Abstract
Monitoring of the tissue graft during and after the grafting operation is useful in reducing the risk for tissue ischemia, which may lead to even graft loss. Possible complications should be detected as early as possible in order to minimize the re-operation. Three models representing muscle tissue were created in FEMLAB: an isotropic model and two anisotropic models, the latter ones having the electrodes either perpendicular or parallel to the muscle fibres. Eleven tetrapolar measurement configurations having varying inter-electrode distances were modelled in each model to study their measurement sensitivity distributions. The results showed effects of anisotropy on both the measured impedance and the associated sensitivity distributions. For example, regions of negative sensitivity or depth for maximum sensitivity were dependant on whether the electrodes were placed perpendicular or parallel to the muscle fibres. The results point out also how to estimate the tissue anisotropy and how to measure impedance changes deeper in the tissue volume. The impedance method seems to be suitable for monitoring the muscle graft healing. However, more work is needed for reliable interpretations between the measured impedance and physiological changes.
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References
Roberts PJ, Alhava E, Höckerstedt K et al. (ed.) (2004). Kirurgia, 1st ed. Kustannus Oy Duodecim, Helsinki
Whitaker IS, Oliwer DW, Ganchi PA (2003) ) Postoperative monitoring of microvascular tissue transfers: current practice in the United Kingdom and Ireland. Plast Reconstr Surg 111:2118–2119
Harrison DH, Girling M, Mott G (1981) Experience in monitoring the circulation in free-flap transfers. Plast Reconstr Surg 68:543–555
Ivorra A (2003) Bioimpedance Monitoring for physicians at http://www.cnm.es/∼mtrans/PDFs/Bioimpedance_for_physicians_ rev1.pdf
Kauppinen PK, Hyttinen JAK, Malmivuo JAV (2005) Sensitivity Distribution Simulations of Impedance Tomography Electrode Combinations. Int J Bioelectromagnetism 7(1): 344-347
Harrison DH, Mott G (1989) Impedance monitoring for subcutaneous free flap transfers. Br J Plast Surg 42(3):318-23
Kink A, Min M, Parve T, Rätsep I (2004) Bioimpedance based analysis of tissue oedema, XII ICEBI Proc, Gdansk, 2004, pp 29-32
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© 2007 Springer-Verlag Berlin Heidelberg
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Luoma-aho, H., Kauppinen, P., Suuronen, R. (2007). Sensitivity Distribution Simulations of Electrode Configurations for Monitoring Tissue Grafts. In: Scharfetter, H., Merwa, R. (eds) 13th International Conference on Electrical Bioimpedance and the 8th Conference on Electrical Impedance Tomography. IFMBE Proceedings, vol 17. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-73841-1_13
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DOI: https://doi.org/10.1007/978-3-540-73841-1_13
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-73840-4
Online ISBN: 978-3-540-73841-1
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