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Changes in Wall Mechanics After Endovascular Stenting in the Rabbit Aorta

Comparison of Three Stent Designs

Hélène Vernhet1, Roland Demaria1, Jean Marie Juan1, Marie Claire Oliva-Lauraire1, Jean Paul Sénac2 and Michel Dauzat1

1 Laboratory of Cardiovascular Physiology, Montpellier I University, Faculty of Medicine, Av. Kennedy, Nîmes F 30907, France.
2 Department of Thoracic and Cardiovascular Imaging, Montpellier University Hospital, 34295-Montpellier Cedex, France.



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  		Fig. 1. —Drawing shows location of diameter and flow measurements on rabbit aorta, at stent level (S), upstream (U), and downstream (D) from stent.

 


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  		Fig. 2A. —Comparative presentations of diameter (d), systolic diameter change ({Delta}d), blood pressure (P), and ECG, at level of stent, before and after stenting. Recordings show Wallstent (Schneider, Bülach, Switzerland) (rabbit 2) (A), Palmaz stent (Johnson & Johnson, Warren, NJ) (rabbit 6) (B), and Jostent (Jomed, Rangendingen, Germany) (rabbit 12) (C). Note decrease in systolic diameter change after stenting in all instances.

 


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  		Fig. 2B. —Comparative presentations of diameter (d), systolic diameter change ({Delta}d), blood pressure (P), and ECG, at level of stent, before and after stenting. Recordings show Wallstent (Schneider, Bülach, Switzerland) (rabbit 2) (A), Palmaz stent (Johnson & Johnson, Warren, NJ) (rabbit 6) (B), and Jostent (Jomed, Rangendingen, Germany) (rabbit 12) (C). Note decrease in systolic diameter change after stenting in all instances.

 


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  		Fig. 2C. —Comparative presentations of diameter (d), systolic diameter change ({Delta}d), blood pressure (P), and ECG, at level of stent, before and after stenting. Recordings show Wallstent (Schneider, Bülach, Switzerland) (rabbit 2) (A), Palmaz stent (Johnson & Johnson, Warren, NJ) (rabbit 6) (B), and Jostent (Jomed, Rangendingen, Germany) (rabbit 12) (C). Note decrease in systolic diameter change after stenting in all instances.

 

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