Ten-year experience of transbronchial endosonography in single center

Objective Transbronchial endosonography (EBUS) is a relatively new method for diagnosing of the pathological condition of the thoracic organs. Analysis of 10 years of our experience in the use of transbronchial endosonography in a specialized center.Material and Methods During the period from April 2010 to April 2020, 756 transbronchial endosonographies were conducted on 756 patients. The studies were carried out for various indications: 1) Group 1 (483) – transbronchial puncture of the lymph nodes in order to obtain morphological confirmation of the etiology; 2) Group 2 (260) – staging of suspected or verified lung cancer to determine the descriptor N; 3) Group 3 (13) – a study that ended only with obtaining an endosonographic image. All patients underwent transbronchial endosonography using the special ultrasound bronchoscope EB-1970UK (Pentax Corp.) and the ultrasound scanner EUB 5000 Plus G OB/GYN – Vascular Ultrasound (HITACHI Corp.).Results General information content was 78%; verification of mediastinal lymphadenopathy was 72% (57, 79, 58% for smears, cytoblocks and smears + cytoblocks, cytoblocks vs smears + cytoblocks, p < 0.05). Verification of local changes in the mediastinum – 66%; verification of peribronchial tumor – 87%. Lung cancer staging – 87% (82, 88, 86% for smears, cytoblocks vs smears + cytoblocks, respectively, р > 0.05)Conclusion Тhe diagnostic utility of EBUS for the verification of mediastinal lymphadenopathy can range from 37,5 to 83% and rise with increasing experience for all persons involved. The use of cytoblocks showed the best results. The diagnostic utility of staging varies from 60 to 100% and does not depend on the method of processing the aspiration material

Ozone loss from quasi-conservative coordinate mapping during the 1999-2000 SOLVE/THESEO 2000 campaigns

Ozone observations made by the Airborne Raman Ozone, Temperature, and Aerosol Lidar(AROTEL) and Differential Absorption Lidar (DIAL) on board the NASA DC-8 aircraft, the NOAAin situ instrument on board the NASA ER-2 aircraft, and Third European Stratospheric Experimenton Ozone 2000 (THESEO 2000) ozonesondes are analyzed by applying a quasi-conservativecoordinate mapping technique. Measurements from the late winter/early spring SAGE III OzoneLoss and Validation Experiment (SOLVE) period (January through March 2000) are incorporatedinto a time-varying composite field in a potential vorticity-potential temperature coordinate space;ozone loss rates are calculated both with and without diabatic effects. The average loss rate frommid-January to mid-March near the 450 K isentropic surface in the polar vortex is found to beapproximately 0.03 ppmv/d

Non-coincident inter-instrument comparisons of ozone measurements using quasi-conservative coordinates

Ozone measurements from ozonesondes, AROTAL, DIAL, and POAM III instruments during the SOLVE-2/VINTERSOL period are composited in a time-varying, flow-following quasi-conservative (PV-θ) coordinate space; the resulting composites from each instrument are mapped onto the other instruments' locations and times. The mapped data are then used to intercompare data from the different instruments. Overall, the four ozone data sets are found to be in good agreement. AROTAL shows somewhat lower values below 16 km, and DIAL has a positive bias at the upper limits of its altitude range. These intercomparisons are consistent with those obtained from more conventional near-coincident profiles, where available. Although the PV-θ mapping technique entails larger uncertainties of individual profile differences compared to direct near-coincident comparisons, the ability to include much larger numbers of comparisons can make this technique advantageous

Vortex-averaged Arctic ozone depletion in the winter 2002/2003

A total ozone depletion of 68±7 Dobson units between 380 and 525K from 10 December 2002 to 10 March 2003 is derived from ozone sonde data by the vortex-average method, taking into account both diabatic descent of the air masses and transport of air into the vortex. When the vortex is divided into three equal-area regions, the results are 85±9DU for the collar region (closest to the edge), 52±5DU for the vortex centre and 68±7DU for the middle region in between centre and collar.Our results compare well with other studies: We find good agreement with ozone loss deduced from SAOZ data, with results inferred from POAM III observations and with results from tracer-tracer correlations using HF as the long-lived tracer. We find a higher ozone loss than that deduced by tracer-tracer correlations using CH4.We have made a careful comparison with Match results: The results were recalculated using a common time period, vortex edge definition and height interval. The two methods generally compare very well, except at the 475K level which exhibits an unexplained discrepancy

Aspects of urinary tract infections and antimicrobial resistance in hospitalized urology patients in Asia: 10-Year results of the Global Prevalence Study of Infections in Urology (GPIU)

10.1016/j.jiac.2017.11.013Journal of Infection and Chemotherapy244278-283JICH