Results 21 to 30 of about 685,078 (425)

Multimodal Simulation of a Novel Device for a Safe and Effective External Ventricular Drain Placement

open access: yesFrontiers in Neuroscience, 2021
BackgroundExternal ventricular drain (EVD) placement is mandatory for several pathologies. The misplacement rate of the EVD varies widely in literature, ranging from 12.3 to 60%.
Giuseppe Emmanuele Umana   +22 more
doaj   +1 more source

The effect of repolarization duration on the indices of the pump function of the heart ventricles in animals with different types of activation of the myocardium under ectopic excitation of ventricles

open access: yesRussian Open Medical Journal, 2018
Background — The aim of the work was to study the influence of myocardial repolarization on the indices of the pump function in animals with different types of the myocardial activation (dog, amphibians) under ectopic excitation of the ventricles ...
Natalya A. Kibler   +2 more
doaj   +1 more source

Twisted atrioventricular connections in double inlet right ventricle: evaluation by magnetic resonance imaging [PDF]

open access: yes, 2008
Twisted atrioventricular connections occur almost exclusively in the hearts with biventricular atrioventricular connections. Only one example of double inlet left ventricle has been illustrated in which the axes of the two atrioventricular valves crossed
Anderson, RH, Ho, SY, Kim, TH, Yoo, SJ
core   +1 more source

Altered Oxygen Utilisation in Rat Left Ventricle and Soleus after 14 Days, but Not 2 Days, of Environmental Hypoxia. [PDF]

open access: yes, 2015
The effects of environmental hypoxia on cardiac and skeletal muscle metabolism are dependent on the duration and severity of hypoxic exposure, though factors which dictate the nature of the metabolic response to hypoxia are poorly understood.

core   +2 more sources

Markedly Improved Success Rate of Endoscopically Assisted Third Ventriculostomy Is Achieved by Routine Placement of External Lumbar Drain

open access: yesJournal of Neurological Surgery Reports, 2017
Hydrocephalus is a major cause of patient decreased quality of life and high health care financial burden in the United States and throughout the world.
Justen Watkins, Marc Cabanne, Dan Miulli
doaj   +1 more source

Evidence that conflict regarding size of haemodynamic response to interventricular delay optimization of cardiac resynchronization therapy may arise from differences in how atrioventricular delay is kept constant. [PDF]

open access: yes, 2014
Aims: Whether adjusting interventricular (VV) delay changes haemodynamic efficacy of cardiac resynchronization therapy (CRT) is controversial, with conflicting results.
Francis, DP   +9 more
core   +2 more sources

A geometric multiscale model for the numerical simulation of blood flow in the human left heart [PDF]

open access: yesDiscrete and Continuous Dynamical System - S (2022), 15(8), 2391-2427, 2021
We present a new computational model for the numerical simulation of blood flow in the human left heart. To this aim, we use the Navier-Stokes equations in an Arbitrary Lagrangian Eulerian formulation to account for the endocardium motion and we model the cardiac valves by means of the Resistive Immersed Implicit Surface method.
arxiv   +1 more source

Analysis of left ventricular behaviour in diastole by means of finite element method [PDF]

open access: yes, 1979
The human left ventricle in diastole can be modelled as a passive structure with incremental internal pressure change being considered as the load. Recent developments in engineering stress analysis provide techniques for predicting the behaviour of ...
Gibson, DG, Vinson, CA, Yettram, AL
core   +2 more sources

Ischemia Enhances the Acute Stretch-Induced Increase in Calcium Spark Rate in Ventricular Myocytes

open access: yesFrontiers in Physiology, 2020
Introduction: In ventricular myocytes, spontaneous release of calcium (Ca2+) from the sarcoplasmic reticulum via ryanodine receptors (“Ca2+ sparks”) is acutely increased by stretch, due to a stretch-induced increase of reactive oxygen species (ROS).
Breanne A. Cameron   +6 more
doaj   +1 more source

Challenges and opportunities of diagnostic markers of Alzheimer's disease based on structural magnetic resonance imaging

open access: yesBrain and Behavior, 2023
Objectives This article aimed to carry out a narrative literature review of early diagnostic markers of Alzheimer's disease (AD) based on both micro and macro levels of pathology, indicating the shortcomings of current biomarkers and proposing a novel ...
Xiang Hu, Maria Meier, Jens Pruessner
doaj   +1 more source

Home - About - Disclaimer - Privacy