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Development of a portable non-invasive swallowing and respiration assessment device.

Shieh WY, Wang CM, Chang CS - Sensors (Basel) (2015)

Bottom Line: All signals are received and processed for swallowing event recognition.A total of 19 volunteers participated in the testing and over 57 measurements were made.The results show that the proposed approach can effectively distinguish the swallowing function in people of different ages and genders.

View Article: PubMed Central - PubMed

Affiliation: Department of Computer Science and Information Engineering, Chang Gung University, No. 259, Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan 333, Taiwan. wyshieh@mail.cgu.edu.tw.

ABSTRACT
Dysphagia is a condition that happens when a person cannot smoothly swallow food from the mouth to the stomach. It causes malnourishment in patients, or can even cause death due to aspiration pneumonia. Recently, more and more researchers have focused their attention on the importance of swallowing and respiration coordination, and the use of non-invasive assessment systems has become a hot research trend. In this study, we aimed to integrate the timing and pattern monitoring of respiration and swallowing by using a portable and non-invasive approach which can be applied at the bedside in hospitals or institutions, or in a home environment. In this approach, we use a force sensing resistor (FSR) to detect the motions of the thyroid cartilage in the pharyngeal phase. We also use the surface electromyography (sEMG) to detect the contraction of the submental muscle in the oral phase, and a nasal cannula to detect nasal airflow for respiration monitoring during the swallowing process. All signals are received and processed for swallowing event recognition. A total of 19 volunteers participated in the testing and over 57 measurements were made. The results show that the proposed approach can effectively distinguish the swallowing function in people of different ages and genders.

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Related in: MedlinePlus

Micro-Electro-Mechanical sensors: (a) accelerometer; (b) piezoelectric sensors; (c) force sensing resistor.
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sensors-15-12428-f001: Micro-Electro-Mechanical sensors: (a) accelerometer; (b) piezoelectric sensors; (c) force sensing resistor.

Mentions: Some researchers have applied the Micro-Electro-Mechanical Systems (MEMs) sensors to measure oropharyngeal dysphagia [5,12]. The most widely used sensors for this purpose are accelerometers and pressure sensors, especially those based on the piezoelectric effect. We take the sensor in Figure 1a for example. Figure 1a shows a three-axis capacitive accelerometer which can perform static or dynamic acceleration measurements. The study of Lee et al. [12] pasted an accelerometer on a subject’s throat to measure the upward and downward motions of the thyroid cartilage when the subject swallowed water (or food). The studies reported in [1,5,12] proposed similar approaches. Using an accelerometer, however, has an obvious drawback. That is, the measurement results will suffer signal interference from the subject’s head or trunk shaking. Although there are other accelerometers which only measure vibrations, they cannot measure the force exerted by the thyroid cartilage.


Development of a portable non-invasive swallowing and respiration assessment device.

Shieh WY, Wang CM, Chang CS - Sensors (Basel) (2015)

Micro-Electro-Mechanical sensors: (a) accelerometer; (b) piezoelectric sensors; (c) force sensing resistor.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4507683&req=5

sensors-15-12428-f001: Micro-Electro-Mechanical sensors: (a) accelerometer; (b) piezoelectric sensors; (c) force sensing resistor.
Mentions: Some researchers have applied the Micro-Electro-Mechanical Systems (MEMs) sensors to measure oropharyngeal dysphagia [5,12]. The most widely used sensors for this purpose are accelerometers and pressure sensors, especially those based on the piezoelectric effect. We take the sensor in Figure 1a for example. Figure 1a shows a three-axis capacitive accelerometer which can perform static or dynamic acceleration measurements. The study of Lee et al. [12] pasted an accelerometer on a subject’s throat to measure the upward and downward motions of the thyroid cartilage when the subject swallowed water (or food). The studies reported in [1,5,12] proposed similar approaches. Using an accelerometer, however, has an obvious drawback. That is, the measurement results will suffer signal interference from the subject’s head or trunk shaking. Although there are other accelerometers which only measure vibrations, they cannot measure the force exerted by the thyroid cartilage.

Bottom Line: All signals are received and processed for swallowing event recognition.A total of 19 volunteers participated in the testing and over 57 measurements were made.The results show that the proposed approach can effectively distinguish the swallowing function in people of different ages and genders.

View Article: PubMed Central - PubMed

Affiliation: Department of Computer Science and Information Engineering, Chang Gung University, No. 259, Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan 333, Taiwan. wyshieh@mail.cgu.edu.tw.

ABSTRACT
Dysphagia is a condition that happens when a person cannot smoothly swallow food from the mouth to the stomach. It causes malnourishment in patients, or can even cause death due to aspiration pneumonia. Recently, more and more researchers have focused their attention on the importance of swallowing and respiration coordination, and the use of non-invasive assessment systems has become a hot research trend. In this study, we aimed to integrate the timing and pattern monitoring of respiration and swallowing by using a portable and non-invasive approach which can be applied at the bedside in hospitals or institutions, or in a home environment. In this approach, we use a force sensing resistor (FSR) to detect the motions of the thyroid cartilage in the pharyngeal phase. We also use the surface electromyography (sEMG) to detect the contraction of the submental muscle in the oral phase, and a nasal cannula to detect nasal airflow for respiration monitoring during the swallowing process. All signals are received and processed for swallowing event recognition. A total of 19 volunteers participated in the testing and over 57 measurements were made. The results show that the proposed approach can effectively distinguish the swallowing function in people of different ages and genders.

Show MeSH
Related in: MedlinePlus