RESUMO
BACKGROUND: Given the pathophysiology of hypoxemia in patients with Covid-19 acute respiratory failure (ARF), it seemed necessary to evaluate whether ROX index (ratio SpO2/FiO2 to respiratory rate) could accurately predict intubation or death in these patients initially treated by high-flow nasal oxygenation (HFNO). We aimed, therefore, to assess the accuracy of ROX index to discriminate between HFNO failure (sensitivity) and HFNO success (specificity). METHODS: We designed a multicentre retrospective cohort study including consecutive patients with Covid-19 ARF. In addition to its accuracy, we assessed the usefulness of ROX index to predict HFNO failure (intubation or death) via logistic regression. RESULTS: Among 218 ARF patients screened, 99 were first treated with HFNO, including 49 HFNO failures (46 intubations, 3 deaths before intubation). At HFNO initiation (H0), ROX index sensitivity was 63% (95%CI 48-77%) and specificity 76% (95%CI 62-87%) using Youden's index. With 4.88 as ROX index cut-off at H12, sensitivity was 29% (95%CI 14-48%) and specificity 90% (95%CI 78-97%). Youden's index yielded 8.73 as ROX index cut-off at H12, with 87% sensitivity (95%CI 70-96%) and 45% specificity (95%CI 31-60%). ROX index at H0 was associated with HFNO failure (p = 0.0005) in univariate analysis. Multivariate analysis showed that SAPS II (p = 0.0003) and radiographic extension of pulmonary injuries (p = 0.0263), rather than ROX index, were predictive of HFNO failure. CONCLUSIONS: ROX index cut-off values seem population-specific and the ROX index appears to have a technically acceptable but clinically low capability to discriminate between HFNO failures and successes in Covid-19 ARF patients. In addition, SAPS II and pulmonary injuries at ICU admission appear more useful than ROX index to predict the risk of intubation.
RESUMO
Purpose: Post-prostatectomy incontinence remains a problem, even in minor or moderate degrees. In order to minimize surgical morbidity and costs, sling procedures have been proposed. The authors have developed a new transobturator male sling procedure and report their results after one-year experience. Materials and methods: A prospective multicenter study was conducted in 50 patients with minor or moderate post-prostatectomy incontinence. Evaluation of TOMS two arms bulbar sling was based on clinical form assessment, The International Consultation on Incontinence Questionnaire (ICIQ) and short-form (SF) 36 questionnaire pre and postoperatively and at 3, 6, 9 and 12 months. Results: The surgical procedure was considered easy to perform and no post-surgery complication was reported except for one retention. The median number of pads per day decreased significantly from 2 pads before surgery (95 percent CI: 2 - 3) to 1 during the follow-up period (95 percent CI: 0 - 2 at 360 days), and at 3 months patients using none or one pad per day were 30 percent and 32 percent respectively. The SF 36 continence and quality of life score improved from a median of 100 (95 percent CI: 83 - 133) to 300 (95 percent CI: 167 - 375), and the median ICIQ incontinence and quality of life score decreased from 15 (95 percent CI: 14 - 16) to 8 (95 percent CI: 5 - 12) one year after surgery. Conclusion: The transobturator perineal male sling TOMS is an attractive simple sling technique for moderate or minor post-prostatectomy stress incontinence and offers an improvement in the quality of life.