The use of peer support groups for emergency physicians during the COVID-19 pandemic.

Objective: To test the feasibility, receptivity, and preliminary effectiveness of peer support groups for emergency medicine physicians during the COVID-19 pandemic and gain a better understanding of their experiences with peer support. Methods: This pilot study used a quasi-experimental design to assess change in symptoms of distress, anxiety, depression and burn-out before and after participating in a virtual, group-based peer support intervention for a duration of 8 weeks. Pre-post change analyses were performed using two-sided, paired t tests. Feasibility was measured by attendance data to demonstrate the use of the intervention. Receptivity was measured using a global change rating and net promoter score at the end of each session and 8-week period, respectively. During the final session, qualitative data on physician experience was collected and then analyzed using conventional content analysis. Results: Twenty-four emergency medicine physicians participated in the pilot study. The attendance goal was met by 20 (24, 83%) physicians and 19 (22, 86%) physicians reported they would recommend peer support groups to a friend of colleague. Positive standardized response mean effect sizes indicated modest improvement in nine of 12 symptom measurements with marginal significance (p < 0.10) for improvement in guilt [20, Effect Size (ES) = 0.45] and depression (21, ES = 0.39). Qualitative findings revealed high overall benefit with few adverse impacts of participation. Conclusions: Results demonstrate high physician receptivity, feasibility, and benefit from participation in peer support groups. Promising signs of improvement in distress, anxiety, depression, and burn out symptoms warrant additional studies with larger sample sizes and more robust research designs to establish the evidence base for peer support in the physician population.

Activity of imipenem/relebactam against carbapenemase-producing Enterobacteriaceae with high colistin resistance.

OBJECTIVES: Imipenem/relebactam, an investigational ß-lactam/ß-lactamase inhibitor combination for treatment of Gram-negative infections, and comparators including ceftazidime/avibactam, piperacillin/tazobactam and colistin were tested for activity against representative carbapenemase-producing Enterobacteriaceae (CPE) isolates. METHODS: MICs of the antimicrobial agents were determined using standard broth microdilution methodology for CPE isolates collected from Indiana patients, primarily during the time frame of 2013-17 (n = 199 of a total of 200 isolates). Inhibitors were tested at 4 mg/L in all combinations. RESULTS: Of the CPE in the study, 199 produced plasmid-encoded KPC class A carbapenemases; 1 Serratia marcescens isolate produced the SME-1 chromosomal class A carbapenemase. MIC50/MIC90 values of imipenem/relebactam were ≤0.25/0.5 mg/L, whereas MIC50/MIC90 values of ceftazidime/avibactam were 1/2 mg/L. Resistance to colistin was observed in 54% (n = 97) of 180 non-Serratia isolates tested (MIC50 of 4 mg/L). Colistin resistance mechanisms included production of a plasmid-encoded mcr-1-like gene (n = 2) or an inactivated mgrB gene. CONCLUSIONS: Imipenem/relebactam was the most potent agent tested against CPE in this study and may be a useful addition to the antimicrobial armamentarium to treat infections caused by these pathogens.