Continuous Intraoperative Perfusion Monitoring of Free Microvascular Anastomosed Fasciocutaneous Flaps Using Remote Photoplethysmography

Overview

Journal Sci Rep

Specialty Science

Date 2023 Jan 27

PMID 36707664

Authors

Sebastian P Schraven

Benjamin Kossack

Daniel Struder

Maximillian Jung

Lotte Skopnik

Justus Gross

Anna Hilsmann

Peter Eisert

Robert Mlynski

Eric L Wisotzky

Affiliations

Soon will be listed here.

Abstract

Flap loss through limited perfusion remains a major complication in reconstructive surgery. Continuous monitoring of perfusion will facilitate early detection of insufficient perfusion. Remote or imaging photoplethysmography (rPPG/iPPG) as a non-contact, non-ionizing, and non-invasive monitoring technique provides objective and reproducible information on physiological parameters. The aim of this study is to establish rPPG for intra- and postoperative monitoring of flap perfusion in patients undergoing reconstruction with free fasciocutaneous flaps (FFCF). We developed a monitoring algorithm for flap perfusion, which was evaluated in 15 patients. For 14 patients, ischemia of the FFCF in the forearm and successful reperfusion of the implanted FFCF was quantified based on the local signal. One FFCF showed no perfusion after reperfusion and devitalized in the course. Intraoperative monitoring of perfusion with rPPG provides objective and reproducible results. Therefore, rPPG is a promising technology for standard flap perfusion monitoring on low costs without the need for additional monitoring devices.

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