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European Archives of Oto-Rhino-Laryngology

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01-07-2008 | Head and Neck

Monitoring microvascular free flaps with tissue oxygen measurement and pet

Authors: Aleksi R. Schrey, Ilpo A. J. Kinnunen, Reidar A. Grénman, Heikki R. I. Minn, Kalle M. J. Aitasalo

Published in: European Archives of Oto-Rhino-Laryngology | Special Issue 1/2008

Abstract

Tissue oxygen measurement and positron emission tomography (PET) were evaluated as methods for predicting ischemia in microvascular free flaps of the head and neck. Ten patients with head and neck squamous cell cancer underwent resection of the tumour followed by microvascular reconstruction with a free flap. Tissue oxygenation of the flap (P_tiO₂) was continuously monitored for three postoperative (POP) days and the blood flow of the flap was assessed using oxygen-15 labelled water and PET. In three free flaps a perfusion problem was suspected due to a remarkable drop in P_tiO₂-values, due to two anastomosis problems and due to POP turgor. No flap losses occurred. During the blood flow measurements with PET [mean 8.5 mL 100 g⁻¹ min⁻¹(SD 2.5)], the mean P_tiO₂ of the flaps [46.8 mmHg (SD 17.0)] appeared to correlate with each other in each patient (p < 0.05, n = 10). Tissue oxygenation measurement is a feasible monitoring system of free flaps. The perfusion-study with PET correlates with P_tiO₂-measurement.

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Title: Monitoring microvascular free flaps with tissue oxygen measurement and pet
Authors: Aleksi R. Schrey
Ilpo A. J. Kinnunen
Reidar A. Grénman
Heikki R. I. Minn
Kalle M. J. Aitasalo
Publication date: 01-07-2008
Publisher: Springer-Verlag
Published in: European Archives of Oto-Rhino-Laryngology / Issue Special Issue 1/2008
Print ISSN: 0937-4477
Electronic ISSN: 1434-4726
DOI: https://doi.org/10.1007/s00405-008-0585-0

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Monitoring microvascular free flaps with tissue oxygen measurement and pet

Abstract

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Abstract

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