In-vivo quantitative evaluation of perfusion zones and perfusion gradient in the deep inferior epigastric artery perforator flap

Michel Saint-Cyr, Chrisovalantis Lakhiani, Angela Cheng, Michael Mangum, Jinyang Liang, Sumeet Teotia, Edward H. Livingston, Karel J. Zuzak

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

The selection of well-vascularized tissue during DIEP flap harvest remains controversial. While several studies have elucidated cross-midline perfusion, further characterization of perfusion to the ipsilateral hemiabdomen is necessary for minimizing rates of fat necrosis or partial fat necrosis in bilateral DIEP flaps. Eighteen patients (29 flaps) underwent DIEP flap harvest using a prospectively designed protocol. Perforators were marked and imaged with a novel system for quantitatively measuring tissue oxygenation, the Digital Light Hyperspectral Imager. Images were then analyzed to determine if perforator selection influenced ipsilateral flap perfusion. Flaps based on a single lateral row perforator (SLRP) were found to have a higher level of hemoglobin oxygenation in Zone I (mean %HbO2 = 76.1) compared to single medial row perforator (SMRP) flaps (%HbO2 = 71.6). Perfusion of Zone III relative to Zone I was similar between SLRP and SMRP flaps (97.4% vs. 97.9%, respectively). These differences were not statistically significant (p>0.05). Perfusion to the lateral edge of the flap was slightly greater for SLRP flaps compared SMRP flaps (92.1% vs. 89.5%, respectively). SMRP flaps had superior perfusion travelling inferiorly compared to SLRP flaps (88.8% vs. 83.9%, respectively). Overall, it was observed that flaps were better perfused in the lateral direction than inferiorly. Significant differences in perfusion gradients directed inferiorly or laterally were observed, and perforator selection influenced perfusion in the most distal or inferior aspects of the flap. This suggests broader clinical implications for flap design that merit further investigation.

Original languageEnglish (US)
Title of host publicationEmerging Digital Micromirror Device Based Systems and Applications V
DOIs
StatePublished - Jun 12 2013
EventEmerging Digital Micromirror Device Based Systems and Applications V - San Francisco, CA, United States
Duration: Feb 5 2013Feb 6 2013

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8618
ISSN (Print)0277-786X

Other

OtherEmerging Digital Micromirror Device Based Systems and Applications V
CountryUnited States
CitySan Francisco, CA
Period2/5/132/6/13

Keywords

  • DIEP flap
  • Deep inferior epigastric artery perforator flap
  • Free flap
  • Hyperspectral
  • Tissue imaging

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Saint-Cyr, M., Lakhiani, C., Cheng, A., Mangum, M., Liang, J., Teotia, S., Livingston, E. H., & Zuzak, K. J. (2013). In-vivo quantitative evaluation of perfusion zones and perfusion gradient in the deep inferior epigastric artery perforator flap. In Emerging Digital Micromirror Device Based Systems and Applications V [861806] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8618). https://doi.org/10.1117/12.2004972