
• First Posted (Estimate): December 4, 2013

Study Record Updates

• Last Update Posted (Estimate): May 5, 2015
• Last Update Submitted That Met QC Criteria: May 2, 2015
• Last Verified: May 1, 2015

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Heart Diseases; Cardiovascular Diseases; Heart Arrest
• Other Study ID Numbers: 10-333