Continuous intraoperative perfusion monitoring of free microvascular anastomosed fasciocutaneous flaps using remote photoplethysmography

Author:

Schraven Sebastian P.,Kossack Benjamin,Strüder Daniel,Jung Maximillian,Skopnik Lotte,Gross Justus,Hilsmann Anna,Eisert Peter,Mlynski Robert,Wisotzky Eric L.

Abstract

AbstractFlap 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.

Funder

Bundesministerium für Bildung und Forschung

Deutsche Forschungsgemeinschaft

Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut HHI

Publisher

Springer Science and Business Media LLC

Subject

Multidisciplinary

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