Objective To determine the factors for failure of endoscopic ureteric stenting in patients with malignant ureteric obstruction. Methods We performed a search strategy in the Medical Literature Analysis and Retrieval System Online (MEDLINE), the Excerpta Medica dataBASE (EMBASE), the Literatura Latino‐Americana e do Caribe em Ciências da Saúde database (LILACS), and the Cochrane Central Register of Controlled Trials (CENTRAL) databases. We included patients with malignant ureteric obstruction, who had a JJ catheter insertion. The studies reported the percentage of failure and risk factors, e.g. bladder invasion or deformity of the trigone, hydronephrosis, renal failure, previous radiotherapy, age, obstruction aetiology, and patient’s health status. We performed a meta‐analysis using R software (‘meta’ and ‘metafor’ libraries). Results We included nine studies that met the inclusion criteria, with 761 patients and an average age of 60.5 years. The studies assessed the time to failure during the first 30 days. The reported failure rate was 32% (95% confidence interval [CI] 21–45%; I2 = 88%). Regarding risk factors for failure, bladder invasion or deformity of the trigone had a hazard ratio (HR) of 4.8 (95% CI 1.28–8.5; I2 = 97.4%); severe hydronephrosis had a HR of 3.92 (95% CI 0.32–7.52; I2 = 93.9%); and age <65 years had a HR of 0.93 (95% CI 0.8–0.9; I2 = 0%). Conclusions We found a high probability of failure for endoscopic urinary decompression in patients with malignant ureteric obstruction. Factors such as bladder invasion or deformity of the trigone and age >65 years had an increased risk of failure.

Introduction: The COVID-19 pandemics has caused millions of deaths worldwide, has increased the demand for in-hospital beds and has affected in-hospital activities of "non-respiratory patients." There is currently no known effect of the pandemic on the emergency urological care in our region. This study aims to estimate the first – wave COVID-19 pandemics effect on emergency urological care in four tertiary Colombian hospitals. Material and methods: A cross-sectional retrospective multicenter study were made. The emergency urological care activities between April – May 2019 and April – May 2020 were compared.  We calculated descriptive statistics and assessed differences during the study periods. We used Stata 13.0. Results: 1570 patients were included. There was a 22.20% decrease in the number of patients who visited the emergency room (ER) for urological disease during the pandemic's initial phase. Urolithiasis and urological infectious were the most common reasons for consulting in the ER. there was a significant decrease in ER visits caused by acute urinary retention (p: 0.001). The surgical index for patients who required emergency urological care had a increase of 10.74% (p: 0.0001). There was a decrease of 0.74 days in hospital stay for patients who required urological emergency care in the initial COVID-19 pandemic period. Conclusions:  The COVID-19 pandemic has had a significant impact on emergency and elective urological care worldwide. During the initial phase of this emergency there was a significant decreased in hospital admission due to urological diseases (including acute urinary retention) and average hospital stays due to urological emergencies in Colombia, however, the surgical index for critical urological diseases increased by 10.74%. According to the pandemics dynamics, a greater effect on urological care is expected.