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85th Annual Meeting of the German Society of Oto-Rhino-Laryngology, Head and Neck Surgery

German Society of Oto-Rhino-Laryngology, Head and Neck Surgery

28.05. - 01.06.2014, Dortmund

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Laser-Doppler study for the comparison of microvascular supply in the peri-implant area with or without soft tissue reduction surgical techniques of bone anchored hearing aid (BAHA) implantation

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  • corresponding author Zsofia Bere - Department of Otorhinolaryngology and Head & Neck, Szeged, Hungary
  • Janos Jarabin - Department of Otorhinolaryngology and Head & Neck Surgery, Szeged, Hungary
  • Petra Hartmann - Department of Experimental Surgery, Szeged, Hungary
  • Laszlo Rovo - Department of Otorhinolaryngology and Head & Neck Surgery, Szeged, Hungary

Deutsche Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie. 85. Jahresversammlung der Deutschen Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie. Dortmund, 28.05.-01.06.2014. Düsseldorf: German Medical Science GMS Publishing House; 2014. Doc14hnod319

doi: 10.3205/14hnod319, urn:nbn:de:0183-14hnod3192

Published: April 14, 2014

© 2014 Bere et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by-nc-nd/3.0/deed.en). You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.

Outline

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Surgical techniques of BAHA implantation rely on skin flap creation and soft tissue reduction (STR), have been successfully used in the last decades. New era of hydroxiapatit coating abutment implanted less radically with soft tissue preservation (STP) might decrease the possible postoperative complication due to preservation of skin microcirculation. Microcirculatory state of the periimplant area characterised after BAHA implantation with STR and STP techniques using laser-Doppler flowmetry (LDF).To test microvascular bed reactivity, local heating provocation test (LHPT) applied.7 patients 13 non-operated retroauricular areas were examined as naive controls, 17 consecutive patients with BAHA surgeries (7 with STR and 10 STP) were recruited (operated and control side). Blood flow in perfusion unit (PU) and percentage flow increase to local heating were calculated.

Baseline blood flow remained stable in all groups (63 to 65 PU). The control naive patients demonstrated more than 700% flow increase in the intact skin. The surgically previously often stressed contralateral side of the BAHA patients proved slightly, but non-significantly lower flow increase (~ 500%) compared to the naive control group to LHPT. The STR side of BAHA patients showed significant lower (~ 217%) flow increase compared to the naive controls and the contralateral sides as well. At the STP sides of the BAHA patients, reduced flow increase to LHTP also indicate maladaptation (~316%), however, STP sides demonstrated a significantly better blood flow improvement compared to the STR sides.

Based on our results, due to preservation of peri-implant area microcirculation reactivity and perfusion, STP technique contributes to faster recovery and less postoperative complication after BAHA implantation.

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