A strategy for determination of systolic, mean and diastolic blood pressures from oscillometric pulse profiles

The main difficulty to determine the systolic, mean and diastolic blood pressure using the oscillometric method is related to the strategy involved in the computational algorithm to extract these parameters from the oscillometric pulse profiles. A new strategy determined correlating several quantities, such as reference blood pressure measurements, actual cuff pressure, pulse amplitude, characteristic ratios, age, weight, height, arm circumference size, systolic, mean and diastolic blood pressures, is presented in this paper. The results were obtained from an extensive statistical analysis performed with MATLAB to determine the cross-relations and distributions between characteristic ratios and the several parameters studied. The strategy was used in an oscillometric blood pressure measurement system with very good results, according to a comparative study using a simulator, providing reduction in measurement time and larger rejection of motion artifact and arrhythmia.