Pulse transit time: Relationship to blood pressure

Obrist, Paul A.; Light, Kathleen C.; McCubbin, James A.; Hutcheson, J. Stanford; Hoffer, J. Lee

doi:10.3758/bf03205360

Cited by 36 publications

(21 citation statements)

References 5 publications

(7 reference statements)

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“…In literature, it is prevalent to simplify equation (5) further by assuming C(P ) to be constant [18], and approximating the subject-specific parameters using calibration procedures. However, a number of researchers believe that this simplification limits the accuracy of such methodologies, and enforces an elaborated calibration procedure [12].…”

Section: B Wave Propagation In Arteriesmentioning

confidence: 99%

Cuffless Blood Pressure Estimation Algorithms for Continuous Health-Care Monitoring

Kachuee¹,

Kiani²,

Mohammadzade³

et al. 2017

IEEE Trans. Biomed. Eng.

439

295

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Section: B Wave Propagation In Arteriesmentioning

confidence: 99%

Cuffless Blood Pressure Estimation Algorithms for Continuous Health-Care Monitoring

Kachuee¹,

Kiani²,

Mohammadzade³

et al. 2017

IEEE Trans. Biomed. Eng.

439

295

View full text Add to dashboard Cite

show abstract

“…The velocity of displaced fluid in a pipe is a function of its tension and elasticity. The relation between the Pulse Wave Velocity (PWV), vessel parameters and blood properties can be represented as [6]:…”

Section: Introductionmentioning

confidence: 99%

Cuff-less high-accuracy calibration-free blood pressure estimation using pulse transit time

Kachuee

Kiani

Mohammadzade

et al. 2015

2015 IEEE International Symposium on Circuits and Systems (ISCAS)

217

148

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Recently a few methods have been proposed in the literature for non-invasive cuff-less estimation of systolic and diastolic blood pressures. One of the most prominent methods is to use the Pulse Transit Time (PTT). Although it is proven that PTT has a strong correlation with the systolic and diastolic blood pressures, this relation is highly dependent to each individuals physiological properties. Therefore, it requires per person calibration for accurate and reliable blood pressure estimation from PTT, which is a big drawback. To alleviate this issue, in this paper, a novel method is proposed for accurate and reliable estimation of blood pressure that is calibration-free. This goal is accomplished by extraction of several physiological parameters from Photoplethysmography (PPG) signal as well as utilizing signal processing and machine learning algorithms. The results show that the accuracy of the proposed method achieves grade B for the estimation of the diastolic blood pressure and grade C for the estimation of the mean arterial pressure under the standard British Hypertension Society (BHS) protocol.978-1-4799-8391-9/15/$31.00 ©2015 IEEE

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“…However, for ease of measurement, the R-wave of the ECG has been used as the starting point as it corresponds approximately to the opening of the aortic valve. Advances in technology have allowed accurate estimation of the arrival of the pulse wave at a peripheral site such as the fingertip or toe using PPG [7-9]. …”

Section: Methodsmentioning

confidence: 99%

An Assessment of Pulse Transit Time For Detecting Heavy Blood Loss During Surgical Operation

Wang¹,

Lu²,

Lin³

et al. 2012

TOBEJ

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The main contribution of this paper is the use of non-invasive measurements such as electrocardiogram (ECG) and photoplethysmographic (PPG) pulse oximetry waveforms to develop a new physiological signal analysis technique for detecting blood loss during surgical operation. Urological surgery cases were considered as the control group due to its generality, and cardiac surgery as experimental group since it involves blood loss and water supply. Results show that the control group has the tendency of a reduction of the pulse transient time (PTT), and this indicates an increment in the blood flow velocity changes from slow to fast. While for the experimental group, the PTT indicates high values during blood loss, and low values during water supply. Statistical analysis shows considerable differences (i.e., P <0.05) between both groups leading to the conclusion that PTT could be a good indicator for monitoring patients' blood loss during a surgical operation.

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Pulse transit time: Relationship to blood pressure

Cited by 36 publications

References 5 publications

Cuffless Blood Pressure Estimation Algorithms for Continuous Health-Care Monitoring

Cuffless Blood Pressure Estimation Algorithms for Continuous Health-Care Monitoring

Cuff-less high-accuracy calibration-free blood pressure estimation using pulse transit time

An Assessment of Pulse Transit Time For Detecting Heavy Blood Loss During Surgical Operation

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