Physiological responses to different CO2 levels in poor ventilation room

Ya Chen Chen; Tzu Chien Hsiao

doi:10.1007/978-3-319-11128-5_106

Physiological responses to different CO₂ levels in poor ventilation room

Ya Chen Chen, Tzu Chien Hsiao^*

^*Corresponding author for this work

Department of Computer Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

6 Scopus citations

Abstract

According to ventilation of acceptable indoor air quality (IAQ), the air carbon dioxide concentration (C_CO2) and air temperature (T_a) increase with human in poor ventilation. The main source of CO2 pollution indoor is human respiration. This study simulates a poor ventilation condition and 10 volunteers participate with non-mask method to study the physiological responses in three C_CO2 levels. Facial temperature (T_f), saturation of percentage oxygen (SpO₂), and electrocardiography (HR) were spontaneously acquired while subjects were inside an airtight room. Analytical results indicate SpO₂ decreased as C_CO2 increased. Those results further demonstrate a positive correlation between C_CO2/HR and C_CO2/T_f, implying that the central-chemoreflex can stimulate the respiratory system since SpO₂ variance and increased HR can promote pulmonary gas exchange. Notably, temperature difference in T_f and T_a increased under low C_CO2 and then reversed and stabilized inference the antagonistic pattern accelerated rapidly initially and decelerated finally stabilized. These findings also imply that the internal body responded to changes in the external environment rapidly, attempted to homeostasis, and reached equilibrium slowly. Variations of C_CO2 and Ta can be modeled by equations. Results of this study prove that IAQ affects physiological responses in the symbiotic relationship between the human body and surrounding environment.

Original language	English
Title of host publication	6th European Conference of the International Federation for Medical and Biological Engineering - MBEC 2014
Editors	Igor Lackovic, Darko Vasic
Publisher	Springer Verlag
Pages	423-426
Number of pages	4
ISBN (Electronic)	9783319111278
DOIs	https://doi.org/10.1007/978-3-319-11128-5_106
State	Published - 2015
Event	6th European Conference of the International Federation for Medical and Biological Engineering, MBEC 2014 - Dubrovnik, Croatia Duration: 7 Sep 2014 → 11 Sep 2014

Publication series

Name	IFMBE Proceedings
Volume	45
ISSN (Print)	1680-0737
ISSN (Electronic)	1433-9277

Conference

Conference	6th European Conference of the International Federation for Medical and Biological Engineering, MBEC 2014
Country/Territory	Croatia
City	Dubrovnik
Period	7/09/14 → 11/09/14

Keywords

Carbon dioxide concentration
Electrocardiography
Facial temperature
Indoor air quality
Poor ventilation room

Access to Document

10.1007/978-3-319-11128-5_106

Cite this

@inproceedings{01f98fd754b140ceb2358db1e6099518,

title = "Physiological responses to different CO2 levels in poor ventilation room",

abstract = "According to ventilation of acceptable indoor air quality (IAQ), the air carbon dioxide concentration (CCO2) and air temperature (Ta) increase with human in poor ventilation. The main source of CO2 pollution indoor is human respiration. This study simulates a poor ventilation condition and 10 volunteers participate with non-mask method to study the physiological responses in three CCO2 levels. Facial temperature (Tf), saturation of percentage oxygen (SpO2), and electrocardiography (HR) were spontaneously acquired while subjects were inside an airtight room. Analytical results indicate SpO2 decreased as CCO2 increased. Those results further demonstrate a positive correlation between CCO2/HR and CCO2/Tf, implying that the central-chemoreflex can stimulate the respiratory system since SpO2 variance and increased HR can promote pulmonary gas exchange. Notably, temperature difference in Tf and Ta increased under low CCO2 and then reversed and stabilized inference the antagonistic pattern accelerated rapidly initially and decelerated finally stabilized. These findings also imply that the internal body responded to changes in the external environment rapidly, attempted to homeostasis, and reached equilibrium slowly. Variations of CCO2 and Ta can be modeled by equations. Results of this study prove that IAQ affects physiological responses in the symbiotic relationship between the human body and surrounding environment.",

