PMID- 32937770
OWN - NLM
STAT- MEDLINE
DCOM- 20210326
LR  - 20210326
IS  - 1424-8220 (Electronic)
IS  - 1424-8220 (Linking)
VI  - 20
IP  - 18
DP  - 2020 Sep 14
TI  - Simple Wireless Impedance Pneumography System for Unobtrusive Sensing of 
      Respiration.
LID - 10.3390/s20185228 [doi]
LID - 5228
AB  - This extended paper presents the development and implementation at a prototype 
      level of a wireless, low-cost system for the measurement of the electrical 
      bioimpedance of the chest with two channels using the AD5933 in a bipolar 
      electrode configuration to measure impedance pneumography. The measurement device 
      works for impedance measurements ranging from 1 Omega to 1800 Omega. Fifteen volunteers 
      were measured with the prototype. We found that the left hemithorax has higher 
      impedance compared to the right hemithorax, and the acquired signal presents the 
      phases of the respiratory cycle with variations between 1 Omega, in normal breathing, 
      to 6 Omega in maximum inhalation events. The system can measure the respiratory cycle 
      variations simultaneously in both hemithorax with a mean error of -0.18 +/- 1.42 
      BPM (breaths per minute) in the right hemithorax and -0.52 +/- 1.31 BPM for the 
      left hemithorax, constituting a useful device for the breathing rate calculation 
      and possible screening applications.
FAU - Aqueveque, Pablo
AU  - Aqueveque P
AUID- ORCID: 0000-0001-9101-0383
AD  - Electrical Engineering Department, Faculty of Engineering, Universidad de 
      Concepcion, Edmundo Larenas 219, Concepcion 4070409, Chile.
FAU - Gomez, Britam
AU  - Gomez B
AUID- ORCID: 0000-0001-6563-2955
AD  - Electrical Engineering Department, Faculty of Engineering, Universidad de 
      Concepcion, Edmundo Larenas 219, Concepcion 4070409, Chile.
FAU - Monsalve, Emyrna
AU  - Monsalve E
AD  - Electrical Engineering Department, Faculty of Engineering, Universidad de 
      Concepcion, Edmundo Larenas 219, Concepcion 4070409, Chile.
FAU - Germany, Enrique
AU  - Germany E
AUID- ORCID: 0000-0002-3100-187X
AD  - Electrical Engineering Department, Faculty of Engineering, Universidad de 
      Concepcion, Edmundo Larenas 219, Concepcion 4070409, Chile.
FAU - Ortega-Bastidas, Paulina
AU  - Ortega-Bastidas P
AUID- ORCID: 0000-0002-9333-3036
AD  - Kinesiology Department, Faculty of Medicine, Universidad de Concepcion, Chacabuco 
      1401, Concepcion 4070409, Chile.
FAU - Dubo, Sebastian
AU  - Dubo S
AUID- ORCID: 0000-0002-3206-0433
AD  - Kinesiology Department, Faculty of Medicine, Universidad de Concepcion, Chacabuco 
      1401, Concepcion 4070409, Chile.
FAU - Pino, Esteban J
AU  - Pino EJ
AUID- ORCID: 0000-0002-2636-051X
AD  - Electrical Engineering Department, Faculty of Engineering, Universidad de 
      Concepcion, Edmundo Larenas 219, Concepcion 4070409, Chile.
LA  - eng
GR  - Folio 1201543/CONICYT FONDECYT Regular/
PT  - Letter
DEP - 20200914
PL  - Switzerland
TA  - Sensors (Basel)
JT  - Sensors (Basel, Switzerland)
JID - 101204366
SB  - IM
MH  - *Electric Impedance
MH  - Electrodes
MH  - Humans
MH  - Monitoring, Physiologic/*instrumentation
MH  - *Respiratory Rate
MH  - *Wireless Technology
PMC - PMC7571009
OTO - NOTNLM
OT  - impedance pneumography
OT  - respiration
OT  - wireless
COIS- The authors declare no conflict of interest.
EDAT- 2020/09/18 06:00
MHDA- 2021/03/27 06:00
PMCR- 2020/09/01
CRDT- 2020/09/17 01:02
PHST- 2020/08/18 00:00 [received]
PHST- 2020/09/06 00:00 [revised]
PHST- 2020/09/08 00:00 [accepted]
PHST- 2020/09/17 01:02 [entrez]
PHST- 2020/09/18 06:00 [pubmed]
PHST- 2021/03/27 06:00 [medline]
PHST- 2020/09/01 00:00 [pmc-release]
AID - s20185228 [pii]
AID - sensors-20-05228 [pii]
AID - 10.3390/s20185228 [doi]
PST - epublish
SO  - Sensors (Basel). 2020 Sep 14;20(18):5228. doi: 10.3390/s20185228.