Can Automated Rate-only CPR Feedback be Detrimental to Chest Compression Depth? A CPR Simulation Study of 141 Untrained Operators

Hannah Torney, Peter O'Hare, Laura Davis, Bruno Delafont, Ben McCartney, Hannah McReynolds, Rebecca Di Maio, Raymond Bond, David McEneaney

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Introduction: A number of public access defibrillators incorporate computerised audio-visual feedback mechanisms to help responders deliver cardiopulmonary resuscitation (CPR) according to current guidelines. A 2013 American Heart Association statement suggested that chest compression fraction (CCF) and compression rate should be prioritised over compression depth, chest recoil and ventilations. This usability study assessed the effect of real-time rate-only feedback on chest compression depth.Methods: Randomly selected users were recruited in a shopping mall (n=141; 15-65+ years) to deliver CPR using a public access defibrillator in a simulated scenario. Participants were randomly assigned one of two devices - (1) with CPR rate feedback in the form of a machine-interface comprising of audio-voice prompts and light emitting diodes; (2) without CPR feedback. Participants were instructed to turn on the device and follow the prompts, with no information on how to perform CPR provided. CPR rate and depth were captured by measuring displacement of a potentiometer contained in a specially designed manikin. The device was connected to the manikin via the electrode leads. The effect of rate-only feedback on compression depth and CPR fraction were assessed.Results: ANCOVA analysis between the two devices provided a mean difference (Standard Error; SE) of 4.52mm (1.38mm) indicating a statistically significant difference (p-value=0.001) between measured CPR depth favouring the device with CPR rate feedback. There was no significant difference in CCF between the devices. ANCOVA analysis provided a mean difference (SE) of 2.9% (1.9%) for the device with CPR rate feedback compared to the device without CPR rate feedback.Conclusion: The incorporation of clear, intuitive, audio-visual machine-interface that delivers CPR feedback can assist trained and untrained users in the optimisation of chest compression rate and maintain a high CCF. In conclusion, CPR rate-only feedback was not detrimental to chest compression depth and suggests rate-only feedback may improve compression depth.
LanguageEnglish
Title of host publicationUnknown Host Publication
Number of pages1
Volume132
Publication statusPublished - 10 Nov 2015
EventResuscitation Science Symposium - Orlando, FL, USA
Duration: 10 Nov 2015 → …

Conference

ConferenceResuscitation Science Symposium
Period10/11/15 → …

Fingerprint

Cardiopulmonary Resuscitation
Thorax
Equipment and Supplies
Manikins
Sensory Feedback
Defibrillators
Ventilation
Electrodes

Keywords

  • Cardiology
  • User Interfaces
  • HCI
  • CPR

Cite this

Torney, H., O'Hare, P., Davis, L., Delafont, B., McCartney, B., McReynolds, H., ... McEneaney, D. (2015). Can Automated Rate-only CPR Feedback be Detrimental to Chest Compression Depth? A CPR Simulation Study of 141 Untrained Operators. In Unknown Host Publication (Vol. 132)
Torney, Hannah ; O'Hare, Peter ; Davis, Laura ; Delafont, Bruno ; McCartney, Ben ; McReynolds, Hannah ; Di Maio, Rebecca ; Bond, Raymond ; McEneaney, David. / Can Automated Rate-only CPR Feedback be Detrimental to Chest Compression Depth? A CPR Simulation Study of 141 Untrained Operators. Unknown Host Publication. Vol. 132 2015.
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title = "Can Automated Rate-only CPR Feedback be Detrimental to Chest Compression Depth? A CPR Simulation Study of 141 Untrained Operators",
abstract = "Introduction: A number of public access defibrillators incorporate computerised audio-visual feedback mechanisms to help responders deliver cardiopulmonary resuscitation (CPR) according to current guidelines. A 2013 American Heart Association statement suggested that chest compression fraction (CCF) and compression rate should be prioritised over compression depth, chest recoil and ventilations. This usability study assessed the effect of real-time rate-only feedback on chest compression depth.Methods: Randomly selected users were recruited in a shopping mall (n=141; 15-65+ years) to deliver CPR using a public access defibrillator in a simulated scenario. Participants were randomly assigned one of two devices - (1) with CPR rate feedback in the form of a machine-interface comprising of audio-voice prompts and light emitting diodes; (2) without CPR feedback. Participants were instructed to turn on the device and follow the prompts, with no information on how to perform CPR provided. CPR rate and depth were captured by measuring displacement of a potentiometer contained in a specially designed manikin. The device was connected to the manikin via the electrode leads. The effect of rate-only feedback on compression depth and CPR fraction were assessed.Results: ANCOVA analysis between the two devices provided a mean difference (Standard Error; SE) of 4.52mm (1.38mm) indicating a statistically significant difference (p-value=0.001) between measured CPR depth favouring the device with CPR rate feedback. There was no significant difference in CCF between the devices. ANCOVA analysis provided a mean difference (SE) of 2.9{\%} (1.9{\%}) for the device with CPR rate feedback compared to the device without CPR rate feedback.Conclusion: The incorporation of clear, intuitive, audio-visual machine-interface that delivers CPR feedback can assist trained and untrained users in the optimisation of chest compression rate and maintain a high CCF. In conclusion, CPR rate-only feedback was not detrimental to chest compression depth and suggests rate-only feedback may improve compression depth.",
keywords = "Cardiology, User Interfaces, HCI, CPR",
author = "Hannah Torney and Peter O'Hare and Laura Davis and Bruno Delafont and Ben McCartney and Hannah McReynolds and {Di Maio}, Rebecca and Raymond Bond and David McEneaney",
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Torney, H, O'Hare, P, Davis, L, Delafont, B, McCartney, B, McReynolds, H, Di Maio, R, Bond, R & McEneaney, D 2015, Can Automated Rate-only CPR Feedback be Detrimental to Chest Compression Depth? A CPR Simulation Study of 141 Untrained Operators. in Unknown Host Publication. vol. 132, Resuscitation Science Symposium, 10/11/15.

