A literature survey on ambulatory blood pressure monitoring using pulse transit time identified gaps in calibration, signal processing, and system integration.
This review highlights current challenges and future directions for improving the accuracy and integration of ambulatory blood pressure monitors based on pulse transit time.
Blood pressure monitoring based on pulse transit or arrival time has been the focus of much research in order to design ambulatory blood pressure monitors. The accuracy of these monitors is limited by several challenges, such as acquisition and processing of physiological signals as well as changes in vascular tone and the pre-ejection period. In this work, a literature survey covering recent developments is presented in order to identify gaps in the literature. The findings of the literature are classified according to three aspects. These are the calibration of pulse transit/arrival times to blood pressure, acquisition and processing of physiological signals and finally, the design of fully integrated blood pressure measurement systems. Alternative technologies as well as locations for the measurement of the pulse wave signal should be investigated in order to improve the accuracy during calibration. Furthermore, the integration and validation of monitoring systems needs to be improved in current ambulatory blood pressure monitors.
Buxi et al. (Thu,) conducted a review in Blood pressure monitoring. Ambulatory blood pressure monitoring using pulse transit time was evaluated. A literature survey on ambulatory blood pressure monitoring using pulse transit time identified gaps in calibration, signal processing, and system integration.