Results 41 to 50 of about 1,681,771 (209)

Development of tubular cardiovascular phantom system for pulse transit time simulation [PDF]

open access: yes, 2019
This paper presents on the development of a tubular cardiovascular phantom system to simulate pulse transit time (PTT). The PTT defined as the delay time between two pulses in one cardiac cycle has been shown to be promising method for cuffless ...
Correia, Ricardo   +4 more
core   +1 more source

Threshold Values of Sleep Spindles Features in Healthy Adults Using Scalp‐EEG and Associations With Sleep Parameters

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Sleep spindles are an electrophysiological fingerprint of the sleeping human brain. They can be described in terms of duration, frequency, amplitude, and density, and vary widely according to age and sex. Spindles play a role in sleep and wake functions and are altered in several neurological and psychiatric disorders.
Julien Coelho   +8 more
wiley   +1 more source

Cardiovascular System Studies [PDF]

open access: yes, 1964
Contains reports on two research projects.National Institutes of Health (Grant 5T1 HE 5550 ...
Barnett, G. O.   +3 more
core  

Serotonergic and Dopaminergic Function in Neuropsychiatrically Asymptomatic People With HIV on Antiretroviral Therapy

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective People with HIV (PWH) on antiretroviral therapy (ART) still experience neurocognitive dysfunction and accelerated brain volume loss. To assess whether the serotonergic and dopaminergic systems are affected, we used [11C]DASB positron emission tomography (PET) to assess presynaptic serotonergic function and [18F]FDOPA PET to measure ...
Chuen‐Yen Lau   +12 more
wiley   +1 more source

Mathematical modelling of the cardiovascular system

open access: yes, 2002
In this paper we will address the problem of developing mathematical models for the numerical simulation of the human circulatory system.
Quarteroni, Alfio
core  

Electronic circuit detects left ventricular ejection events in cardiovascular system [PDF]

open access: yes, 1972
Electronic circuit processes arterial blood pressure waveform to produce discrete signals that coincide with beginning and end of left ventricular ejection. Output signals provide timing signals for computers that monitor cardiovascular systems.
Gebben, V. D., Webb, J. A., Jr.
core   +1 more source

Considering the role of Murine double minute 2 in the cardiovascular system [PDF]

open access: yes, 2019
The E3 ubiquitin ligase Murine double minute 2 (MDM2) is the main negative regulator of the tumor protein p53 (TP53). Extensive studies over more than two decades have confirmed MDM2 oncogenic role through mechanisms both TP53-dependent and TP53 ...
Lam, Brian, Roudier, Emile
core   +1 more source

Phenotyping Healthcare Use 2–3 Decades Before the First Multiple Sclerosis Demyelinating Event

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Phenotype hospital, physician, and emergency department (ED) visits by diagnoses and specialty up to 29 years pre‐multiple sclerosis (MS) onset versus a matched population without MS. Methods We identified people with MS (PwMS) using population‐based administrative data from Ontario, Canada (1991–2020).
Helen Tremlett   +8 more
wiley   +1 more source

Miniature battery-operated electromagnetic system for blood flow measurements [PDF]

open access: yes, 1971
System consisting of solid state electronics package and a pair of standard flow-transducer cuffs is useful in cardiovascular studies.
Fryer, T. B.
core   +1 more source

Factors for Rituximab Refractoriness in AQP4‐IgG+ NMOSD: A Cohort Study

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Neuromyelitis optica spectrum disorder (NMOSD) is a severe autoimmune condition of the central nervous system (CNS), often associated with aquaporin‐4 antibodies (AQP4‐IgG). Rituximab, a CD20+ B‐cell depleting monoclonal antibody, is widely used as first‐line therapy.
Mariano Marrodan   +8 more
wiley   +1 more source

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