A Novel Method for Korotkoff Vibration Blood Pressure Measurement Based on Oscillometric

The aim of this study is to confirm systolic blood pressure(SBP) and diastolic blood pressure(DBP) based on oscillometric method. The approach can get an accurate MAP, accessible to SBP and DBP simultaneously using Korotkoff vibration instead of the traditional sound signal. Experiments were conducted on healthy, non-smoking and normotensive subjects. The cuff pressure, Korotkoff vibration, oscillometric pulse and radial pulse were recorded, the auscultation was carried out by a doctor synchronously. SBP and DBP were calculated by identifying the feature points of Korotkoff vibration. The measurement value obtained by this approach was greater than the result based on auscultatory sphygmomanometry. The mean difference (ME) and standard deviation (SD) of SBP and DBP were 0.59±3.84 mmHg and 4.77 ±3.52 mmHg respectively. The correlation coefficients of SBP and DBP are 0.96, 0.93. The experiment indicates that this approach has a great feasibility as a noninvasive BP measurement means.