Formerly, flap perfusion was assessed clinically by gross evaluation of the amount of fluorescein in the developed flap prior to transfer. Recently the laser Doppler velocimeter and the perfusion microfluorometer have been developed as aids in perfusion assessment. We have used each instrument in a series of reconstructive procedures employing pectoralis or trapezius myocutaneous flaps and a series of pig groin myocutaneous flaps to assess the contribution of each to the prognostication of flap viability. While the laser Doppler does provide useful information, we have found that the microfluorometer is more selective in representing the hemodynamics of the developed flap.
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