Patient-Specific Oscillometric Blood Pressure Measurement: Validation for Accuracy and Repeatability
Oscillometric devices are widely used for automatic cuff blood pressure (BP) measurement. These devices estimate BP from the oscillometric cuff pressure waveform using population average methods. Hence, the devices may only be accurate over a limited BP range. The objective was to evaluate a new patient-specific method, which estimates BP by fitting a physiologic model to the same waveform.
Patient-Specific Oscillometric Blood Pressure Measurement
A patient-specific method was developed to estimate BP from the same waveform by leveraging a physiologic model and parameter estimation. This method was tested against invasive reference BP measurements from patients with varying BP levels. The method yielded BP errors that were nearly 40% lower than existing methods.