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Blood Pressure - Astrophysics Data System

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Last Updated: 10 June 2022

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Use of Intrinsic Modes in biology: Examples of Indicial Response of Pulmonary Blood Pressure to ± Step Hypoxia

"Here, it is shown by the rise in the pulmonary blood pressure in response to a step decrease in oxygen levels in the gas that an animal breathes. " The pressure signal has been reduced to the sum of a few oscillatory intrinsic mode functions, which include zero "local mean" and a final nonoscillatory mode. Correspondently, the fluctuation of the signal regarding any mean trend can be represented by a series of partial sums of intrinsic mode functions. To quantify the energy or intensity of oscillations regarding each mean trend, we now have a set of individ response functions of the mean trends and another set of indicial response functions when the change of one variable in reaction to a step change of another variable.

Source link: https://ui.adsabs.harvard.edu/abs/1998PNAS...9512766H/abstract


Engineering Analysis of Biological Variables: An Example of Blood Pressure over 1 Day

"Almost all variables in biology are nonstationarily stochastic. " We use recent advances in the study of ocean waves to investigate the blood pressure waves in the lung. The handling of the local mean is of utmost importance in a long wave train, according to us. It has been shown that a signal can be described by a set of intrinsic mode functions, each of which has zero local mean at any time. The data are now represented by intrinsic mode functions, to which Hilbert transform can be used. A complex variable can be described by a signal and a times its Hilbert transform together, as shown by Titchmarsh [Titchmarsh, E. C. Introduction to Fourier Integrals] has shown that a signal and i times its Hilbert transform together, a continuous variable. This section of the blood pressure charts is shown here for the reader to see how they look. ".

Source link: https://ui.adsabs.harvard.edu/abs/1998PNAS...95.4816H/abstract


High blood pressure predictor using binary classification algorithm

"In this we introduced a machine learning algorithm for predicting high blood pressure through these following characteristics," we said specifically a deep learning model. " About 84% predicted accuracy of high blood pressure predictors. The findings of our model are to reveal blood pressure predictions. ".

Source link: https://ui.adsabs.harvard.edu/abs/2022AIPC.2418b0076R/abstract


A Review of Noninvasive Methodologies to Estimate the Blood Pressure Waveform

"Accurate estimation of blood pressure waveforms is vital for ensuring patient safety and quality care of patients in emergency care units and intraoperative hemodynamic monitoring. " Normal cuff-based BP tests can only show systolic blood pressure and diastolic blood pressure. The aim of this article is to summarize the current state of information regarding the BP waveform, three techniques used in noninvasive BP waveform estimation studies, and the advantages of using these techniques at home as well as in ICUs. Historical BP waveform measurements, validated diagnostic procedures, and more recent advancements in noninvasive BP waveform monitoring will be covered.

Source link: https://ui.adsabs.harvard.edu/abs/2022Senso..22.3953A/abstract


Wearable Blood Pressure Sensing Based on Transmission Coefficient Scattering for Microstrip Patch Antennas

"Compared to previous cuff-based options, veinless, cuffles, and continuous blood pressure monitoring devices provide a more accurate measure of blood pressure for critical diagnosis or continuous monitoring of hypertensive patients. This research also looked at a new way to get the pulse transit time as an alternative to calculating BP. Pulse transmit time is based on determining the time difference between the transmission coefficient scattering waveforms measured between the two pairs of metallic sensors, fueling the belief that brachial arterial geometries are dynamic. With the rise in brachial artery thickness-radius ratio, the absolute risk of arterial blood pressure rises. Both methods show how the radius estimates, PTT, and pulse wave velocity, as well as electromagnetic antenna propagation characteristics, can be used to determine continuous BP non-invasively. ".

Source link: https://ui.adsabs.harvard.edu/abs/2022Senso..22.3996E/abstract


Short-term effects of exposure to ambient PM 1 on blood pressure in children and adolescents aged 9 to 18 years in Shandong Province, China

"This research intends to investigate the connection between children and adolescents exposed to ambient PM 1 on BP for short stretches of time. " After accounting for other air pollutants and individual covariates, we found that per 10 bcg/m 3 rise in a cumulative exposure of PM 1 at lag 0 and lag 1 day was significantly associated with a rise in systolic BP, mean arterial pressure, and pulse pressure. In conclusion, the key window of short-term exposure to ambient PM 1, PM 2. 5, and PM 10 on BP levels for children and adolescents is lags 0 and lag 1 day, with PM 1 exhibiting the highest correlation. ".

Source link: https://ui.adsabs.harvard.edu/abs/2022AtmEn.28319180W/abstract

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions