Development of Smart-Ring-Based Chest Compression Depth Feedback Device for High Quality Chest Compressions: A Proof-of-Concept Study

Seungjae Lee,Jaehoon Oh,Jongshill Lee,Tae Ho Lim,In Young Kim,Chiwon Ahn,Yeongtak Song

doi:10.3390/bios11020035

Seungjae Lee, Jaehoon Oh + Show 5 more

Open Access

https://doi.org/10.3390/bios11020035

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Journal: Biosensors	Publication Date: Jan 28, 2021
Citations: 8	License type: CC BY 4.0

Affiliation: Hanyang University, Chung-Ang University

Abstract

Recently, a smart-device-based chest compression depth (CCD) feedback system that helps ensure that chest compressions have adequate depth during cardiopulmonary resuscitation (CPR) was developed. However, no CCD feedback device has been developed for infants, and many feedback systems are inconvenient to use. In this paper, we report the development of a smart-ring-based CCD feedback device for CPR based on an inertial measurement unit, and propose a high-quality chest compression depth estimation algorithm that considers the orientation of the device. The performance of the proposed feedback system was evaluated by comparing it with a linear variable differential transformer in three CPR situations. The experimental results showed compression depth errors of 2.0 ± 1.1, 2.2 ± 0.9, and 1.4 ± 1.1 mm in the three situations. In addition, we conducted a pilot test with an adult/infant mannequin. The results of the experiments show that the proposed smart-ring-based CCD feedback system is applicable to various chest compression methods based on real CPR situations.

Highlights

Cardiopulmonary resuscitation (CPR) is an emergency procedure for manually preserving brain function until further measures can be taken to restore spontaneous blood circulation and breathing in a person in cardiac arrest
We developed a ring-type wearable system based on inertial measurement units (IMUs) to provide depth information during CPR
We describe the results in two parts

Summary

Introduction

Cardiopulmonary resuscitation (CPR) is an emergency procedure for manually preserving brain function until further measures can be taken to restore spontaneous blood circulation and breathing in a person in cardiac arrest. Various CPR feedback devices have been developed and used [3]. These devices measure chest compression depth (CCD) based on an accelerometer, a pressure sensor, or a combination of two sensors. Several studies have shown that feedback devices improve CCD in simulated cardiac arrest [4,5,6]. According to recent CPR guidelines, it is reasonable to use audiovisual feedback devices during CPR for real-time performance optimization [7]

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Conclusion