| Autor: |
Morris, Steven F., Pang, Cho Y., Mahoney, James, Lofchy, Neal, Kaddoura, Imad L., Patterson, Robert, Lista, Frank |
| Zdroj: |
Plastic and Reconstructive Surgery; August 1989, Vol. 84 Issue: 2 p314-322, 9p |
| Abstrakt: |
Skin flaps constructed on expanded skin usually include the underlying capsular tissue. It has been hypothesized that capsulectomy may jeopardize the viability of the expanded skin flap. The experiments reported herein were designed to test this hypothesis. Specifically, we studied the hemodynamics and viability of random-pattern skin flaps (8 ± 20 cm) raised on delayed bipedicle flaps (group A) and on expanded skin pockets with capsulectomy at the time of flap elevation (group B) or with intact underlying capsular tissue (group C). Each group was randomly assigned to each flank in 16 pigs. Skin pockets were expanded by inflation of subcutaneous silicone tissue expanders with sterile saline (299 ± 7 ml; ± ± SEM) over a period of 3 weeks. At the end of this period, the bipedicle flaps were constructed. Eight days later, random-pattern skin flaps were raised on bipedicle flaps and skin pockets. The length and area of skin flap viability, judged by the fluorescein dye test performed 1 day postoperatively, were not significantly different (p> 0.05) among groups A, B, and C (n = 31 to 32). There also were no significant differences (p> 0.05) in total skin capillary blood flow measured 1 day postoperatively (A = 2.6 ± 0.4, B = 2.4 ± 0.4, and C = 2.7 ± 0.6 ml/min per flap; n = 15 to 16) and in skin viability assessed 7 days postoperatively (A = 74 ± 2, B = 75 ± 2, and C = 76 ± 2 percent; n = 16) among delayed skin flaps and skin flaps raised on expanded skin pockets with or without capsulectomy. The results of this flap viability study were confirmed in 5 minipigs in a separate experiment. |
| Databáze: |
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