keywords = "Carbon dioxide concentration, Electrocardiography, Facial temperature, Indoor air quality, Poor ventilation room",

author = "Chen, {Ya Chen} and Hsiao, {Tzu Chien}",

note = "Publisher Copyright: {\textcopyright} Springer International Publishing Switzerland 2015.; 6th European Conference of the International Federation for Medical and Biological Engineering, MBEC 2014 ; Conference date: 07-09-2014 Through 11-09-2014",

year = "2015",

doi = "10.1007/978-3-319-11128-5_106",

language = "English",

series = "IFMBE Proceedings",

publisher = "Springer Verlag",

pages = "423--426",

editor = "Igor Lackovic and Darko Vasic",

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Chen, YC & Hsiao, TC 2015, Physiological responses to different CO₂ levels in poor ventilation room. in I Lackovic & D Vasic (eds), 6th European Conference of the International Federation for Medical and Biological Engineering - MBEC 2014. IFMBE Proceedings, vol. 45, Springer Verlag, pp. 423-426, 6th European Conference of the International Federation for Medical and Biological Engineering, MBEC 2014, Dubrovnik, Croatia, 7/09/14. https://doi.org/10.1007/978-3-319-11128-5_106

Physiological responses to different CO₂ levels in poor ventilation room. / Chen, Ya Chen; Hsiao, Tzu Chien.
6th European Conference of the International Federation for Medical and Biological Engineering - MBEC 2014. ed. / Igor Lackovic; Darko Vasic. Springer Verlag, 2015. p. 423-426 (IFMBE Proceedings; Vol. 45).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Chen, Ya Chen

AU - Hsiao, Tzu Chien

N1 - Publisher Copyright: © Springer International Publishing Switzerland 2015.

PY - 2015

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N2 - According to ventilation of acceptable indoor air quality (IAQ), the air carbon dioxide concentration (CCO2) and air temperature (Ta) increase with human in poor ventilation. The main source of CO2 pollution indoor is human respiration. This study simulates a poor ventilation condition and 10 volunteers participate with non-mask method to study the physiological responses in three CCO2 levels. Facial temperature (Tf), saturation of percentage oxygen (SpO2), and electrocardiography (HR) were spontaneously acquired while subjects were inside an airtight room. Analytical results indicate SpO2 decreased as CCO2 increased. Those results further demonstrate a positive correlation between CCO2/HR and CCO2/Tf, implying that the central-chemoreflex can stimulate the respiratory system since SpO2 variance and increased HR can promote pulmonary gas exchange. Notably, temperature difference in Tf and Ta increased under low CCO2 and then reversed and stabilized inference the antagonistic pattern accelerated rapidly initially and decelerated finally stabilized. These findings also imply that the internal body responded to changes in the external environment rapidly, attempted to homeostasis, and reached equilibrium slowly. Variations of CCO2 and Ta can be modeled by equations. Results of this study prove that IAQ affects physiological responses in the symbiotic relationship between the human body and surrounding environment.

AB - According to ventilation of acceptable indoor air quality (IAQ), the air carbon dioxide concentration (CCO2) and air temperature (Ta) increase with human in poor ventilation. The main source of CO2 pollution indoor is human respiration. This study simulates a poor ventilation condition and 10 volunteers participate with non-mask method to study the physiological responses in three CCO2 levels. Facial temperature (Tf), saturation of percentage oxygen (SpO2), and electrocardiography (HR) were spontaneously acquired while subjects were inside an airtight room. Analytical results indicate SpO2 decreased as CCO2 increased. Those results further demonstrate a positive correlation between CCO2/HR and CCO2/Tf, implying that the central-chemoreflex can stimulate the respiratory system since SpO2 variance and increased HR can promote pulmonary gas exchange. Notably, temperature difference in Tf and Ta increased under low CCO2 and then reversed and stabilized inference the antagonistic pattern accelerated rapidly initially and decelerated finally stabilized. These findings also imply that the internal body responded to changes in the external environment rapidly, attempted to homeostasis, and reached equilibrium slowly. Variations of CCO2 and Ta can be modeled by equations. Results of this study prove that IAQ affects physiological responses in the symbiotic relationship between the human body and surrounding environment.

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