Tratamento dos aneurismas da aorta descendente por endoprótese (tromba de elefante)

Palma, Honório; Juliano, João Alessio; Cal, Ruy Guilherme Rodrigues; Almeida, Dirceu Rodrigues; Ota, Luiz Horitoshi; Gianotti, Inês Abrantes; Andrade, José Carlos S; Buffolo, Ênio

doi:10.1590/s0102-76381989000300002

Cited by 5 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Dake et al [2] were the pioneers to use the stent in the thoracic aorta. Since then, several other groups have reported success in the treatment of different pathological conditions of the aorta with different types of endoprostheses, thereby reducing morbidity and mortality rates in specific groups of patients [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Reação histopatológica da parede da aorta abdominal ao stent não recoberto

Bombonato

Palma

Marcondes

et al. 2006

Rev Bras Cir Cardiovasc

View full text Add to dashboard Cite

Reação histopatológica da parede da aorta abdominal ao stent não recoberto Histopathological reaction of the abdominal aorta wall to non-covered stents Abstract Objective: To evaluate the histopathological reaction of the abdominal aorta wall in pigs' renal arteries to the presence of non-covered stainless steel stents. Methods: The abdominal aorta of ten pigs (6 months old and weighing 86.6 kg on average) was histopathologically studied 100 days after the implant of stainless steel stents in the abdominal aorta, with one segment of the stent implanted in the renal artery. Self-expanding non-covered stents were released by laparotomy. The histological slices were made at the transition from the normal aorta and the aorta containing the stent; the aorta portion containing the stent; the portion with the ostia of renal arteries; periaortic lymph nodes and renal parenchyma. The samples were stained by the hematoxylin and eosin technique. Results: Macroscopic findings showed periaortic lymphadenopathy, thickened aortic wall, patency of lumbar and renal arteries and normal renal anatomical structure. Microscopic analyses near the stents revealed thickening of vessel wall secondary to intima fibrosis, and media layer affected by interstitial fibrosis. Micrometric measurements of aorta wall with the stent, compared to the aortic portion without it, presented a 75.90% increase in the total thickness of the wall by thickening of the intima layer secondary to fibroblast proliferation, collagen deposits with lymphocytary inflammatory infiltrate and foreign body-type granulomas. Conclusion: The non-covered stainless steel stents in pigs' aortas produced a significant inflammatory reaction with fibrosis in the media and intima layers evidenced by histopathological analyses; their presence did not interfere in the patency of the abdominal aorta or the renal and lumbar arteries.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Stainless steel stents covered with polyester to treat type-B aortic dissections were first used by the cardiovascular surgery group of the Federal University of São Paulo (UNIFESP) as an alternative to elephant-trunk endoprostheses [3,4,8,9]. Recently, this group reported the success and complications with this type of prosthesis.…”

Section: Introductionmentioning

confidence: 99%