2016 Volume 54Annual Issue 28PM-Abstract Pages S392
In the field of sports medicine, non-invasive blood pressure (BP) measurement during exercise is important. However, mainly because of the intense motion artifact, it is quite difficult to precisely measure BP using conventional sphygmomanometers.
In order to solve this practical problem, we have been trying to measure BP in external auditory canal (EAC)expecting less motion artifact effect comparing to the conventional measuring sites such as arm and wrist.
Firstly, we examined morphology of arteries around EAC using MRI and confirmed that the superficial temporal artery could be a suitable target for photoplethysmographic (PPG) pulse detection. Then, we newly designed an ear probe with reflectance type PPG sensor and evaluated availability of EAC as BP measuring site. From the result obtained, it was confirmed that PPG amplitude changed with increase or decrease of applying pressure, and that mean and systolic BP could be determined based on the Volume-Oscillometric method.
