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Article: Effect of torsion on microvenous anastomotic patency in a rat model and early thrombolytic phenomenon

TitleEffect of torsion on microvenous anastomotic patency in a rat model and early thrombolytic phenomenon
Authors
Issue Date2003
PublisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/35757
Citation
Microsurgery, 2003, v. 23 n. 4, p. 381-386 How to Cite?
AbstractTorsion at the microanastomosis site is a basic fault and should be avoided. In this study, we investigate the effects of different degrees of microvenous torsion on patency and its physical changes on anastomoses in a rat model. One hundred anastomoses were performed at different degrees of torsion, using femoral veins of Sprague-Dawley rats. Anastomoses were performed at 0°, 45°, 90°, 135°, and 180° of torsion randomly. Patency tests immediately, 1 h, and 1 week after the anastomoses were checked, using the refill test. Measurements of external diameter were recorded at three points: one at the anastomosis site, and the others 2 mm proximal and distal to the anastomotic site. Finally, histopathologic and scanning electron microscopy studies were performed. Subsequently, because of the peculiar phenomenon of early recannulation of the thrombosed vessels, 20 vessels were also explored on the first and the third days postoperatively. The data demonstrate that torsion at 180° compared with 0°, 45°, and 90°, impaired patency significantly (P < 0.005). In the subsequent study of 20 veins that were thrombosed on the first day, all became patent on the third day and remained so. In conclusion, rotation of a microvenous anastomosis begins to affect the patency rate at 90° of torsion, and at 180° has a patency rate of only 25%. However, all become patent again from the third day onwards. Thrombosis of rat femoral veins without chronic obstruction results in rapid lysis of thrombus and transient proliferative changes. © 2003 Wiley-Liss, Inc.
Persistent Identifierhttp://hdl.handle.net/10722/79563
ISSN
2015 Impact Factor: 2.054
2015 SCImago Journal Rankings: 1.392
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorBilgin, SSen_HK
dc.contributor.authorTopalan, Men_HK
dc.contributor.authorIp, WYen_HK
dc.contributor.authorChow, SPen_HK
dc.date.accessioned2010-09-06T07:56:04Z-
dc.date.available2010-09-06T07:56:04Z-
dc.date.issued2003en_HK
dc.identifier.citationMicrosurgery, 2003, v. 23 n. 4, p. 381-386en_HK
dc.identifier.issn0738-1085en_HK
dc.identifier.urihttp://hdl.handle.net/10722/79563-
dc.description.abstractTorsion at the microanastomosis site is a basic fault and should be avoided. In this study, we investigate the effects of different degrees of microvenous torsion on patency and its physical changes on anastomoses in a rat model. One hundred anastomoses were performed at different degrees of torsion, using femoral veins of Sprague-Dawley rats. Anastomoses were performed at 0°, 45°, 90°, 135°, and 180° of torsion randomly. Patency tests immediately, 1 h, and 1 week after the anastomoses were checked, using the refill test. Measurements of external diameter were recorded at three points: one at the anastomosis site, and the others 2 mm proximal and distal to the anastomotic site. Finally, histopathologic and scanning electron microscopy studies were performed. Subsequently, because of the peculiar phenomenon of early recannulation of the thrombosed vessels, 20 vessels were also explored on the first and the third days postoperatively. The data demonstrate that torsion at 180° compared with 0°, 45°, and 90°, impaired patency significantly (P < 0.005). In the subsequent study of 20 veins that were thrombosed on the first day, all became patent on the third day and remained so. In conclusion, rotation of a microvenous anastomosis begins to affect the patency rate at 90° of torsion, and at 180° has a patency rate of only 25%. However, all become patent again from the third day onwards. Thrombosis of rat femoral veins without chronic obstruction results in rapid lysis of thrombus and transient proliferative changes. © 2003 Wiley-Liss, Inc.en_HK
dc.languageengen_HK
dc.publisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/35757en_HK
dc.relation.ispartofMicrosurgeryen_HK
dc.rightsMicrosurgery. Copyright © John Wiley & Sons, Inc.en_HK
dc.titleEffect of torsion on microvenous anastomotic patency in a rat model and early thrombolytic phenomenonen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0738-1085&volume=23&spage=381&epage=386&date=2003&atitle=Effect+of+torsion+on+microvenous+anastomotic+patency+in+a+rat+model+and+early+thrombolytic+phenomenonen_HK
dc.identifier.emailIp, WY: wyip@hku.hken_HK
dc.identifier.emailChow, SP: spchow@hku.hken_HK
dc.identifier.authorityIp, WY=rp00401en_HK
dc.identifier.authorityChow, SP=rp00064en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/micr.10150en_HK
dc.identifier.pmid12942531en_HK
dc.identifier.scopuseid_2-s2.0-0042834106en_HK
dc.identifier.hkuros85761en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0042834106&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume23en_HK
dc.identifier.issue4en_HK
dc.identifier.spage381en_HK
dc.identifier.epage386en_HK
dc.identifier.isiWOS:000185104000015-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridBilgin, SS=7003928582en_HK
dc.identifier.scopusauthoridTopalan, M=6701722841en_HK
dc.identifier.scopusauthoridIp, WY=35549641700en_HK
dc.identifier.scopusauthoridChow, SP=7201828376en_HK

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