PP.01.23] A NOVEL METHOD FOR MEASURING BLOOD PRESSURE USING BY A PHOTIC SENSOR MODULE

Abstract

Objective: Mercury sphygmomanometer has been the gold standard for measuring blood pressure noninvasively. However, it requires the trained auscultatory technique, proper positioning of the patient and selection of cuff size. We need a easy to use accurate measuring device as there is increasing evidence that Twenty-four-hour ambulatory monitoring gives a better prediction of risk. There have several studies for the continuous blood pressure monitoring with cuff-less measuring device which uses a photic sensor and calculate the pulse wave. Purpose of this study is to validate the photic sensor module of near infrared as a new method for measuring the blood pressure. Design and method: Subjects: young group: sixty five university students (male / female: 29 / 36, mean age 20.4) middle age group: Twenty nine middle Age workers (male / female: 26/ 3, mean age 51.2) Methods: We placed our new photic sensor module (AG sensor Prot.2 ALPS ELECTRIC CO., LTD, Tokyo, Japan and Genial Light. co.,LTD, Hamamatsu, Japan) near the stethoscope where the arterial pulsation in the subject's right upper arm palpation of the brachial artery in the antecubital fossa. The photic sensor measured the pulse an d calculated the bool pressure value continously. We read the value which calculated by the photic sensor before and after the cuff compression. We conducted these procedure twice for each subject. We average each data and compare the data measured by mercury sphygmomanometer and our photic sensor. Results: Averaged blood presure estimateb by both mercury sphygmomanometer and photic sensor module showed in table1.Conclusions: This study showed that our new cuff-less device using the photic sensor can estimate the blood pressure with high accuracy. We need many data not only healthy subjects but hyper blood pressure subjects however our new photic device suggests utility in the assessment of the blood pressure as a home monitoring tool.