Key result
The proposed cuff-less ultrasonic blood pressure monitoring algorithm measured systolic blood pressure with a mean error of -0.233 mmHg and standard deviation of 4.538 mmHg, meeting AAMI and BHS Grade A standards.
Why the study?
Does a novel ultrasonic algorithm accurately estimate blood pressure without a cuff in human subjects?
Observational (n=211)
Yes
Does a novel ultrasonic algorithm accurately estimate blood pressure without a cuff in human subjects?
Mean Difference: -0.233
A novel cuff-less, non-invasive ultrasonic algorithm accurately estimates blood pressure, meeting AAMI and BHS standards.
May support cuffless BP monitoring development; leaves open large-scale clinical validation before practice change.
In in this study ultrasonic method was applied for measuring blood pressure (BP). First, a novel method is proposed to measure mean arterial pressure (MAP), diastolic blood pressure (DBP) and systolic blood pressure (SBP) using ultrasonic sensors. The proposed algorithm is implemented by measuring the diameter of the artery and the speed of blood flow based on Doppler physical phenomena so the blood pressure can be calculated. The results of the proposed algorithm for MAP, SBP, and DBP hypertension analyses were evaluated with the results of Association for the Advancement of Medical Instrumentation (AAMI standard) for all three cases and their mean error rate for the worst case was -0.233mmHg and the standard deviation for 422 samples taken from individuals in the worst case was 4.53 mmHg that meets the standard requirements. Also, according to the British Hypertension Society (BHS) standard, a proposed algorithm for estimating blood pressure for all three cases of MAP, DBP, and SBP has Grade A, indicating high accuracy in measuring and using the most effective variables in the diagnosis of hypertension in the human body. The proposed algorithm in BP estimation is non-invasive, cuff-less, no calibration, and only based on using the ultrasonic sensor.
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Abolhasani et al. (2020) conducted an observational in Blood pressure measurement (n=211). Ultrasonic cuff-less blood pressure monitoring algorithm vs. Mercury Sphygmomanometer and Finapres NOVA was evaluated on Mean error and standard deviation of blood pressure measurement compared to standard devices (Mean error -0.233 mmHg). The proposed cuff-less ultrasonic blood pressure monitoring algorithm measured systolic blood pressure with a mean error of -0.233 mmHg and standard deviation of 4.538 mmHg, meeting AAMI and BHS Grade A standards.
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