TITLE:
Assessment of Non-Contact Measurement Using a Microwave Sensor to Jugular Venous Pulse Monitoring
AUTHORS:
Satoshi Suzuki, Masaaki Hoshiga, Kentaro Kotani, Takafumi Asao
KEYWORDS:
Microwave Radar, Non-Contact Monitoring, Jugular Venous Pressure, Right Heart Function
JOURNAL NAME:
Journal of Biomedical Science and Engineering,
Vol.14 No.3,
March
10,
2021
ABSTRACT: The jugular venous pulse (JVP) waveform provides an insight into right heart function, and its assessment is important in patients with heart failure. However, the conventional pulse-transducer (contact) method for monitoring this waveform is not frequently used because it requires a high degree of skill. The aim of this study was to confirm the effectiveness of a prototype non-contact system that employs microwave radar (24 GHz, 7 mW; non-contact system) for JVP measurement. Experiments were conducted on eight healthy male volunteers (21.88 ± 0.99 years). JVP measurements were compared between the conventional contact method and the proposed non-contact method. Change in JVP waveform was measured in response to an angle of reclining in five steps from the supine position to 75° of elevation. The obtained JVP measurements were similar between the two methods. Because in the non-contact method the faint pulsation of the JVP is not suppressed by the pressure of a sensor placed on the skin, the prototype microwave radar system is particularly suitable for evaluating the JVP waveform.