A Novel Photoplethysmography Sensor for Vital Signs Monitoring from the Human Trachea

Current pulse oximeter sensors can be challenged in working accurately and continuously in situations of reduced periphery perfusion, especially among anaesthetised patients. A novel tracheal photoplethysmography (PPG) sensor has been developed in an effort to address the limitations of current puls...

Full description

Saved in:
Bibliographic Details
Published in:Biosensors (Basel) 2019-10, Vol.9 (4), p.119
Main Authors: May, James M, Phillips, Justin P, Fitchat, Tracey, Ramaswamy, Shankar, Snidvongs, Saowarat, Kyriacou, Panayiotis A
Format: Article
Language:English
Subjects:
Adult
Biosensing Techniques
Circuit boards
Clinical trials
Feasibility studies
Female
Humans
Intubation
Light emitting diodes
Male
Middle Aged
Monitoring
Monitoring, Physiologic - instrumentation
Monitoring, Physiologic - methods
Oximetry
Oximetry - instrumentation
Oximetry - methods
Oxygen content
Patients
Perfusion
photoplethysmography
Photoplethysmography - instrumentation
Photoplethysmography - methods
Portable computers
Printed circuits
Pulse oximetry
Pulse rate
sensing endotracheal tube
Sensors
Signal processing
Signal Processing, Computer-Assisted
Software
Telemedicine
Trachea
Vital Signs
vital signs monitoring
Wavelengths
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Current pulse oximeter sensors can be challenged in working accurately and continuously in situations of reduced periphery perfusion, especially among anaesthetised patients. A novel tracheal photoplethysmography (PPG) sensor has been developed in an effort to address the limitations of current pulse oximeters. The sensor has been designed to estimate oxygen saturation (SpO ) and pulse rate, and has been manufactured on a flexible printed circuit board (PCB) that can adhere to a standard endotracheal (ET) tube. A pilot clinical trial was carried out as a feasibility study on 10 anaesthetised patients. Good quality PPGs from the trachea were acquired at red and infrared wavelengths in all patients. The mean SpO reading for the ET tube was 97.1% (SD 1.0%) vs. the clinical monitor at 98.7% (SD 0.7%). The mean pulse rate for the ET sensor was 65.4 bpm (SD 10.0 bpm) vs. the clinical monitor at 64.7 bpm (SD 9.9 bpm). This study supports the hypothesis that the human trachea could be a suitable monitoring site of SpO and other physiological parameters, at times where the periphery circulation might be compromised.
ISSN:2079-6374
2079-6374
DOI:10.3390/bios9040119