Abstract
Clinically, blood pressure and pulse wave are very important vital signs of a patient, and sometimes continuous, 24-hours-a-day monitoring of these sings is required. However, most existing equipment is cumbersome for a long time use and can be painful and the accuracy of the measurements need improvement. Thus, we developed a new system which is capable of measuring both blood pressure fluctuation and pulse without being burdensome to the patient, the new system uses a photo sensor and the phase shift method which provides for a very high sensitivity. We tested the new system on several patients and compared the measurements to data from an electrocardiogram. Results show that the new system provide more accurate data than of existing equipment and is easier on the patient.
