Validation of a sheet-shaped body vibrometer for screening of obstructive sleep apnea

Kogure, Takamasa; Kobayashi, Mina; Okawa, Takashi; Nakajima, Tsuneya; Inoue, Yuichi

doi:10.5582/ddt.2017.01015

Cited by 11 publications

(12 citation statements)

References 28 publications

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“…The outcome of the present study was vital sign values (RR, HR, and apnea) per hour until death, measured by a non‐wearable monitor (Nemuri SCAN, Paramount Bed Co., Ltd.) placed under the mattress of the participants 11,12 . The Nemuri SCAN detected the RR, HR, and apnea events by measuring the participants’ body movements every minute.…”

Section: Methodsmentioning

confidence: 99%

The change over time of vital signs with consideration for opioid use in the last 2 weeks of life among cancer patients in a palliative care unit: Continuous measurement of vital signs using a non‐wearable monitor

Tanaka

Fukui

Maeda³

et al. 2021

Cancer Medicine

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Objectives The aim of this study was to examine the following by using a non‐wearable monitor: (ⅰ) the trajectory of vital signs (VS) in the last 2 weeks of life among cancer patients, and (ⅱ) the difference in change over time of VS between cancer patients with and without opioid use. Methods We conducted a longitudinal study involving cancer patients in a palliative care unit (PCU) from April 2018 to October 2019. VS were collected continuously using a non‐wearable monitor, and we calculated the means of respiratory rate (RR) and heart rate (HR) per hour, and counts of apnea per hour as outcome variables. Explanatory variables were time (subtracting time of death from measurement time of VS, divided by 36) and opioid use. Mean difference (MD) of time represented the slope per hour of VS values. First, we analyzed the associations between VS per hour and time using a linear mixed model (LMM) with random intercepts and slope over time. Second, we analyzed the associations between VS and interaction term between time and opioid use. Results We analyzed 26 cancer patients. RR (MD: 0.27 beats/min [95% CI: 0.27–0.28]), HR (MD: 1.51 beats/min [95% CI: 1.50–1.52]), and apnea (MD: 0.71 count/hour [95% CI: 0.70–0.72]) significantly increased hourly. In addition, RR was significantly associated with interaction term (MD: −1.59 beats/min [95% CI: −3.11 to −0.07]), which indicates that there is a difference in the slope of RR between opioid users and non‐users. Conclusions We have successfully described the trajectory of VS in high‐resolution under conditions of a natural end of life in PCU.

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Section: Methodsmentioning

confidence: 99%

The change over time of vital signs with consideration for opioid use in the last 2 weeks of life among cancer patients in a palliative care unit: Continuous measurement of vital signs using a non‐wearable monitor

Tanaka

Fukui

Maeda³

et al. 2021

Cancer Medicine

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“…The SBV is placed under a mattress for use. Studies conducted on adults have shown that SBV can measure heart rate and respiratory rate [7] determine whether a subject is asleep, awake, or away from the bed [8] and perform rough estimation of itch severity [9] based on body motion; and detect moderate or severe obstructive sleep apnea syndrome based on changes in respiratory movement [10]. The SBV was placed on beds of NICU neonates/infants for 24 hours.…”

Section: Methodsmentioning

confidence: 99%

Experience with the use of a sheet-shaped body vibrometer in infants admitted to the neonatal intensive care unit

Kemmochi¹,

Kogure²,

Kaneko³

et al. 2019

J Transl Sci

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“…1). 21,22 In this study, we focused on two vital signs, respiratory rate and heart rate, because these data were automatically gathered every minute by the Nemuri SCAN device, and created a dataset of the mean, maximum, minimum, and variance of respiratory rate and heart rate every 24 hours up to death for each patient, each calculated from monitoring data every minute.…”

Section: Main Independent Variables Measured By a Monitormentioning

confidence: 99%

“…14,19,20 In contrast, a sheet-type device that can ensure the reliability and validity of vital sign measurement using a non-wearable monitor has recently been reported. 21,22 If this non-wearable monitor can continuously measure vital signs without imposing a burden on the patient prior to death, it may be possible to assess the patient's condition in detail. Additionally, if we con rmed the association between continuously measured respiratory and heart rates assessed with a non-wearable monitor and the determination of prognosis, it may be more advantageous than previous clinical practices which did not monitor the vital signs continuously.…”

Section: Introductionmentioning

confidence: 99%

Association between respiratory and heart rate fluctuations and death occurrence in dying cancer patients: continuous measurement with a non-wearable monitor

Fukui

Ikuta

Maeda³

et al. 2021

Support Care Cancer

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Background: The cancer deaths at home and in care facilities are increasing worldly. If we can identify imminent death using a monitoring device and inform it to family members and care staff, it will help them, even in the absence of healthcare professionals at all times. We examined the association between impending death and continual changes in respiratory and heart rates measured by a non-wearable monitor every minute for the nal 2 weeks of dying cancer patients. In this longitudinal study, we enrolled patients in a palliative-care-unit and continuously measured their respiratory/heart rates by a monitor, capturing their other vital signs and clinical status from medical records.Result: A dataset was created with 240 patient-days from every minute data to death (345,600 data) among 24 patients for 3-14 days to death. We analyzed this 240 patient-day data. After con rming the associations between the value of death day (n=24) or other days (2-14 days before death, n=216) and the mean, maximum, minimum, and variance of respiratory and heart rates every 24 hours by univariate analyses, we conducted a repeated measures logistic regression analysis using a generalized estimating equation. Finally, the maximum respiratory rate and mean heart rate were signi cantly associated with death at 24, 48, and 72 hours later, other than the respiratory rate of the last 24 hours. Conclusion:The maximum respiratory rate and mean heart rate measured every minute by a monitor can warn imminent death during the last days of life among dying patients. Our ndings can help for caregivers to aware imminent death among dying patients at home or in facilities, in collaboration with palliative care professionals.

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Validation of a sheet-shaped body vibrometer for screening of obstructive sleep apnea

Cited by 11 publications

References 28 publications

The change over time of vital signs with consideration for opioid use in the last 2 weeks of life among cancer patients in a palliative care unit: Continuous measurement of vital signs using a non‐wearable monitor

The change over time of vital signs with consideration for opioid use in the last 2 weeks of life among cancer patients in a palliative care unit: Continuous measurement of vital signs using a non‐wearable monitor

Experience with the use of a sheet-shaped body vibrometer in infants admitted to the neonatal intensive care unit

Association between respiratory and heart rate fluctuations and death occurrence in dying cancer patients: continuous measurement with a non-wearable monitor

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