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Titolo:
In vivo analysis of dynamic tensile stresses at arterial end-to-end anastomoses. Influence of suture-line and graft on anastomotic biomechanics
Autore:
Ulrich, M; Staalsen, NH; Djurhuus, CB; Christensen, TD; Nygaard, H; Hasenkam, JM;
Indirizzi:
Aarhus Univ Hosp, Skejby Sygehus, Dept Thorac & Cardiovasc Surg, DK-8200 Aarhus N, Denmark Aarhus Univ Hosp Aarhus Denmark N iovasc Surg, DK-8200 Aarhus N, Denmark
Titolo Testata:
EUROPEAN JOURNAL OF VASCULAR AND ENDOVASCULAR SURGERY
fascicolo: 6, volume: 18, anno: 1999,
pagine: 515 - 522
SICI:
1078-5884(199912)18:6<515:IVAODT>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
COMPLIANCE MISMATCH; INTIMAL HYPERPLASIA; ELASTIC PROPERTIES; FLOW; INHOMOGENEITIES; PATENCY; DACRON; MODEL; VEIN; WALL;
Keywords:
craft patency; anastomosis; stiffness; elasticity; compliance; hysteresis; animal model;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Ulrich, M Aarhus Univ Hosp, Skejby Sygehus, Dept Thorac & Cardiovasc Surg,Brendstrupgaardsvej, DK-8200 Aarhus N, Denmark Aarhus Univ Hosp Brendstrupgaardsvej Aarhus Denmark N , Denmark
Citazione:
M. Ulrich et al., "In vivo analysis of dynamic tensile stresses at arterial end-to-end anastomoses. Influence of suture-line and graft on anastomotic biomechanics", EUR J VAS E, 18(6), 1999, pp. 515-522

Abstract

Objective: to determine the influence of an anastomotic suture line and a graft on dynamic tensile stresses of vascular end-to-end anastomoses in vivo. Material and methods: the abdominal aorta of twelve 35-kg pigs was used asan experimental model. Simultaneous recordings of internal arterial diameter and pressure were performed on each pig at 3 successive stages: (1) The genuine artery (REF), (2) artery-artery (A-A) and (3) graft-artery (G-A) anastomosis at 1-mm increments in the immediate perianastomotic area. Thereby, RD (relative distension), CC (compliance coefficient), E-p (dynamic pressure-strain elastic modulus) and hysteresis loop areas could be calculated for every measuring point. Results: the graft was significantly stiffer than REF. A-A and G-A anastomoses were significantly less compliant than REF. Maximum E-p, minimum CC and hysteresis loop areas were found at the anastomotic line due to minimum anastomotic RD. Downstream of the G-A anastomosis, the RD, CC, E-p and loop areas were significantly different from REF, but significantly different from A-A. Conclusion: an animal model for acute studies of mechanical properties of vascular end-to-end anastomoses was developed. The main determinant for anastomotic biomechanics was the suture-line itself.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/01/21 alle ore 09:56:55