2-DIMENSIONAL ANALYSIS OF HEMODYNAMIC-CHANGES IN AXIAL AND RANDOM PATTERN FLAPS

The present study was performed to evaluate the time course of hemodyn amic change in axial and random pattern flaps two-dimensionally The ax ial pattern flap, including the central auricular artery and vein, and the random pattern flap without these vessels were created in the aur icles of the rabbit. The blood Row of these flaps was investigated and assessed using laserflowgraphy, which provides a two-dimensional anal ysis of microcirculation. In the axial pattern flap, a gradient of blo od flow toward the short axis of the flap and decreased blood flow in the surrounding area were noticed immediately after operation. The hem odynamic changes became less marked with time. In the random pattern f lap, a gradient of blood flow toward the long axis of the flap was not iced around 6 hr after operation and the blood flow in the surrounding area increased throughout the investigations.