Mechanical Characteristics of Fresh and Frozen Human Descending Thoracic Aorta

Adham, Mustapha; Gournier, J. P.; Favre, Jean‐Pierre; Ducerf, C.; Baulieux, J.; Barral, Xavier; Pouyet, M

doi:10.1006/jsre.1996.0302

Cited by 96 publications

(81 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After sampling, the airways were immersed in a sterile buffered ionic solution specific for organ transplant (EuroCollins, Monico, Venice, Italy) (Adam et al, 1996;Adham et al, 1996). Once immersed in the solution, the tracheas were rapidly frozen and maintained at Ϫ20°C until the moment of the experiment (Goh et al, 1989;Adham et al, 1996).…”

Section: Materials and Methods Animals And Tissue Sampling: Striped Dmentioning

confidence: 99%

Structure and biomechanical properties of the trachea of the striped dolphin Stenella coeruleoalba: Evidence for evolutionary adaptations to diving

et al. 2005

View full text Add to dashboard Cite

This study analyzes the structure and mechanical properties of the trachea of the striped dolphin Stenella coeruleoalba, one of the most common cetacean species. The cetacean trachea is made up of closed or semiclosed cartilaginous rings without a paries membranaceus. Our results indicate that the inner lining of the trachea contains erectile tissue in which several venous lacunae permeate the mucosa. We also observed and described the presence of peripheral neurons containing nitric oxide along the rim of the venous lacunae. Data obtained from compression and tensile tests and comparison with the pig and goat tracheas indicate a higher stiffness and a different, higher breaking point for the dolphin trachea. On the whole, our data suggest that the trachea of the striped dolphin possesses structural properties that allow rapid filling with blood, possibly in relation to dive activities, and also allow modifications due to increased pressure and immediate return to the original shape without risks of permanent bending or rupture, as would happen in a terrestrial mammal. As the organ undergoes intense pressure difference during descent to optimal foraging depth and subsequent rapid ascent to surface, especially in deep dives of hundreds of meters, the specific structural and biomechanical peculiarities of the trachea of the striped dolphin may represent an evolutionary adaptation to life in the water and to diving.

show abstract

Section: Materials and Methods Animals And Tissue Sampling: Striped Dmentioning

confidence: 99%

Structure and biomechanical properties of the trachea of the striped dolphin Stenella coeruleoalba: Evidence for evolutionary adaptations to diving

et al. 2005

View full text Add to dashboard Cite

show abstract

“…1,[6][7][8]20,28,46,48,51,61 Using an identical protocol, the present authors investigated effects of refrigeration (>24 h) and freezing (3 months) on arterial mechanics. 55 That study identified significantly decreased ultimate stress and Modulus of Elasticity in refrigerated vessels.…”

Section: Effect Of Loading Rate and Storage Protocolmentioning

confidence: 99%

Biomechanical Characterization of Internal Layer Subfailure in Blunt Arterial Injury

et al. 2006

View full text Add to dashboard Cite

Blunt carotid artery injuries occur in 0.3% of blunt injured patients and may lead to devastating neurological consequences. However, arterial mechanics leading to internal layer subfailure have not been quantified. Twenty-two human carotid artery segments and 18 porcine thoracic aorta segments were opened to expose the intimal side and longitudinally distracted to failure. Porcine aortas were a geometrically accurate model of human carotid arteries. Internal layer subfailures were identified using videography and correlated with mechanical data. Ninety-three percent (93%) of vessels demonstrated subfailure prior to catastrophic failure. All subfailures occurred on the intimal surface. Initial subfailure occurred at 79% of the stress and 85% of the strain to catastrophic failure in younger porcine specimens, compared to 44% and 60%, respectively, in older human specimens. In most cases, multiple subfailures occurred prior to catastrophic failure. Due to limitations in human specimen quality (age, prior storage), young and fresh porcine aorta specimens are likely a more accurate model of clinical blunt carotid artery injuries. Present results indicate that vessels are acutely capable of maintaining physiologic function following initial subfailure. Delayed symptomatology commonly associated with blunt arterial injuries is explained by this mechanics-based and experimentally quantified onset of subcatastrophic failure.

show abstract

“…These heterogeneities can be due either to the calcifications or to the freezing. The differences in behavior between frozen tissue and fresh tissue were repeatedly studied in the literature [12] which shows the difference in fiber orientation constituting the different layers of the aortic tissue [13]. For the obtained displacement fields, two preferential radial and longitudinal directions are observed.…”

Section: Discussionmentioning

confidence: 97%

Characterization of the Mechanical Properties of the Human Aortic Arch Using an Expansion Method

Bou¹

2015

J Vasc Med Surg

View full text Add to dashboard Cite

Mechanical Characteristics of Fresh and Frozen Human Descending Thoracic Aorta

Cited by 96 publications

References 0 publications

Structure and biomechanical properties of the trachea of the striped dolphin Stenella coeruleoalba: Evidence for evolutionary adaptations to diving

Structure and biomechanical properties of the trachea of the striped dolphin Stenella coeruleoalba: Evidence for evolutionary adaptations to diving

Biomechanical Characterization of Internal Layer Subfailure in Blunt Arterial Injury

Characterization of the Mechanical Properties of the Human Aortic Arch Using an Expansion Method

Contact Info

Product

Resources

About