Monitoring free flaps and replanted digits via perfusion index - A proof of concept study

Strauss, Catharina and Anker, Alexandra and Klein, Silvan and Kemper, Robert and Brebant, Vanessa and Prantl, Lukas and Geis, Sebastian (2022) Monitoring free flaps and replanted digits via perfusion index - A proof of concept study. CLINICAL HEMORHEOLOGY AND MICROCIRCULATION, 80 (4). pp. 363-371. ISSN 1386-0291, 1875-8622

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Abstract

BACKGROUND: Early detection and treatment of vascular complications in replanted digits is essential for the survival. The perfusion index (PI) represents a marker of peripheral perfusion as it shows the ratio of pulsatile to non-pulsatile blood flow. OBJECTIVE: To evaluate the feasibility and applicability of the PI as a monitoring tool for free flaps and replanted digits by measuring the inter- and intraindividual changes in PI. METHODS: Five patients were postoperatively monitored according to intern standards by hourly clinical evaluation. Additionally, a pulse oximeter with SET-technology (R) (Masimo Radial 7, Masimo Corporation, Irvine, USA) was added with a LNCS (R) Red TFA-1 SpO2 sensor (Masimo Corporation, Irvine, USA) and respectively a LNCS (R) Neo-3 neonatal finger clip to evaluate the perfusion via PI and SpO2. RESULTS: All patients showed sufficient perfusion in clinical controls. There was no detectable vascular complication during follow-up. Mean perfusion index was 0.93 with a median of 0.44. The patients showed a mean SpO2 of 90.59% with a median of 89.21%. CONCLUSION: Our results show a great intra- and interindividual range of PI and SpO2. SpO2 provided an even greater range than PI. Trends in intraindividual PI changes may be a promising monitoring tool for free flaps and replanted digits.

Item Type: Article
Uncontrolled Keywords: PULSE OXIMETRY; PERIPHERAL PERFUSION; DETECT; TOOL; Perfusion index; monitoring; free flap; replanted digits
Subjects: 600 Technology > 610 Medical sciences Medicine
Divisions: Medicine > Zentren des Universitätsklinikums Regensburg > Zentrum für Plastische-, Hand- und Wiederherstellungschirurgie
Depositing User: Dr. Gernot Deinzer
Date Deposited: 13 Feb 2024 10:03
Last Modified: 13 Feb 2024 10:03
URI: https://pred.uni-regensburg.de/id/eprint/57147

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