Moellhoff, Nicholas and Heidekrueger, Paul I. and Frank, Konstantin and Pistek, Svenja and Alt, Verena and Giunta, Riccardo E. and Ehrl, Denis (2022) Comparing the Time-Dependent Evolution of Microcirculation in Gracilis vs. ALT Flaps Using Laser-Doppler Flowmetry and Tissue-Spectrometry. JOURNAL OF CLINICAL MEDICINE, 11 (9): 2425. ISSN , 2077-0383
Full text not available from this repository. (Request a copy)Abstract
Postoperative free flap monitoring is considered a key component of care after microsurgical reconstruction. To achieve successful flap salvage after surgical revision, early recognition of vascular compromise is required. The aim of this study was to assess and compare the time-dependent evolution of microcirculation in gracilis muscle (GM) and anterolateral thigh (ALT) flaps. This study included continuous measurements of blood flow (flow), hemoglobin oxygenation (SO2) and the relative amount of hemoglobin (rHb) using laser-doppler flowmetry and tissue-spectrometry (O2C, LEA Medizintechnik, Giessen, Germany) over a time-period of 72 h. Microcirculation was assessed in a total of 66 viable free flaps (GM n = 40; ALT n = 26). A statistically significant positive correlation between time post-anastomosis and microvascular flow was found for both GM and ALT flaps with r(s) = 0.384 (p < 0.001) and r(s) = 0.178 (p = 0.015), respectively. No significant positive or negative correlations between time post-anastomosis and SO2 were found for both GM and ALT flaps with r(s) = 0.052 (p = 0.387) and r(s) = -0.018 (p = 0.805), respectively. Overall, a significant negative correlation between time post-anastomosis and rHb was found for GM flaps with r(s) = -0.140 (p = 0.019). For ALT flaps, no significant positive or negative correlation was found with r(s) = -0.011 (p = 0.887). Microcirculation differs in different flap entities, and surgeons should be aware of these differences in order to correctly evaluate and classify the values of flow, SO2 and rHb obtained when using the O2C device for postoperative monitoring.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | FREE-MUSCLE FLAPS; VACUUM-ASSISTED CLOSURE; BLOOD-FLOW; RECONSTRUCTION; DENERVATION; VELOCITY; SURVIVAL; HEAD; NECK; microvascular flow; O2C; anastomosis; free flap; microsurgery |
| 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: | 27 Feb 2024 07:17 |
| Last Modified: | 27 Feb 2024 07:17 |
| URI: | https://pred.uni-regensburg.de/id/eprint/57850 |
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