What is known and objective Intravenous to oral (IV‐PO) antibiotic conversion, one of the critical elements in antimicrobial stewardship (AMS), is not well implemented in China. Studies on the strategy to apply the IV‐PO conversion are needed. Our objective was to evaluate the impact and its barriers of a pharmacist‐led practice with computerized reminders on IV‐PO antibiotic conversion for community‐acquired pneumonia (CAP) inpatients. Method This was a retrospective, observational pre‐ and post‐intervention study. Interventions were introduced in 2 sequential 12‐month phases: Phase 1: pharmacists implemented the conventional practice of reviewing patient charts and medication records every 24 h and verbally informed the prescribers on eligible IV‐PO conversions; Phase 2: pharmacists implemented a new intervention practice to inform the prescribers with a computerized reminder in electronic medical record system on eligible IV‐PO conversions. Main outcome measures The primary outcome was the proportion of patients who converted to oral therapy on the day patients were eligible for the conversion. The secondary outcomes were length of IV antibiotic therapy days, total length of antibiotic therapy days and length of hospital stay. Results A total of 524 patients were studied (256 in phase 1 and 268 in phase 2). The proportion of patients who converted to oral therapy on the day patients were eligible for the conversion was significantly increased from 34.77% (89/256) in phase 1 to 62.69% (168/268) in phase 2 (p < 0.05). Length of IV antibiotic therapy days in phase 2 was shortened by 1.23 days, which was 5.52 days compared to 6.75 days in phase 1 (p < 0.05). Total length of antibiotic therapy days was 12.05 days in Phase 1, compared to 10.75 days in phase 2 (p > 0.05). Length of hospital stay for patients in phase 2 was significantly shorter, with a difference of 1.38 days (6.02 days vs. 7.40 days, p < 0.05). The most common barrier of not converting IV‐PO was the presence of co‐morbidity. Conclusion The pharmacist‐led IV‐PO antibiotic conversion practice with computerized reminders was successful and feasible in Chinese hospitals. More IV‐PO intervention studies in patients with other infections are needed in the future.

Background Little evidence exists regarding the prevalence of pathogens in bloodstream infections (BSIs), the mortality risk, and the benefit of combination therapy over monotherapy. This study aims to describe patterns of empiric antimicrobial therapy, and the epidemiology of Gram-negative pathogens, and to investigate the effect of appropriate therapy and appropriate combination therapy on the mortality of patients with BSIs. Methods This was a retrospective cohort study including all patients with BSIs of Gram-negative pathogens from January 2017 to December 2022 in a Chinese general hospital. The in-hospital mortality was compared between appropriate and inappropriate therapy, and between monotherapy and combination therapy for patients receiving appropriate therapy. We used Cox regression analysis to identify factors independently associated with in-hospital mortality. Results We included 205 patients in the study, of whom 147 (71.71%) patients received appropriate therapy compared with 58 (28.29%) who received inappropriate therapy. The most common Gram-negative pathogen was Escherichia coli (37.56%). 131 (63.90%) patients received monotherapy and 74 (36.10%) patients received combination therapy. The in-hospital mortality was significantly lower in patients administered appropriate therapy than inappropriate therapy (16.33% vs. 48.28%, p = 0.004); adjusted hazard ratio [HR] 0.55 [95% CI 0.35–0.84], p = 0.006). In-hospital mortality was also not different in combination therapy and monotherapy in the multivariate Cox regression analyses (adjusted HR 0.42 [95% CI 0.15–1.17], p = 0.096). However, combination therapy was associated with lower mortality than monotherapy in patients with sepsis or septic shock (adjusted HR 0.94 [95% CI 0.86–1.02], p = 0.047). Conclusions Appropriate therapy was associated with a protective effect on mortality among patients with BSIs due to Gram-negative pathogens. Combination therapy was associated with improved survival in patients with sepsis or septic shock. Clinicians need to choose optical empirical antimicrobials to improve survival outcomes in patients with BSIs.

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