Key result
Wearable PTT/PAT-based BP monitors show potential but struggle with motion noise and dynamic response.
Why the study?
Wearable continuous blood pressure monitoring devices face challenges such as motion noise and slow dynamic response speeds, making pulse wave transit time methods an area of active interest.
Wearable continuous BP monitoring devices based on PTT and PAT offer potential for non-invasive, daily cardiovascular monitoring, though motion artifacts remain a significant challenge.
Caution against clinical adoption of current PTT-based wearables; leaves open optimization of sensor designs for ambulatory accuracy.
Continuous blood pressure (BP) monitoring is of great significance for the real-time monitoring and early prevention of cardiovascular diseases. Recently, wearable BP monitoring devices have made great progress in the development of daily BP monitoring because they adapt to long-term and high-comfort wear requirements. However, the research and development of wearable continuous BP monitoring devices still face great challenges such as obvious motion noise and slow dynamic response speeds. The pulse wave transit time method which is combined with photoplethysmography (PPG) waves and electrocardiogram (ECG) waves for continuous BP monitoring has received wide attention due to its advantages in terms of excellent dynamic response characteristics and high accuracy. Here, we review the recent state-of-art wearable continuous BP monitoring devices and related technology based on the pulse wave transit time; their measuring principles, design methods, preparation processes, and properties are analyzed in detail. In addition, the potential development directions and challenges of wearable continuous BP monitoring devices based on the pulse wave transit time method are discussed.
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Zhou et al. (2023) conducted a review in Hypertension. Wearable continuous blood pressure monitoring devices based on pulse wave transit time and pulse arrival time was evaluated. Wearable continuous blood pressure monitoring devices based on pulse wave transit time and pulse arrival time offer potential for daily monitoring but face challenges with motion noise and dynamic response.
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