Results 21 to 30 of about 273,643 (290)

Efficiently Generating Mixing by Combining Differing Small Amplitude Helical Geometries

open access: yesFluids, 2019
Helical geometries have been used in recent years to form cardiovascular prostheses such as stents and shunts. The helical geometry has been found to induce swirling flow, promoting in-plane mixing.
Andrew N. Cookson   +2 more
doaj   +1 more source

Intrapulmonary distribution of blood flow during exercise in pulmonary hypertension assessed by a new combination technique

open access: yesFrontiers in Cardiovascular Medicine, 2023
BackgroundHyperventilation and inadequate cardiac output (CO) increase are the main causes of exercise limitation in pulmonary hypertension (PH). Intrapulmonary blood flow partitioning between ventilated and unventilated lung zones is unknown.
Stefania Farina   +6 more
doaj   +1 more source

Small Size Dual-band Bandpass Filters with Multiconductor Transmission Lines and Shunt Open Stubs [PDF]

open access: yes, 2018
A dual-band bandpass filter consisting of multiconductor transmission lines (MTL) and shunt stubs has been designed. The used topology, based on the interconnection of two identical MTL and a shunt open stub, has a frequency response that can be modelled
Márquez Segura, Enrique   +2 more
core   +1 more source

Management of tetralogy of Fallot with Blalock–Taussig shunt alone in a low-resource setting

open access: yesSahel Medical Journal, 2019
The outcomes of management of Tetralogy of Fallot (TOF) in children with only BT shunts have not been widely reported. Therefore, we present a 29-year-old man with complaints of progressive easy fatigability and effort intolerance.
Ehi Judith Ogbemudia, Stanley Okugbo
doaj   +1 more source

Shunt quantification in congenital heart disease based on two-dimensional speckle tracking [PDF]

open access: yes, 2012
In this work we investigated how high frame rate speckle tracking based on plane wave imaging could be used to improve the quantification of peak velocities in shunt flows due to septal defects.
Fadnes, Solveig   +4 more
core   +2 more sources

Absent left main coronary artery in a case of pulmonary atresia-intact ventricular septum and right ventricle-dependent coronary circulation

open access: yesAnnals of Pediatric Cardiology, 2022
Right ventricle-dependent coronary circulation coexisting with left main coronary atresia in the setting of pulmonary atresia-intact ventricular septum is rare.
Anna Krokovay   +4 more
doaj   +1 more source

Effect of Fixed Node Maneuver on Migration of Lumboperitoneal Shunt: A pilot study [PDF]

open access: yesInternational Journal of Medical Arts, 2020
Background: Shunt migration after Lumboperitoneal [LP] shunt procedures can occur upward into the spinal subarachnoid space and downward into the abdominal cavity.
Mohamed Mansour   +2 more
doaj   +1 more source

Disconnection of Ventriculoperitoneal Shunt after Mild Injury over the Catheter's Pathway: Two Cases

open access: yesIndian Journal of Neurosurgery, 2018
Hydrocephalus is present in 1 of every 1,000 newborns treated with ventriculoperitoneal shunts (VPSs) in the majority of cases. This procedure carries a high risk of complications.
Claudia Marcela Restrepo Lugo   +5 more
doaj   +1 more source

A Distinct Scenario of a Patient with Parkinson’s Disease and Comorbid Normal Pressure Hydrocephalus

open access: yesIndian Journal of Neurosurgery, 2020
In literature, patients with coexistence of normal pressure hydrocephalus (NPH) and Parkinsons’s disease (PD) have been rarely reported. Herein, I illustrate the evaluation processes of a remarkable patient with PD and comorbid NPH from my experience ...
Halil Onder
doaj   +1 more source

Shunt Infection

open access: yesArchives of Pediatric Neurosurgery, 2021
The improvement in the management of hydrocephalus comes from the following: early diagnosis, radiological investigation, better knowledge of mechanisms, quality of material, surgical technique of implantation, less shunt complications (e.g.infections ...
Maurice Choux
doaj   +1 more source

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