TY - JOUR
T1 - The Feasibility of Measuring Lung Hyperinflation with a Smart Shirt
T2 - An in Vitro Study
AU - Mannee, Denise
AU - Van Helvoort, Hanneke
AU - De Jongh, Frans
N1 - Funding Information:
Manuscript received June 11, 2020; revised July 9, 2020; accepted July 9, 2020. Date of publication July 20, 2020; date of current version November 18, 2020. This work was supported by the Europees Fonds voor Regionale Ontwikkeling (EFRO). The associate editor coordinating the review of this article and approving it for publication was Prof. Subhas C. Mukhopadhyay. (Corresponding author: Denise Mannée.) Denise Mannée and Hanneke van Helvoort are with the Department of Pulmonary Diseases, Radboudumc, 6500 HB Nijmegen, The Netherlands (e-mail: [email protected]).
Publisher Copyright:
© 2001-2012 IEEE.
PY - 2020/12/15
Y1 - 2020/12/15
N2 - Home monitoring of patients with chronic obstructive pulmonary disease can increase quality of life and decrease health care costs. Despite the existence of an important relationship between lung hyperinflation (LH) and patient outcomes, LH is often ignored in home monitoring as it difficult to assess at home. A smart shirt containing respiratory inductance plethysmography (RIP, which measures thoracic and abdominal cross-sectional area changes) is a promising tool for home monitoring of LH. This study investigates the feasibility of a smart shirt to monitor LH. We aimed to describe the relationship between temperature and the output, and between the circumference and output of the smart shirt and to correct for temperature dependency. To do so, the smart shirt was applied to a custom-made torso model. Ambient temperature was increased and decreased in 15 tests, while maintaining a constant torso circumference to derive a temperature correction. Additionally, sensor output was monitored with varying circumference. The results revealed a linear relation between temperature and RIP output. Nine of the twelve shirts showed a linear output to changes in circumference. A median temperature drift of -34.7 mL/°C was observed and corrected to a minimum drift of -0.5 mL/°C. In conclusion, RIP is a promising method for measuring LH in home monitoring. Patients will not be falsely diagnosed with LH due to temperature changes. Sensor output can easily be corrected for temperature. Furthermore, the relationship between circumference and output is linear, confirming the ease of implementing the calibration procedure for obtaining lung volumes.
AB - Home monitoring of patients with chronic obstructive pulmonary disease can increase quality of life and decrease health care costs. Despite the existence of an important relationship between lung hyperinflation (LH) and patient outcomes, LH is often ignored in home monitoring as it difficult to assess at home. A smart shirt containing respiratory inductance plethysmography (RIP, which measures thoracic and abdominal cross-sectional area changes) is a promising tool for home monitoring of LH. This study investigates the feasibility of a smart shirt to monitor LH. We aimed to describe the relationship between temperature and the output, and between the circumference and output of the smart shirt and to correct for temperature dependency. To do so, the smart shirt was applied to a custom-made torso model. Ambient temperature was increased and decreased in 15 tests, while maintaining a constant torso circumference to derive a temperature correction. Additionally, sensor output was monitored with varying circumference. The results revealed a linear relation between temperature and RIP output. Nine of the twelve shirts showed a linear output to changes in circumference. A median temperature drift of -34.7 mL/°C was observed and corrected to a minimum drift of -0.5 mL/°C. In conclusion, RIP is a promising method for measuring LH in home monitoring. Patients will not be falsely diagnosed with LH due to temperature changes. Sensor output can easily be corrected for temperature. Furthermore, the relationship between circumference and output is linear, confirming the ease of implementing the calibration procedure for obtaining lung volumes.
KW - chronic obstructive pulmonary disease
KW - Feasibility
KW - lung hyperinflation
KW - respiratory inductance plethysmography
KW - smart shirt
KW - temperature
KW - 22/2 OA procedure
UR - http://www.scopus.com/inward/record.url?scp=85096794888&partnerID=8YFLogxK
U2 - 10.1109/JSEN.2020.3010265
DO - 10.1109/JSEN.2020.3010265
M3 - Article
AN - SCOPUS:85096794888
SN - 1530-437X
VL - 20
SP - 15154
EP - 15162
JO - IEEE sensors journal
JF - IEEE sensors journal
IS - 24
M1 - 9144201
ER -