Analysis of cigarette smoking mechanism by real time video-endoscopic documentation

Shoffel‐Havakuk, Hagit; Halperin, Doron; Haimovich, Yaara; Yarkoni, Tom Raz; Cohen, Oded; Hain, Moshe; Lahav, Yonatan

doi:10.3109/08958378.2015.1076545

Cited by 3 publications

(1 citation statement)

References 31 publications

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“…Respiration topography may also be used to study the effects of product characteristics on usage behavior due to variations in flow path restriction. Research has identified two main smoking patterns: mouth-to-lung (MTL) [ 13 ] and direct-to-lung (DTL) [ 14 , 15 ]. MTL is typically associated with cigarette use.…”

Section: Introductionmentioning

confidence: 99%

Feasibility of Using the Hexoskin Smart Garment for Natural Environment Observation of Respiration Topography

Jayasekera

Hensel

Robinson

2021

IJERPH

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Background: Limited research has been done to measure ambulatory respiratory behavior, in particular those associated with tobacco use, in the natural environment due to a lack of monitoring techniques. Respiratory topography parameters provide useful information for modeling particle deposition in the lung and assessing exposure risk and health effects associated with tobacco use. Commercially available Wearable Respiratory Monitors (WRM), such as the Hexoskin Smart Garment, have embedded sensors that measure chest motion and may be adapted for measuring ambulatory lung volume. Methods: Self-reported “everyday” and “some days” Hookah and Cigarette smokers were recruited for a 3-day natural environment observation study. Participants wore the Hexoskin shirt while using their preferred tobacco product. The shirt was calibrated on them prior to, during, and after the observation period. A novel method for calculating the calibration parameters is presented. Results: NH = 5 Hookah and NC = 3 Cigarette participants were enrolled. Calibration parameters were obtained and applied to the observed chest motion waveform from each participant to obtain their lung volume waveform. Respiratory topography parameters were derived from the lung volume waveform. Conclusion: The feasibility of using the Hexoskin for measuring ambulatory respiratory topography parameters in the natural environment is demonstrated.

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Section: Introductionmentioning

confidence: 99%

Feasibility of Using the Hexoskin Smart Garment for Natural Environment Observation of Respiration Topography

Jayasekera

Hensel

Robinson

2021

IJERPH

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Potential Causative Factors for Saccular Disorders: Association with Smoking and Other Laryngeal Pathologies

et al. 2017

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Benchtop Characterization of Wearable Respiratory Monitors for Assessing Feasibility of Measuring Lung Volume

Jayasekera,

Hensel,

Robinson

2023

ASME Open Journal of Engineering

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Objective: This study characterizes three commercially available wearable respiratory monitors (WRMs): (1) Hexoskin Smart Garment, (2) Smartex WWS, and (3) Equivital EQ02 LifeMonitor, each with a unique chest motion sensor technology: respiratory inductance plethysmography, piezoresistor, and strain gauge, respectively. WRMs comprise of a body garment with embedded sensors that measure ambulatory chest motion in real-time. Once calibrated, chest motion waveforms from WRMs can be converted to lung volume waveform, which is then used to derive respiratory topography. The aim of this study is to assess and compare these WRMs in terms of: (i) their response signal to chest motion linearity, which is necessary for successful calibration, and (ii) their ability to measure breath-hold, which is a parameter of interest for lung deposition modeling. Methods: A benchtop test setup was built to simulate chest motion in a controlled way to facilitate comparison across the three devices. A staircase square-wave chest motion profile was used to simultaneously assess both signal linearity and ability to measure breath-hold. The respiratory response from the sensors was compared to the simulated chest motion. Results: The Hexoskin showed the best performance in both metrics, whereas the Equivital had the worst performance in both. The Smartex showed moderate ability to measure breath-hold but poor signal linearity. Conclusion: Of the three WRMs tested, the Hexoskin appears to be the best choice for ambulatory lung volume measurement. Significance: This study demonstrates the feasibility of adapting current technology to observe respiratory behavior valuable in many research domains, including tobacco research.

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Analysis of cigarette smoking mechanism by real time video-endoscopic documentation

Cited by 3 publications

References 31 publications

Feasibility of Using the Hexoskin Smart Garment for Natural Environment Observation of Respiration Topography

Feasibility of Using the Hexoskin Smart Garment for Natural Environment Observation of Respiration Topography

Potential Causative Factors for Saccular Disorders: Association with Smoking and Other Laryngeal Pathologies

Benchtop Characterization of Wearable Respiratory Monitors for Assessing Feasibility of Measuring Lung Volume

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