RESUMO
OBJECTIVE: The aim of this study is to investigate whether there is a relationship between age or sex and the thickness of the radial artery wall. MATERIALS AND METHODS: We harvested human radial arteries from 48 cadavers (30 men and 18 women) in the anatomy laboratory. Histological sections of 3 µm thickness were prepared at the Laboratory of Anatomy and Pathological Cytology, mounted on slides, and stained with hematoxylin-phloxine-safran, Masson's trichrome, and orcein. The thickness of each radial artery wall (intima-media thickness) was measured using optical microscopy, and an average measurement was established among the three thicknesses (upper third, middle third, and lower third). STATISTICAL METHODS: Statistical analyses were performed using the R software. Means and standard deviations were utilized. A correlation analysis was also conducted to assess the relationship between radial artery wall thickness and subjects' age. RESULTS: On average, the thickness of the left radial artery wall and that of the right radial artery measured 282 (34) micrometers (µm). We found a correlation between radial artery wall thickness and age in both men (p < 0.001) and women (p < 0.001). CONCLUSIONS: In conclusion, this study elucidates that radial artery wall thickness is related to age and sex in its assessment.
RESUMO
Valve-in-valve transcatheter aortic valve implantation is currently used for failed bioprosthesis. The use of a transcatheter prosthesis in a regurgitant noncalcified root implanted Medtronic Freestyle prosthesis is particularly challenging. We present a successful transaxillary valve-in-valve implantation of a self-expandable transcatheter aortic valve prosthesis in a failed Freestyle bioprothesis implanted eleven years earlier. Tips and tricks are discussed.
