Results 71 to 80 of about 364,910 (147)

Voltage programmable diffraction grating device [PDF]

, 2012
In this research, voltage programmable liquid device has been introduced, studied and a relationship was verified for the electromagnetic relationship between the parameters of the device and the switching application was characterised.
Al-Shabib, W
core  

A novel ventriculoperitoneal shunt flow sensor based on electrically induced spatial variation in cerebrospinal fluid charge density

Frontiers in Bioengineering and Biotechnology
Introduction: Ventriculoperitoneal (VP) shunts divert cerebrospinal fluid (CSF) out of cerebral ventricles in patients with hydrocephalus or elevated intracranial pressure (ICP). Despite high failure rates, there exist limited clinically viable solutions
David A. Zarrin, Matiar Jafari, Won Kim, Geoffrey P. Colby   +3 more
doaj   +1 more source

An adjustable gravitational valve for initial VP-shunt treatment in hydrocephalic preterm neonates and infants below 1 year of age

, 2021
Objective!#!Shunt treatment for hydrocephalus in children should aim for sustainable flexibility in regard to optional, perspective pressure level adjustment during advancing physical and mental development. Gravitation-assisted shunt valves are designed
von Philipp, Gottberg, Bock, Hans Christoph, Ludwig, Hans Christoph   +2 more
core   +1 more source

Determining the best cerebrospinal fluid shunt valve design: the pediatric valve design trial [PDF]

, 1996
journal articleMyriad cerebrospinal fluid shunt valve designs are available (17, IS). None has ever been shown to be superior to another, although claims by neurosurgeons and shunt manufacturers of the merits of particular designs are numerous.
Kestle, John R. W., Drake, James M.
core  

Parent/guardian knowledge regarding implanted shunt type, setting, and symptoms of malfunction/infection

, 2018
OBJECTIVEPatients with shunts often interact with providers distant from their primary hospital, making it important that the parent(s)/guardian(s) is well versed in the type of shunt implanted and symptoms of malfunction/infection.
Jodi L. Smith, Daniel H. Fulkerson, Andrew Jea, Laurie L. Ackerman   +3 more
core   +1 more source

Paradoxical response of intracranial pressure to shunt valve setting adjustments [PDF]

, 2020
Background: The hydrodynamics of cerebrospinal fluid shunts have been described in vitro; however, knowledge on the response of intracranial pressure (ICP) to valve settings adjustments in vivo is limited.
Bremner, F, D'Antona, L, Thompson, SD, Craven, CL, Merchan, MAJ, Matharu, M, Toma, A, Thorne, L, Watkins, L   +8 more
core   +1 more source

A Valve Design Methodology For Improved Reciprocating Compressor Performance [PDF]

, 2012
The current work directly relates valve dynamics to the compressor energy efficiency. Majority of the previous studies have focused on reducing pressure losses due to valve geometry, towards improved compressor performance.
Angadi, Shruti, Bahadur, Vaibhav, Dhar, Sandeep, Dey, Subhrajit, Bhakta, Aditya   +4 more
core   +1 more source

Clinical evaluation of an adjustable cerebrospinal fluid shunt valve

, 2003
Introduction: Shunting systems are implanted for draining cerebrospinal fluid to treat hydrocephalus, intracranial cysts, and idiopathic intracranial hypertension. Most shunt systems include a valve which regulates drainage. A differential pressure valve
Zemack, Göran
core  

Ventriculoperitoneal Shunt Migration [PDF]

, 2017
History of present illness: A 40-year-old female presented to our ED with left upper abdominal pain and flank pain. The pain had begun suddenly 2 hours prior when she was reaching into a freezer to get a bag of frozen vegetables.
Puller, Justin P, Miller, Jonathan T, Justin P Puller, Jonathan T Miller   +3 more
core   +1 more source

Consensus-based recommendations for diagnosis and surgical management of cranioplasty and post-traumatic hydrocephalus from a European panel

Brain and Spine
Introduction: Planning cranioplasty (CPL) in patients with suspected or proven post-traumatic hydrocephalus (PTH) poses a significant management challenge due to a lack of clear guidance. Research question: This project aims to create a European document
Corrado Iaccarino, Salvatore Chibbaro, Thomas Sauvigny, Ivan Timofeev, Ismail Zaed, Silvio Franchetti, Harry Mee, Antonio Belli, Andras Buki, Pasquale De Bonis, Andreas K. Demetriades, Bart Depreitere, Kostantinos Fountas, Mario Ganau, Antonino Germanò, Peter Hutchinson, Angelos Kolias, Dirk Lindner, Laura Lippa, Niklas Marklund, Catherine McMahon, Dorothee Mielke, Davide Nasi, Wilco Peul, Maria Antonia Poca, Angelo Pompucci, Jussi P. Posti, Nicoleta-Larisa Serban, Bruno Splavski, Ioan Stefan Florian, Anastasia Tasiou, Gianluigi Zona, Franco Servadei   +32 more
doaj   +1 more source