Treatment of Acute Gout Flares in the Emergency Department: Prescribing Patterns and Revisit Rates.

BACKGROUND: The incidence and health care costs of gout flares have increased in the United States. The increased costs may be a result of a lack of adherence to treatment guidelines and medication knowledge. Identifying causes for this trend is vital to mitigate inappropriate resource use. OBJECTIVES: The aim was to identify pharmacotherapy use related to gout treatment before, during hospital visit or stay, and on discharge in patients presenting to the emergency department (ED) with gout flares. Secondary end points included opioid use, revisit rates, and associated risk factors. METHODS: We performed a retrospective cohort study at a community teaching hospital ED. All consecutive patients visiting the ED from January 2016 to July 2019 with a primary diagnosis of gout flare were included. Data were extracted from the electronic medical records. RESULTS: The analysis included 214 patients. Anti-inflammatory medication was not prescribed in 33.6% during the hospital visit and 29.6% of patients on discharge. History of opioid use (odds ratio [OR] = 3.3; 95% CI = 1.3-8.6; P = 0.014) and gastroesophageal reflux disease (OR = 3.5; 95% CI = 1.09-10.9; P = 0.035) were associated with opioid prescription on discharge. ED revisits within 90 days for any gout-related or non-gout-related cause were recorded in 16.8% of patients. CONCLUSION AND RELEVANCE: Roughly 30% of patients did not receive an anti-inflammatory on discharge, and opioids were frequently overused in gout management in the ED. There is an opportunity for further education of health care providers regarding gout treatment.

Vancomycin area under the curve versus trough only guided dosing and the risk of acute kidney injury: Systematic review and meta-analysis.

Vancomycin is commonly used to treat methicillin-resistant Staphylococcus aureus infections and is known to cause nephrotoxicity. Previous Vancomycin Consensus Guidelines recommended targeting trough concentrations but the 2020 Guidelines suggest monitoring vancomycin area under the curve (AUC) given the reduced risk of acute kidney injury (AKI) at similar levels of efficacy. This meta-analysis compares vancomycin-induced AKI incidence using AUC-guided dosing strategies versus trough-based monitoring. Literature was queried from Medline (Ovid), Web of Science, and Google Scholar from database inception through November 5, 2021. Interventional or observational studies reporting the incidence of vancomycin-induced AKI between AUC- and trough-guided dosing strategies were included. In the primary analysis, the Vancomycin Consensus Guidelines definition for AKI was used if reported; otherwise, the Risk, Injury, and Failure; and Loss, and End-stage kidney disease (RIFLE) or Kidney Disease Improving Global Outcomes (KDIGO) definitions were used. The incidence of nephrotoxicity was evaluated between the two strategies using a Mantel-Haenszel random-effects model, and odds ratios (ORs) and 95% confidence intervals (CIs) were calculated. Subgroup analyses for adjusted ORs and AKI definitions were performed. Heterogeneity was identified using Cochrane's Q test and I2 statistics. A total of 10 studies with 4231 patients were included. AUC-guided dosing strategies were associated with significantly less vancomycin-induced AKI than trough-guided strategies [OR 0.625, 95% CI (0.469-0.834), p = 0.001; I2  = 25.476]. A subgroup analysis of three studies reporting adjusted ORs yielded similar results [OR 0.475, 95% CI (0.261-0.863), p = 0.015]. Stratification by AKI definition showed a significant reduction in AKI with the Vancomycin Consensus Guidelines definition [OR 0.552, 95% CI (0.341-0.894), p = 0.016] but failed to find significance in the alternative definitions. Area under the curve-guided dosing strategies are associated with a lower incidence of vancomycin-induced AKI versus trough-guided dosing strategies (GRADE, low). Limitations included the variety of AKI definitions and the potential for confounding bias.