PDF(Pubmed)
Abstract：
OBJECTIVE: There is an increasing number of cuffless blood pressure (BP) measurement (BPM) devices. Despite promising results when comparing single measurements, the ability of these devices to track changes in BP levels over 24 h related to an initial calibration BP (CalibBP) is unknown. Our aim was to analyse this ability in a cuffless device using pulse transit time.
METHODS: We prospectively enrolled 166 participants for simultaneously performed cuffless (Somnotouch-NIBP) and cuff-based (Spacelabs 90217A/IEM Mobil-O-graph) 24 h BPM. As CalibBP for the cuffless device, first cuff-based BP was used. As surrogate for changes in BP levels after the CalibBP, we used the difference between the CalibBP and mean 24 h, awake and asleep BP measured by the two devices. In addition, we analysed the relationship between the difference of the CalibBP and the cuff-based BPM versus the difference between the cuff-based and the cuffless BPM devices.
RESULTS: Mean(SD) difference between the CalibBP and mean 24hBP by the cuff-based or cuffless BP device were 7.4 (13.2) versus 1.8 (8.3) mmHg for systolic ( P < 0.0001) and 6.6 (6.8) versus 1.6 (5.8) mmHg for diastolic ( P < 0.0001). A near linear relationship was seen among the difference between the CalibBP and the cuff-based BPM values and the difference between the cuff-based and cuffless BPM device.
CONCLUSIONS: Our data indicate a lower ability of the cuffless BPM device to track changes of BP levels after CalibBP. In addition, cuffless device accuracy was associated with the changes in BP levels after the initial CalibBP - the larger the BP level change, the larger the difference between the devices.
BACKGROUND: https://www.clinicaltrials.gov ; Unique identifier: NCT03054688; NCT03975582.
METHODS: We prospectively enrolled 166 participants for simultaneously performed cuffless (Somnotouch-NIBP) and cuff-based (Spacelabs 90217A/IEM Mobil-O-graph) 24 h BPM. As CalibBP for the cuffless device, first cuff-based BP was used. As surrogate for changes in BP levels after the CalibBP, we used the difference between the CalibBP and mean 24 h, awake and asleep BP measured by the two devices. In addition, we analysed the relationship between the difference of the CalibBP and the cuff-based BPM versus the difference between the cuff-based and the cuffless BPM devices.
RESULTS: Mean(SD) difference between the CalibBP and mean 24hBP by the cuff-based or cuffless BP device were 7.4 (13.2) versus 1.8 (8.3) mmHg for systolic ( P < 0.0001) and 6.6 (6.8) versus 1.6 (5.8) mmHg for diastolic ( P < 0.0001). A near linear relationship was seen among the difference between the CalibBP and the cuff-based BPM values and the difference between the cuff-based and cuffless BPM device.
CONCLUSIONS: Our data indicate a lower ability of the cuffless BPM device to track changes of BP levels after CalibBP. In addition, cuffless device accuracy was associated with the changes in BP levels after the initial CalibBP - the larger the BP level change, the larger the difference between the devices.
BACKGROUND: https://www.clinicaltrials.gov ; Unique identifier: NCT03054688; NCT03975582.
摘要：
目的：无袖带血压（BP）测量（BPM）设备的数量越来越多。尽管在比较单个测量结果时取得了有希望的结果，这些装置追踪与初始校正BP(CalibBP)相关的24小时内BP水平变化的能力尚不清楚.我们的目标是使用脉冲渡越时间在无袖口设备中分析这种能力。
方法：我们前瞻性招募了166名参与者，同时进行无袖口（Somnotouch-NIBP）和袖口（Spacelabs90217A/IEMMobil-O-graph）24小时BPM。作为无袖口装置的CalibBP，首次使用基于袖带的BP.作为CalibBP后BP水平变化的替代，我们使用CalibBP和平均24小时之间的差值，这两个设备测量的清醒和睡眠血压。此外,我们分析了CalibBP与袖带BPM的差异与袖带BPM装置与无袖带BPM装置的差异之间的关系.
结果：基于袖带或无袖带的血压装置的CalibBP与平均24hBP之间的平均（SD）差异为：收缩压为7.4（13.2）对1.8（8.3）mmHg（P<0.0001），舒张压为6.6（6.8）对1.6（5.8）mmHg（P<0.0001）。在CalibBP和基于袖带的BPM值之间的差异以及基于袖带的BPM装置和无袖带的BPM装置之间的差异之间观察到接近线性关系。
结论：我们的数据表明，无袖口BPM设备在CalibBP后跟踪BP水平变化的能力较低。此外,无袖口装置的准确性与初始CalibBP后的BP水平变化有关-BP水平变化越大，设备之间的差异越大。
背景：https://www.clinicaltrials.gov;唯一标识符:NCT03054688;NCT03975582.
方法：我们前瞻性招募了166名参与者，同时进行无袖口（Somnotouch-NIBP）和袖口（Spacelabs90217A/IEMMobil-O-graph）24小时BPM。作为无袖口装置的CalibBP，首次使用基于袖带的BP.作为CalibBP后BP水平变化的替代，我们使用CalibBP和平均24小时之间的差值，这两个设备测量的清醒和睡眠血压。此外,我们分析了CalibBP与袖带BPM的差异与袖带BPM装置与无袖带BPM装置的差异之间的关系.
结果：基于袖带或无袖带的血压装置的CalibBP与平均24hBP之间的平均（SD）差异为：收缩压为7.4（13.2）对1.8（8.3）mmHg（P<0.0001），舒张压为6.6（6.8）对1.6（5.8）mmHg（P<0.0001）。在CalibBP和基于袖带的BPM值之间的差异以及基于袖带的BPM装置和无袖带的BPM装置之间的差异之间观察到接近线性关系。
结论：我们的数据表明，无袖口BPM设备在CalibBP后跟踪BP水平变化的能力较低。此外,无袖口装置的准确性与初始CalibBP后的BP水平变化有关-BP水平变化越大，设备之间的差异越大。
背景：https://www.clinicaltrials.gov;唯一标识符:NCT03054688;NCT03975582.
