Non-Invasive Blood Pressure Monitor: Beat to Beat

Non-Invasive Blood Pressure Monitor has been developed at Electronics Division, BARC. It comprises of an Oscillometric, Impedance Plethysmographic (IPG), Photo Plethysmographic (PPG) and Electrocardiographic (ECG) modules. Oscillometric module facilitates spot or periodic measurement of blood pressure whereas other modules yield various hemodynamic parameters to obtain beat to beat blood pressure. Linear multivariate equations have been used for this purpose, which have been derived from IPG, PPG and ECG data in 137 subjects aging 10-80 years. Revalidation of these equations has been done in another group of 136 subjects and has yielded a correlation of 82.6% for Systolic Blood Pressure (SBP) and 73.1% for Mean Arterial Pressure (MAP).