Mechanical properties of human pericardium. Differences in viscoelastic response when compared with canine pericardium.
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چکیده
منابع مشابه
Mechanical properties of human pericardium. Differences in viscoelastic response when compared with canine pericardium.
Whereas most experiments on the mechanical function of the pericardium have been performed on dogs, very little is known about the applicability of those data to humans. To examine the tensile viscoelastic properties of fresh human pericardium, we have used the methods from our previous study of canine pericardium. Although the mechanical responses of canine and human pericardium were qualitati...
متن کاملMechanical and structural correlates of canine pericardium.
We have assessed viscoelastic properties of pericardium within the physiological range of stresses and related mechanical behavior to fiber direction as defined by scanning electron microscopy. Stiffness, stress relaxation, and creep were measured in samples taken from the anterior surface of 14 canine pericardia. Stress-strain relations generally were not exponential; stiffness at a stress of ...
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This paper considers the effects of the pericardium on a mechanical model of the heart. The model, based on the theory of large elastic deformation, makes use of experimental data for the pericardium reported herein. INTRODUCTION The pericardium is the tough fibrous sac enclosing the lean of most vertebrates, including man. It serves to .told the heart in a fixed position and to isolate and xot...
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By using excised postmortem hearts obtained from 15 mongrel dogs with the pericardium intact, we investigated mechanical interactions between the four heart chambers from the standpoint of ventricular pressure-volume relationships. The interactions investigated were those between (1) the atrium and the ventricle, (2) the right ventricle and left ventricles, (3) the atrium and one ventricle vs. ...
متن کاملAdherent Pericardium in Children
pericardium in children, the two most important of which are? (i) that adherent pericardium is the most common cause of enlarged heart in children, and (2) that this sequence of pericarditis is much more serious in its nature than valvular disease, and that children in whom it is present will probably never reach adult life. These facts are not new; but although known to those who have had expe...
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ژورنال
عنوان ژورنال: Circulation Research
سال: 1985
ISSN: 0009-7330,1524-4571
DOI: 10.1161/01.res.57.3.475