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Titolo:
Acute changes in aortic wall mechanical properties after stent placement in rabbits
Autore:
Vernhet, H; Juan, JM; Demaria, R; Oliva-Lauraire, MC; Senac, JP; Dauzat, M;
Indirizzi:
Univ Montpellier 1, Fac Med, Lab Cardiovasc Physiol, F-30900 Nimes, FranceUniv Montpellier 1 Nimes France F-30900 c Physiol, F-30900 Nimes, France Montpellier Univ Hosp, Dept Thorac & Cardiovasc Imaging, Montpellier, France Montpellier Univ Hosp Montpellier France c Imaging, Montpellier, France
Titolo Testata:
JOURNAL OF VASCULAR AND INTERVENTIONAL RADIOLOGY
fascicolo: 5, volume: 11, anno: 2000,
pagine: 634 - 638
SICI:
1051-0443(200005)11:5<634:ACIAWM>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
EXPANDING METALLIC STENTS; ATHEROSCLEROTIC RABBIT; BALLOON ANGIOPLASTY; COMPLIANCE MISMATCH; GRAFTS; FLOW;
Keywords:
arteries; grafts and prostheses; endovascular stent-grafts; stents and prostheses;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Dauzat, M Univ Montpellier 1, Fac Med, Lab Cardiovasc Physiol, Av Kennedy,F-30900 Nimes, France Univ Montpellier 1 Av Kennedy Nimes France F-30900 imes, France
Citazione:
H. Vernhet et al., "Acute changes in aortic wall mechanical properties after stent placement in rabbits", J VAS INT R, 11(5), 2000, pp. 634-638

Abstract

PURPOSE: To evaluate mechanical property changes after endovascular stent placement in small-diameter arteries,MATERIALS AND METHODS: Self-expanding stents (Wallstent) were placed in the infrarenal aorta of five New Zealand White rabbits via a surgical right femoral approach. Blood pressure changes (Delta P) were monitored in the aorta. Blood flow velocity was measured with a 20-MHz, pulsed Doppler probe (n= 4) to calculate the pulsatility index. Aortic diameter (d(A)) sand diameter changes (Delta d) were measured with a 20-MHz probe in echo-tracking mode, Diameter compliance (Cd) and distensibility coefficient (DC) were calculated as Cd = 2 Delta d/Delta P and DC = 2 Delta d/Delta P/d(A). RESULTS: Aortic diameter increased from 3.360 +/- 0.4033 mm to 4.020 +/- 0.3033 mm after stent placement at the stent level only. Compliance decreased from 77.644 +/- 24.306 mm kPa(-1) to 31.150 +/- 8.245 x 10(-3) mm kPa(-1)at the stent level, and was then significantly lower than upstream (98.500+/- 53.196 mm kPa(-1)) and down-stream (59.047 +/- 13.833 mm kPa(-1)). There was no significant change in pulsatility index. CONCLUSIONS: Endovascular stent placement produces a significant decrease in arterial wall compliance of the rabbit abdominal aorta.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 10:14:59