期刊
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING
卷 62, 期 11, 页码 2547-2552出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TBME.2015.2459061
关键词
Ballistocardiogram (BCG); blood pressure; cardiac output (CO); continuous monitoring; electrocardiogram (ECG); heart rate (HR); photoplethysmogram (PPG); pre-ejection period (PEP); pulse transit time (PTT); stroke volume (SV)
资金
- Medical Electronic Device Realization Center, Massachusetts Institute of Technology
- MIT Catalyst Clinical Research Center [UL1 RR025758]
This paper presents a wearable vital signs monitor at the ear. The monitor measures the electrocardiogram (ECG), ballistocardiogram (BCG), and photoplethysmogram (PPG) to obtain pre-ejection period (PEP), stroke volume (SV), cardiac output (CO), and pulse transit time (PTT). The ear is demonstrated as a natural anchoring point for the integrated sensing of physiological signals. All three signals measured can be used to obtain heart rate (HR). Combining the ECG and BCG allows for the estimation of the PEP, while combining the BCG and PPG allows for the measurement of PTT. Additionally, the J-wave amplitude of the BCG is correlated with the SV and, when combined with HR, yields CO. Results from a clinical human study on 13 subjects demonstrate this proof-of-concept device.
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