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  1. Article ; Online: Study of Alarm Threshold for Assumed Nasogastric Tube Self-removal Action Using a Contact Sensor System.

    Matsumura, Aya / Amemiya, Ayumi / Minowa, Takashiro / Ichida, Makoto

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

    2022  Volume 2022, Page(s) 4249–4252

    Abstract: Physical restraints negatively impact the physical, mental, and social well-being of patients. However, elderly people with dementia are often physically restrained by preventing nasogastric tube (NG tube) self-removal. This study aimed to examine alarm ... ...

    Abstract Physical restraints negatively impact the physical, mental, and social well-being of patients. However, elderly people with dementia are often physically restrained by preventing nasogastric tube (NG tube) self-removal. This study aimed to examine alarm threshold settings limited to the actions that the subject makes contact with the NG tube out of feeling uneasy for the NG tube (assumed self-removal actions) using a contact sensor system in order to achieve non-physical restraint. In this study, subjects with experience in caring for older people with dementia were required to perform an assumed self-removal action along with 15 kinds of non-self-removal actions, while we observed the contact detection and measured the voltage. The alarm thresholds for the assumed self-removal action were examined from the ROC curve using the voltage zero time and the number of times the voltage was up and down during each action as a variable. The system presented in this study allowed us to reduce the false alarm rate from 23.3% to 8.5%. Furthermore, we used this alarm threshold to verify the data of three new subjects, observing a false alarm rate of 0.0%. Our future research would focus on investigating and evaluating elderly with dementia using the alarm threshold of the assumed self-removal action that we examined. In addition, we would use ICT to link contact detection with the nurse call system. Clinical Relevance- In this study, we examined the alarm threshold limited to the expected self-removal action using a contact sensor system. We showed that it is possible to detect the NG tube self-removal with few false alarms.
    MeSH term(s) Aged ; Dementia ; Durable Medical Equipment ; Humans ; Restraint, Physical
    Language English
    Publishing date 2022-09-10
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 2694-0604
    ISSN (online) 2694-0604
    DOI 10.1109/EMBC48229.2022.9871854
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Examination of a contact detection sensor to prevent self-removal of peripheral intravenous catheters

    Amemiya, Ayumi / Matsumura, Aya / Kase, Ryutaro / Sugasawa, Yasuhisa / Minowa, Takashiro / Ichida, Makoto

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

    2021  Volume 2021, Page(s) 4965–4968

    Abstract: If patients are at risk of self-removal of a catheter, it is necessary to check the condition of the catheter frequently. If this is the only way to prevent self-removal, physical restraint of the patient is required. Furthermore, it is currently ... ...

    Abstract If patients are at risk of self-removal of a catheter, it is necessary to check the condition of the catheter frequently. If this is the only way to prevent self-removal, physical restraint of the patient is required. Furthermore, it is currently necessary to reduce human-to-human contact to prevent COVID-19 infection. Therefore, the development of a sensor system to prevent self-removal of a catheter and reduce human-to-human contact is urgent. The purpose of this study is to examine a sensor system that detects the contact of a patient's hand to a peripheral intravenous catheter in order to prevent self-removal in patients with dementia. This study analyzes the use of a capacitance sensor and an energization sensor to detect the contact of a patient's hand to a catheter. Additionally, the time required from the start of peeling the sensor sheet to the removal of the needle was measured. As the results, the capacitance sensor was difficult to use in a clinical setting because the connection between the seat and cable could be unstable depending on the condition of the connections. The energization sensor was able to recognize the contact of a hand to the catheter by detecting its contact with the sensor. It took at least 28 seconds from detection of the hand contact to the beginning of needle removal. Therefore, it is possible for the caregiver to visit the patient's bedside and stop the self-removal when the sensor sheet detects hand contact. This study is the first step in developing the system that prevents self-removal by detecting hand contact and requires several more steps for clinical use. In the future, we will conduct surveys on more subjects and clinical trials on elderly with dementia to examine accuracy, precision, and repeatability. Using the energization sensor, a self-removal prevention system for dementia patients will be further developed.Clinical Relevance- Developing this self-removal prevention system in the future will allow many dementia patients to no longer be physically restrained, and it will make it possible to remotely detect their actions to prevent self-removal while also minimizing the risk of COVID-19 infection.
    MeSH term(s) Aged ; COVID-19 ; Catheters ; Hand ; Humans ; SARS-CoV-2 ; Upper Extremity
    Language English
    Publishing date 2021-12-10
    Publishing country United States
    Document type Journal Article
    ISSN 2694-0604
    ISSN (online) 2694-0604
    DOI 10.1109/EMBC46164.2021.9630388
    Database MEDical Literature Analysis and Retrieval System OnLINE

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