Can Automated Rate-only CPR Feedback be Detrimental to Chest Compression Depth? A CPR Simulation Study of 141 Untrained Operators. / Torney, Hannah; O'Hare, Peter; Davis, Laura; Delafont, Bruno; McCartney, Ben; McReynolds, Hannah; Di Maio, Rebecca; Bond, Raymond; McEneaney, David.

Unknown Host Publication. Vol. 132 2015.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Can Automated Rate-only CPR Feedback be Detrimental to Chest Compression Depth? A CPR Simulation Study of 141 Untrained Operators

AU - Torney, Hannah

AU - O'Hare, Peter

AU - Davis, Laura

AU - Delafont, Bruno

AU - McCartney, Ben

AU - McReynolds, Hannah

AU - Di Maio, Rebecca

AU - Bond, Raymond

AU - McEneaney, David

PY - 2015/11/10

Y1 - 2015/11/10

N2 - Introduction: A number of public access defibrillators incorporate computerised audio-visual feedback mechanisms to help responders deliver cardiopulmonary resuscitation (CPR) according to current guidelines. A 2013 American Heart Association statement suggested that chest compression fraction (CCF) and compression rate should be prioritised over compression depth, chest recoil and ventilations. This usability study assessed the effect of real-time rate-only feedback on chest compression depth.Methods: Randomly selected users were recruited in a shopping mall (n=141; 15-65+ years) to deliver CPR using a public access defibrillator in a simulated scenario. Participants were randomly assigned one of two devices - (1) with CPR rate feedback in the form of a machine-interface comprising of audio-voice prompts and light emitting diodes; (2) without CPR feedback. Participants were instructed to turn on the device and follow the prompts, with no information on how to perform CPR provided. CPR rate and depth were captured by measuring displacement of a potentiometer contained in a specially designed manikin. The device was connected to the manikin via the electrode leads. The effect of rate-only feedback on compression depth and CPR fraction were assessed.Results: ANCOVA analysis between the two devices provided a mean difference (Standard Error; SE) of 4.52mm (1.38mm) indicating a statistically significant difference (p-value=0.001) between measured CPR depth favouring the device with CPR rate feedback. There was no significant difference in CCF between the devices. ANCOVA analysis provided a mean difference (SE) of 2.9% (1.9%) for the device with CPR rate feedback compared to the device without CPR rate feedback.Conclusion: The incorporation of clear, intuitive, audio-visual machine-interface that delivers CPR feedback can assist trained and untrained users in the optimisation of chest compression rate and maintain a high CCF. In conclusion, CPR rate-only feedback was not detrimental to chest compression depth and suggests rate-only feedback may improve compression depth.

AB - Introduction: A number of public access defibrillators incorporate computerised audio-visual feedback mechanisms to help responders deliver cardiopulmonary resuscitation (CPR) according to current guidelines. A 2013 American Heart Association statement suggested that chest compression fraction (CCF) and compression rate should be prioritised over compression depth, chest recoil and ventilations. This usability study assessed the effect of real-time rate-only feedback on chest compression depth.Methods: Randomly selected users were recruited in a shopping mall (n=141; 15-65+ years) to deliver CPR using a public access defibrillator in a simulated scenario. Participants were randomly assigned one of two devices - (1) with CPR rate feedback in the form of a machine-interface comprising of audio-voice prompts and light emitting diodes; (2) without CPR feedback. Participants were instructed to turn on the device and follow the prompts, with no information on how to perform CPR provided. CPR rate and depth were captured by measuring displacement of a potentiometer contained in a specially designed manikin. The device was connected to the manikin via the electrode leads. The effect of rate-only feedback on compression depth and CPR fraction were assessed.Results: ANCOVA analysis between the two devices provided a mean difference (Standard Error; SE) of 4.52mm (1.38mm) indicating a statistically significant difference (p-value=0.001) between measured CPR depth favouring the device with CPR rate feedback. There was no significant difference in CCF between the devices. ANCOVA analysis provided a mean difference (SE) of 2.9% (1.9%) for the device with CPR rate feedback compared to the device without CPR rate feedback.Conclusion: The incorporation of clear, intuitive, audio-visual machine-interface that delivers CPR feedback can assist trained and untrained users in the optimisation of chest compression rate and maintain a high CCF. In conclusion, CPR rate-only feedback was not detrimental to chest compression depth and suggests rate-only feedback may improve compression depth.

KW - Cardiology

KW - User Interfaces

KW - HCI

KW - CPR

M3 - Conference contribution

VL - 132

BT - Unknown Host Publication

ER -

Torney H, O'Hare P, Davis L, Delafont B, McCartney B, McReynolds H et al. Can Automated Rate-only CPR Feedback be Detrimental to Chest Compression Depth? A CPR Simulation Study of 141 Untrained Operators. In Unknown Host Publication. Vol. 132. 2015