Tang Y B, Simchon S, Chen H C
Department of Plastic and Reconstructive Surgery, National Taiwan University Hospital, Taipei.
Scand J Plast Reconstr Surg Hand Surg. 2000 Sep;34(3):207-12. doi: 10.1080/02844310050159774.
In recent years, it has been found that maintenance of venous circulation alone may support a small flap with no direct arterial inflow. The clinical application of a venous flap has potential in the field of microsurgery. The purpose of this study was to evaluate the haemodynamics within a pedicled venous flap in rabbits, compared with those of a composite graft. Pedicled venous flaps and composite grafts were raised from the abdominal walls of 30 adult New Zealand rabbits. Flap survival was measured and recorded and blood flow studies with microspheres were done for seven days. The viability of the pedicled venous flaps was much better than that of the composite grafts. At two weeks 24 of the venous flaps (80%) showed more than 75% surviving, but 29 (97%) of the composite grafts had less than 25% surviving. The results suggest that the blood flow through a patent vein maintained in a venous skin flap can provide enough nutrients for the flap to survive during the initial three days until neovascularisation. The venous flap receives more blood flow than a composite graft. We conclude that a venous flap depends on blood supply from the axial vein in addition to neovascularisation to maintain its survival.
近年来，人们发现仅靠维持静脉循环就可以支持一个没有直接动脉供血的小皮瓣。静脉皮瓣在显微外科领域具有临床应用潜力。本研究的目的是评估兔带蒂静脉皮瓣内的血流动力学，并与复合组织移植的血流动力学进行比较。从30只成年新西兰兔的腹壁制备带蒂静脉皮瓣和复合组织移植。测量并记录皮瓣存活情况，并用微球进行为期7天的血流研究。带蒂静脉皮瓣的存活能力远优于复合组织移植。两周时，24个静脉皮瓣（80%）存活超过75%，但29个（97%）复合组织移植存活不足25%。结果表明，在静脉皮瓣中保持通畅的静脉内的血流可以为皮瓣提供足够的营养，使其在血管新生之前的最初三天内存活。静脉皮瓣比复合组织移植接受更多的血流。我们得出结论，静脉皮瓣除了依靠血管新生外，还依赖于轴静脉的血液供应来维持其存活。
