Assessment of pre-ejection period in ambulatory subjects using seismocardiogram in a wearable blood pressure monitor

The ability to monitor arterial blood pressure continuously with unobtrusive body worn sensors may provide a unique and potentially valuable assessment of a patient's cardiovascular health. Pulse wave velocity (PWV) offers an attractive method to continuously monitoring blood pressure. However,...

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Bibliographic Details
Main Authors: Guanqun Zhang, Cottrell, Amber C., Henry, Isaac C., McCombie, Devin B.
Format: Conference Proceeding
Language:English
Subjects:
Biomedical monitoring
Blood pressure
Electrocardiography
Heart
Mobile communication
Monitoring
Vibrations
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Summary:The ability to monitor arterial blood pressure continuously with unobtrusive body worn sensors may provide a unique and potentially valuable assessment of a patient's cardiovascular health. Pulse wave velocity (PWV) offers an attractive method to continuously monitoring blood pressure. However, PWV technologies based on timing measurements between the ECG and a distal PPG suffer from inaccuracies on mobile patients due to the confounding influence of pre-ejection period (PEP). In this paper, we presented a wearable, continuous blood pressure monitor (ViSi Mobile) that can measure and track changes in PEP. PEP is determined from precordial vibrations captured by an accelerometer coupled to the patient's sternum. The performance of the PEP measurements was evaluated on test subjects with postural change and patient activity. Results showed potential to improve cNIBP accuracy in active patients.
ISSN:1557-170X
2694-0604
DOI:10.1109/EMBC.2016.7591454