Results 81 to 90 of about 3,756 (169)

Conduit Artery Photoplethysmography and its Applications in the Assessment of Hemodynamic Condition [PDF]

open access: yes, 2015
Elektroniskā versija nesatur pielikumusPromocijas darbā ir izstrādāta maģistrālo artēriju fotopletizmogrāfijas (APPG) metode hemodinamisko parametru novērtējumam.
Grabovskis, Andris
core  

Blood Pressure Estimation using Photoplethysmography only: Comparison between Different Machine Learning Approaches [PDF]

open access: yes, 2018
Introduction: Blood pressure (BP) has been a potential risk factor for cardiovascular diseases. BP measurement is one of the useful parameters for early diagnosis, prevention, and treatment of cardiovascular diseases.
Chen, Fei   +3 more
core   +1 more source

Analysis of the thermal conditions of pulse impact avalanche transit-time diodes [PDF]

open access: yes, 2009
The nonstationary problem of the thermal process for the pulse mode of impact avalanche transit-time diodes is solved. The one-dimensional thermal model of such diodes, which takes into account the heterogeneity of the thermal power distribution and the ...
Arkhipov, A.V., Sorokin, M.S.
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A Chair-Based Unconstrained/Nonintrusive Cuffless Blood Pressure Monitoring System Using a Two-Channel Ballistocardiogram

open access: yesSensors, 2019
Hypertension is a well-known chronic disease that causes complications such as cardiovascular diseases or stroke, and thus needs to be continuously managed by using a simple system for measuring blood pressure.
Kwang Jin Lee   +4 more
doaj   +1 more source

Effects of acute sympathetic activation on eye temperature using infrared thermography [PDF]

open access: yes, 2017
Using physiological markers to measure sympathetic activation can be used to infer pain and stress in humans. To date, the only methods in humans that reproducibly do this are invasive and poses an undesired risk to participants. Previous work on cattle (

core  

Midsagittal Jaw Movement Analysis for the Scoring of Sleep Apneas and Hypopneas [PDF]

open access: yes, 2008
Given the importance of the detection and classification of sleep apneas and hypopneas (SAHs) in the diagnosis and the characterization of the SAH syndrome, there is a need for a reliable noninvasive technique measuring respiratory effort.
Destiné, Jacques   +2 more
core   +1 more source

P129 SHORT-TERM REPEATABILITY OF NON-INVASIVE AORTIC PULSE WAVE VELOCITY MEASURES

open access: yesArtery Research, 2017
Objective: To compare the short-term repeatability of aortic pulse wave velocity (PWV) measures obtained with non-invasive devices. Methods: In 102 patients planned to undertake a cardiac catheterization (65±13 years, 70.6% males) duplicate non-invasive
Andrea Grillo   +10 more
doaj   +1 more source

動脈硬化スクリーニング指標計測手法の開発と健康管理システムへの展開 [PDF]

open access: yes, 2014
この博士論文は、全文公表に適さないやむを得ない事由があり要約のみを公表していましたが、解消したため、令和2(2020)年4月20日に全文を公表しました。筑波大学 (University of Tsukuba ...
白石 直人
core  

Assessing cardiac preload by the Initial Systolic Time Interval obtained from impedance cardiography

open access: yesJournal of Electrical Bioimpedance, 2010
The Initial Systolic Time Interval (ISTI), obtained from the electrocardiogram (ECG) and impedance cardiogram (ICG), is considered to be a measure for the time delay between the electrical and mechanical activity of the heart and reflects an early active
Meijer Jan H.   +4 more
doaj   +1 more source

[Degree of correlation between pulse transit time (PTT) and arterial blood pressure: a question to its utility in blood pressure biofeedback (author's transl)].

open access: yesShinrigaku kenkyu : The Japanese journal of psychology, 1980
PTT and systolic blood pressure were measured 20 times at rest and 10 times with Valsalva's Maneuvre from each of five subjects. Linear correlation coefficients (LCs) were calculated from the data obtained only at rest and from both measuring conditions combined. The results showed that LCs from the combined data were highly negative (--0.428-- --0.854)
openaire   +1 more source

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