Results 21 to 30 of about 73,555 (300)

The effects of pulsatile versus nonpulsatile flow on cerebral pulsatility index, mean flow velocity at the middle cerebral artery, regional cerebral oxygen saturation, cerebral gaseous microemboli counts, and short-term clinical outcomes in patients undergoing congenital heart surgeryCentral MessagePerspective

JTCVS Open, 2023
Objective: The objective of this retrospective review was to evaluate whether or not pulsatile flow improves cerebral hemodynamics and clinical outcomes in pediatric congenital cardiac surgery patients.
Krishna Patel, BS, Yongwook Dan, MD, Allen R. Kunselman, MA, Joseph B. Clark, MD, John L. Myers, MD, Akif Ündar, PhD   +5 more
doaj   +1 more source

Lung protection in cardio-pulmonary bypass [PDF]

, 2017
Since the invention of the heart-lung machine paediatric cardiac surgery developed rapidly. For correction of complex cardiac malformations the application of a cardio-pulmonary bypass (CPB) has become indispensable but possible negative effects of this ...
Bahramsoltani, M., Dahnert, I., Dhein, S., Greimann, W., Salameh, A., Vollroth, M.   +5 more
core   +1 more source

Non-pulsatile blood flow is associated with enhanced cerebrovascular carbon dioxide reactivity and an attenuated relationship between cerebral blood flow and regional brain oxygenation

Critical Care, 2019
Background Systemic blood flow in patients on extracorporeal assist devices is frequently not or only minimally pulsatile. Loss of pulsatile brain perfusion, however, has been implicated in neurological complications.
Cecilia Maria Veraar, Harald Rinösl, Karina Kühn, Keso Skhirtladze-Dworschak, Alessia Felli, Mohamed Mouhieddine, Johannes Menger, Ekaterina Pataraia, Hendrik Jan Ankersmit, Martin Dworschak   +9 more
doaj   +1 more source

Beyond the virtual intracranial stenting challenge 2007: non-Newtonian and flow pulsatility effects [PDF]

, 2010
The attached article is a post print version of the final published version which may be accessed at the link below. Crown Copyright (c) 2010 Published by Elsevier Ltd.
Atherton, MA, Barozzi, G, Cavazzuti, M, Collins, MW   +3 more
core   +1 more source

Easy Pulsatile Phantom for Teaching and Validation of Flow Measurements in Ultrasound

Ultrasound International Open, 2016
Purpose: To build a simple model to teach and validate non-pulsatile and pulsatile flow quantification in ultrasound. Materials and Methods: The setting consists of the following connected components: (1) medical syringe pump producing an adjustable ...
M. B. Rominger, E.-M. Müller-Stuler, M. Pinto, A. S. Becker, K. Martini, T. Frauenfelder, V. Klingmüller   +6 more
doaj   +1 more source

Pulsatile spiral blood flow through arterial stenosis [PDF]

, 2014
Pulsatile spiral blood flow in a modelled three-dimensional arterial stenosis, with a 75% cross-sectional area reduction, is investigated by using numerical fluid dynamics.
Hyde, M.A., Linge, F., Paul, M.C.
core   +1 more source

Geometrically Reduced Modelling of Pulsatile Flow in Perivascular Networks

Frontiers in Physics, 2022
Flow of cerebrospinal fluid in perivascular spaces is a key mechanism underlying brain transport and clearance. In this paper, we present a mathematical and numerical formalism for reduced models of pulsatile viscous fluid flow in networks of generalized
Cécile Daversin-Catty , Ingeborg G. Gjerde , Marie E. Rognes , Marie E. Rognes    +3 more
doaj   +1 more source

Precise position control of a helical magnetic robot in pulsatile flow using the rotating frequency of the external magnetic field

AIP Advances, 2017
We propose a position control method for a helical magnetic robot (HMR) that uses the rotating frequency of the external rotating magnetic field (ERMF) to minimize the position fluctuation of the HMR caused by pulsatile flow in human blood vessels.
Jongyul Kim, Jaekwang Nam, Wonseo Lee, Bongjun Jang, Gunhee Jang   +4 more
doaj   +1 more source

Large-eddy simulation of physiological pulsatile flow through a channel with double constriction [PDF]

, 2016
Pulsatile flow in a 3D model of arterial double stenoses is investigated using a large eddy simulation (LES) technique. The computational domain that has been chosen is a simple channel with a biological-type stenosis formed eccentrically on the top wall.
Molla, Md. Mamun, Paul, Manosh C.
core   +2 more sources

Simulation of Pulsatile Flow in Cerebral Aneurysms: From Medical Images to Flow and Forces [PDF]

, 2012
In this chapter we present a numerical model for the simulation of blood flow inside cerebral aneurysms. We illustrate the process of predicting flow and forces that arise in vessels and aneurysms starting from patient-specific data obtained using ...
Geurts, Bernard J., Mikhal, Julia, Slump, Cornelis H.   +2 more
core   +4 more sources