Why the study?
Can a wearable blood pressure monitor using seismocardiogram accurately measure pre-ejection period to improve continuous non-invasive blood pressure monitoring in ambulatory subjects?
Can a wearable blood pressure monitor using seismocardiogram accurately measure pre-ejection period to improve continuous non-invasive blood pressure monitoring in ambulatory subjects?
A wearable blood pressure monitor using seismocardiography to measure pre-ejection period may improve the accuracy of continuous non-invasive blood pressure monitoring in active patients.
Hypothesis-generating for ambulatory cNIBP; leaves open clinical adoption pending validation trials.
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.
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Zhang et al. (2016) studied this question.