Effect of photodynamic therapy on revascularization of fasciocutaneous flaps

Michael J. Belmont, Nicole Marabelle, Thomas S. Mang, Richard Hall, Mark K. Wax

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

Objective: Photodynamic therapy (PDT) may be used as an adjuvant intraoperative treatment to improve locoregional control. PDT has been shown both to delay wound healing and to have a deleterious effect on flap survival after a primary ischemic insult. This delay in wound healing may make the flap dependent on its pedicled blood supply for a prolonged period. Long-term flap loss may be experienced. The effect of PDT on flap revascularization, with subsequent dependence on its vascular pedicle, is evaluated. Study Design: Randomized controlled trial using a rodent model. Methods: A rat fasciocutaneous flap was used. Study groups were as follows: group I received no treatment; group II received treatment with 630-nm light; groups III and IV were given Photofrin (in group III, loupes without a fiberoptic light source were used for flap elevation, and in group IV, light source was employed); and group V was given Photofrin and 630-nm light. Primary ischemic times of 2 or 4 hours were used. Vascular pedicles were ligated on postoperative day (POD) 5, 6, or 7, and percentage of flap survival was evaluated 7 days later. Results: With 2 hours of ischemia, revascularization was decreased in the PDT group on POD 6 (P < .05) and on day 7 (P < .005) when compared with the other groups. With 4 hours of ischemia, revascularization was decreased in the PDT group on PODs 5 (P < .001), 6 (P < .01), and 7 (P < .005). Conclusion: Intraoperative PDT decreases revascularization of a rat fasciocutaneous flap.

Original languageEnglish (US)
Pages (from-to)942-945
Number of pages4
JournalLaryngoscope
Volume110
Issue number6
DOIs
StatePublished - Jun 2000

Keywords

  • Fasciocutaneous
  • Flap
  • Photodynamic therapy
  • Revascularization

ASJC Scopus subject areas

  • Otorhinolaryngology

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