Torque properties of a rat oesophagus for physiological and diabetic conditions.
Physiol Meas
; 25(5): 1211-21, 2004 Oct.
Article
em En
| MEDLINE
| ID: mdl-15535186
ABSTRACT
In this paper the torque of an oesophagus is studied for physiological and diabetic conditions. Since the function of the oesophagus is mainly mechanical, this work is focused on providing quantitative measurement of the passive biomechanical properties of the oesophagus torque. The oesophagus was treated as a membrane when calculating the stress and strain. The torque versus twist-angle relation was approximated to be linear at a specified pressure and longitudinal stretch ratio. Thus, the shear modulus can be computed by the torque, twist angle and polar moment of inertia in this state. The shear modulus varies greatly with the changing inflation pressure and longitudinal stretch ratio. When the longitudinal stretch ratio or transmural pressure is constant, the shear modulus is increased after 28 days of diabetes.
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Base de dados:
MEDLINE
Assunto principal:
Diabetes Mellitus
/
Esôfago
Idioma:
En
Ano de publicação:
2004
Tipo de documento:
Article