A novel continuous blood pressure estimation approach combining data mining with a mechanism-driven model outperformed state-of-the-art PTT-based models by reducing standard deviation by ~2 mmHg.
Does a novel continuous BP estimation approach combining data mining with a mechanism-driven model improve BP measurement accuracy compared to state-of-the-art PTT-based models in human subjects?
A novel continuous BP estimation approach using data mining and PTT significantly improves cuffless BP measurement accuracy and robustness over time.
Continuous blood pressure (BP) estimation using pulse transit time (PTT) is a promising method for unobtrusive BP measurement. However, the accuracy of this approach must be improved for it to be viable for a wide range of applications. This study proposes a novel continuous BP estimation approach that combines data mining techniques with a traditional mechanism-driven model. First, 14 features derived from simultaneous electrocardiogram and photoplethysmogram signals were extracted for beat-to-beat BP estimation. A genetic algorithm-based feature selection method was then used to select BP indicators for each subject. Multivariate linear regression and support vector regression were employed to develop the BP model. The accuracy and robustness of the proposed approach were validated for static, dynamic, and follow-up performance. Experimental results based on 73 subjects showed that the proposed approach exhibited excellent accuracy in static BP estimation, with a correlation coefficient and mean error of 0.852 and -0.001 ± 3.102 mmHg for systolic BP, and 0.790 and -0.004 ± 2.199 mmHg for diastolic BP. Similar performance was observed for dynamic BP estimation. The robustness results indicated that the estimation accuracy was lower by a certain degree one day after model construction but was relatively stable from one day to six months after construction. The proposed approach is superior to the state-of-the-art PTT-based model for an approximately 2-mmHg reduction in the standard derivation at different time intervals, thus providing potentially novel insights for cuffless BP estimation.
Miao et al. (Fri,) conducted a other in Blood pressure estimation (n=73). Continuous BP estimation approach combining data mining with a traditional mechanism-driven model vs. State-of-the-art PTT-based model was evaluated on Accuracy in static BP estimation (correlation coefficient and mean error). A novel continuous blood pressure estimation approach combining data mining with a mechanism-driven model outperformed state-of-the-art PTT-based models by reducing standard deviation by ~2 mmHg.
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