[Experimental study on monitor of microcirculation of random skin flaps and early division of their pedicles].
In a series of 30 random skin flaps formed in pigs, the skin capillary blood flow was measured with laser doppler flowmetry (LDF) pre-, and postoperatively and within 48 hours after pedicle division. The results showed that the change in the microcirculation can be divided into three phases: (1) rapid rising, (2) plateau, and (3) slow rising. The plateau stage may be considered as the critical period. Division of the flap before this "critical" period causes flap necrosis, while division after the period resulted in flap survival (100 percent). Comparison of preoperative and postoperative LDF values can be regarded as a reliable objective criterion for division of the pedicle.
Yang
X
X
Plastic Surgery Hospital, C.A.M.S., Beijing.
D000818:Animals; D062109:Dermatologic Surgical Procedures; D006085:Graft Survival; D017078:Laser-Doppler Flowmetry; D008833:Microcirculation; D012867:Skin / Q000098:blood supply*; D013524:Surgical Flaps; D013552:Swine; D013997:Time Factors