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Transoral endoscopic thyroidectomy vestibular approach (TOETVA) is an upcoming surgical technique with the aim to optimize cosmetic outcome avoiding visible scars in the neck. However, the transoral access bears the risk of contamination and microbial allocation from the mouth into the thyroid region. Therefore, some authors recommend extended antibiotic therapy up to 7 days after surgery. Our aim was to evaluate infection rates and parameters before and after transoral surgery and to suggest a viable and safe routine in transoral surgery. Prospectively collected data of patients who were eligible for transoral surgery in Austria and Germany between June 2017 and July 2020 were retrospectively evaluated focussing on clinical and laboratory infection signs pre and postoperatively. White blood cell count (WBC) and C-reactive protein levels (CRP) were estimated before and after surgery. Patients` characteristics, surgical outcome and complications were also determined and compared to the current results reported in the literature. 113 transoral operations were performed in 108 patients. In 37 of 108 (36%) patients an additional retroauricular incision in the hairline and in two patients a submental skin incision was performed to extract thyroid specimen of more than 40 ml. Intravenous antibiotic prophylaxis and enoral mucosal disinfection were used in all patients before surgery. WBC and CRP levels were available in 75 patients. Median WBC was 5800/µl (range 3500–10,500/µl) before and significantly higher (median 8900/µl, range 4500–18,800 µl; p

The database application system is developed to improve the selection of aerosol parameters for radiation transport calculations. The user has to choose location and time for his simulation calculations. The system presents proposals for the height dependence of optical properties of aerosols as graphics. Depending on the user requirements ofthe simulation calculations the user may manipulate the data content (e. g. variation of the mixing ratio, number of aerosol components, humidity, height distribution, wavelength range). As one option the output of the database system can be immediately used for MODTRAN calculations.

A database application system was developed to provide aerosol parameters for radiative transfer calculations. The system is based on the aerosol model of d'Almeida (1991) and is directed in its first step to maritime applications. The user can choose location and time for his radiative transfer calculations. The system offers proposals as tables and curves for optical aerosol parameters and aerosol height distributions. Depending on the user requirements the data (e.g. mixing ratio, height distribution) can be modified.© (1994) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.