Results 21 to 30 of about 737,277 (397)

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

Russian 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, Vladimir P. Nyzhny, Dmitry N. Shmakov   +2 more
doaj   +1 more source

Elevated Embryonic Temperature Has Persistent Adverse Effects on Zebrafish Swimming Capacity

Fishes, 2022
In recent years, global warming of anthropogenic origin and its impacts on biodiversity have increasingly gained public awareness. Here, we demonstrate that embryonic temperature can have persistent and crucial effects on zebrafish swimming capacity and ...
Anastasia Dimitriadi, George Koumoundouros   +1 more
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]

, 2014
Aims: Whether adjusting interventricular (VV) delay changes haemodynamic efficacy of cardiac resynchronization therapy (CRT) is controversial, with conflicting results.
Francis, DP, Hughes, AD, Jones, S, Kanagaratnam, P, Kyriacou, A, Manisty, CH, Mayet, J, Peters, NS, Sohaib, SM, Whinnett, ZI   +9 more
core   +2 more sources

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

Brain 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

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

, 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

A parallel interaction potential approach coupled with the immersed boundary method for fully resolved simulations of deformable interfaces and membranes [PDF]

, 2016
In this paper we show and discuss the use of a versatile interaction potential approach coupled with an immersed boundary method to simulate a variety of flows involving deformable bodies.
de Tullio, Marco D, Lohse, Detlef, Meschini, Valentina, Ostilla-Monico, Rodolfo, Querzoli, Giorgio, Spandan, Vamsi, Verzicco, Roberto   +6 more
core   +3 more sources

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

Frontiers 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, Gianluca Scalia, Kaan Yagmurlu, Rosalia Mineo, Rosalia Mineo, Simone Di Bella, Simone Di Bella, Matteo Giunta, Angelo Spitaleri, Rosario Maugeri, Francesca Graziano, Francesca Graziano, Marco Fricia, Giovanni Federico Nicoletti, Santino Ottavio Tomasi, Giuseppe Raudino, Bipin Chaurasia, Gianluca Bellocchi, Maurizio Salvati, Domenico Gerardo Iacopino, Salvatore Cicero, Massimiliano Visocchi, Lidia Strigari   +22 more
doaj   +1 more source

A tissue-engineered scale model of the heart ventricle

Nature Biomedical Engineering, 2018
Laboratory studies of the heart use cell and tissue cultures to dissect heart function yet rely on animal models to measure pressure and volume dynamics.
L. Macqueen, L. Macqueen, S. Sheehy, S. Sheehy, Christophe O. Chantre, Christophe O. Chantre, J. Zimmerman, J. Zimmerman, F. Pasqualini, F. Pasqualini, Xujie Liu, Josue A. Goss, Josue A. Goss, Patrick H. Campbell, Patrick H. Campbell, Grant M. Gonzalez, Grant M. Gonzalez, Sung-Jin Park, Sung-Jin Park, A. Capulli, A. Capulli, John P Ferrier, John P Ferrier, T. F. Kosar, L. Mahadevan, William T. Pu, W. Pu, K. Parker, K. Parker   +28 more
semanticscholar   +1 more source

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

Journal 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

Experimental study on coronary perfusion with selective brain cooling for direct aortic surgery [PDF]

, 1959
1. Retrograde coronary perfusion in combination with selective brain cooling by irrigation was investigated in dogs, in comparison with direct coronary artery perfusion. 2.
Hayashi, Naomi
core   +1 more source