Durlik M, Benichoux R, Mainard D, Merle M. Laser-Doppler versus fluorometry in the postoperative assessment of a cutaneous free flap.
Microsurgery 1989;
10:170-4. [PMID:
2529413 DOI:
10.1002/micr.1920100305]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
To find the optimal means for monitoring the vascularity of a cutaneous free flap in the postoperative period, we have experimentally compared laser-Doppler velocimetry and fluorometry. Using the rat groin model, five groups were evaluated: 1. flap isolation without division of the pedicle vessels (island flap); 2) flap isolation, division, and repair of the pedicle artery and vein (free flap); 3) flap isolation, with ligation of the pedicle artery immediately or 1 hour later; 4) flap isolation, with ligation of the pedicle vein immediately or 1 hour later; 5) flap isolation, with ligation of the pedicle artery and vein immediately or 1 hour later. The laser-Doppler processes the signal by combination of the root mean square and differential amplification. The fluoroscan gives an index in relation to the fluorescence of a control area. The results obtained with both methods correlated well with findings in clinical situations. However, the laser-Doppler readings were more rapid and sensitive than those with fluorometry. We suggest that laser-Doppler velocimetry is a superior means of monitoring the vascular status of a free tissue transfer or digital replant.
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