Results 341 to 350 of about 5,542,649 (397)
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Mechanical abdomino/heart/lung interaction
Journal of Sleep Research, 1995SUMMARY It is generally assumed that inspiration will enhance both superior and inferior vena cava (SVC and IVC) blood flows due to the decrease in right atrial pressure produced by the fall in intrathoracic pressure. However, inspiration can also increase abdominal pressure due to the descent of the diaphragm. Using a model of abdominal vascular zone
, Robotham, , Takata
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Mechanisms of Neonatal Heart Regeneration
Current Cardiology Reports, 2020This review provides an overview of the molecular mechanisms underpinning the cardiac regenerative capacity during the neonatal period and the potential targets for developing novel therapies to restore myocardial loss.We present recent advances in the understanding of the molecular mechanisms of neonatal cardiac regeneration and the implications for ...
Alisson C, Cardoso +2 more
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Mechanical Heart Valves in Septuagenarians
Journal of Cardiac Surgery, 2008To report on the use of a third-generation bileaflet mechanical valve in septuagenarians, selected to receive a mechanical valve, as compared to (a) a younger cohort undergoing same valve implant (study 1) and to (b) a matched group of septuagenarians undergoing biological implant (study 2).The study was carried out in a tertiary regional hospital in ...
Ascione, R +5 more
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Evolution of mechanical heart valves
The Annals of Thoracic Surgery, 2000The need for prosthetic heart valves was long recognized but seemed an impossible dream before 1952 when Dr Charles Hufnagel clinically introduced a ball valve that he placed into the descending thoracic aorta for treatment of aortic valvular insufficiency.
R A, DeWall, N, Qasim, L, Carr
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Mechanical Heart Valves in Children
Scandinavian Journal of Thoracic and Cardiovascular Surgery, 1984Longterm follow-up of 17 children, who consecutively underwent replacement of one cardiac valve with the Björk-Shiley prosthesis, is presented. The children's mean age was 8 years (range 4-12 years) and body weight 23.5 kg (range 15.0-38.4 kg) at the time of surgery 1970-80. Nine of the 17 operations (53%) were second-stage cardiac surgery.
A, Henze, D, Lindblom, V O, Björk
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Computational Mechanics of the Heart
2006zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Nash, M. P., Hunter, P. J.
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Fluid Mechanics of Heart Valves
Annual Review of Biomedical Engineering, 2004▪ Abstract Valvular heart disease is a life-threatening disease that afflicts millions of people worldwide and leads to approximately 250,000 valve repairs and/or replacements each year. Malfunction of a native valve impairs its efficient fluid mechanic/hemodynamic performance.
Ajit P, Yoganathan +2 more
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Canadian Journal of Medical Sciences, 1952
A practical mechanical heart and lung is described in which glass syringes are used to replace the ventricles. The pistons of the syringes are operated by a special cam rather than a simple crank. Thus the volume changes in the syringes are made to follow those of the mammalian ventricles.
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A practical mechanical heart and lung is described in which glass syringes are used to replace the ventricles. The pistons of the syringes are operated by a special cam rather than a simple crank. Thus the volume changes in the syringes are made to follow those of the mammalian ventricles.
openaire +2 more sources

