КОМПЛЕКСНАЯ ЭНДОСКОПИЧЕСКАЯ ДИАГНОСТИКА РАННИХ РЕЦИДИВОВ У БОЛЬНЫХ, ОПЕРИРОВАННЫХ ПО ПОВОДУ РАКА ЛЕГКОГО

The purpose of the study: to evaluate the effectiveness of postoperative management of the bronchial stump in lung cancer patients. material and methods. Forty-four patients with stage III lung cancer underwent endoscopic examination of the bronchial tree 3, 6, 9 and 12 months after surgery. The EVIS EXERAII and LUCERA videoendoscopic complexes with consistent use of white light mode, autofluorescence and narrow- spectrum mode were used. Endoscopic results were compared with morphological findings. Results. X-ray of the chest was negative for tumor recurrence in 3 (6.8 %) cases and early metachronous tumor of the trachea was revealed in 1 (2.3 %) case. The main endoscopic symptoms of early local recurrence in the bronchial stump were the marked lilac glow identified in the AFI mode and the mucosal vascular pattern deformation Timely diagnosis of recurrence allows a special treatment to be performed.Цель исследования - оценка эффективности комплексного послеоперационного мониторинга состояния культи оперированного бронха у больных раком легкого. Материал и методы. У 44 больных, оперированных по поводу рака легкого III стадии, в сроки через 3, 6, 9 и 12 мес после лечения проводилось комплексное эндоскопическое исследование бронхиального дерева на видеоэндоскопических комплексах EVIS EXERAII и LUCERA с последовательным использованием режима белого света, аутофлуоресценции и режима узкого спектра. Результаты эндоскопии сопоставляли с данными морфологического исследования. результаты. В 3 (6,8 %) случаях на различных этапах послеоперационного мониторинга были обнаружены рентгенонегативные рецидивы опухоли, в 1 (2,3 %) - ранняя метахронная опухоль трахеи. Основными эндоскопическими симптомами ранних местных рецидивов в культе оперированного бронха являются выраженное сиреневое свечение, выявляемое в режиме AFI, и различная деформация сосудистого рисунка слизистой оболочки. Своевременная диагностика рецидивного процесса позволяет провести специальное лечени

Reproducibility of the multiple inert gas elimination technique

Although measurement errors in the multiple inert gas elimination technique have a coefficient of variation of approximately 3%, small biological fluctuations in ventilation, blood flow, or other variables must contribute additional variance to this method of assessing ventilation-perfusion (VA/Q) mismatch. To determine overall variance of computed indices of VA/Q mismatch, an analysis of variance was carried out using a total of 400 duplicate pairs of inert gas samples obtained from canine (N = 118) and human (N = 282) studies in the past 2 years. In both sets VA/Q mismatch ranged from minimal (2nd moment of ventilation and blood flow distributions, log SDV and log SDQ, respectively approximately equal to 0.3 each) to severe (log SDV and log SDQ approximately equal to 2.0). Differences between duplicate log SD values were computed and found to be a constant fraction of the mean log SD of each duplicate pair, averaging 13% for both canine and human ventilation and blood flow data. The resultant coefficient of variation for a single measurement of log SD about its mean averaged 8.6% for all data combined. This analysis demonstrates excellent reproducibility of these dispersion indices over a wide range of conditions, and if the mean of duplicate values is used, thus reducing variability by square root 2 to 6.1%, log SD can be estimated with an approximately 95% confidence limit of +/- 12%. </jats:p