冠心病治疗

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TUhjnbcbe - 2021/11/11 20:11:00

各类缝合技术

Basicsuturingequipmentincludesaneedledriver,forceps,andsuturescissors:Awidevarietyofbothabsorbableandnonabsorbablesuturematerialisavailable.Othervariablesincludesuturesize(e.g.,4-0,5-0,6-0),needlesize,andtype(e.g.,PS-2,reversecutting,conventionalcutting):Asimplemodificationtotheangleoftheneedlemaymakesubcutaneoussuturingeasier.A,Inmostsituations,theneedleshouldbeloadedperpendiculartotheneedledriver.B,Ifthewoundisnarrow,theneedlecanbegraspedataslightlyobtuse,-degreeangletotheneedledriver:A,Thenargriptechniqueofhandlingtheneedleholder.Theindexfingerisplacedonthesideoftheneedleholder,whereitguidesplacementoftheneedle.Neithertheindexnorthemiddlefingerisplacedintheringlethole.Thismethodallowsmorerapidsuturing.B,Analternativemethodisthethumb-ringfingergrip.C,Holdtheforcepsinyournondominanthandasyouwouldholdapenciloradart:Techniqueforclosureofparallellacerationsinwhichthecentraltissueislandhasanintactbase:Correctionofadog-ear.Thecriticalmaneuverisshown,wheretheskinispulledtighttoalignthestarredareasandidentifythetriangularpieceofexcesstissuetobeexcised(1d).Notethatastraightlacerationbe
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