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Fully automatic system for monitoring blood pressure from a toilet-seat using the volume-oscillometric method
Shinobu Tanaka1, Masamichi Nogawa, Ken-Ichi Yamakoshi
1Division of Biological Measurement and Applications Institute and Environmental Technology, Kanazawa University, Kanazawa, 920-8667 Japan (phone: +81-(0)76-234-4736; fax: +81-(0)76-234-4738;
Abstract:
Daily monitoring of health condition at home is very important subject not only as an effective scheme for early diagnosis and treatment of cardiovascular and other diseases, but also for prevention and control of such diseases. From this point of view, we have been developing a fully automated "non-conscious" monitoring system for home health care. In this paper are described, structural detail of a newly developed toilet-seat-installed blood pressure measurement system and some results obtained by the system. Also described is outline of a newly designed system for measuring hydrostatic pressure difference between the heart and the measuring site, i.e., thigh, during blood pressure measurement.
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Equipments Used To Measure Blood Pressure
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
Special considerations while measuring blood pressure
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
Measurement of Blood Pressure
Assessment of blood pressure in brachial artery(one-step method)
Prepare for the Procedure:
Assessment of blood pressure in brachial artery(two-step method)
Sites for measuring blood pressure
The Brachial Artery: Primary Site for Blood Pressure Measurement

