Reducing Duration of Antibiotic Use for Presumed Neonatal Early-Onset Sepsis in Greek NICUs. A "Low-Hanging Fruit" Approach

Antibiotics are commonly prescribed in Neonatal Intensive Care Units (NICU), where stewardship interventions are challenging. Lowering antibiotic consumption is desperately needed in Greece, a country with high antibiotic resistance rates. We sought to assess the effectiveness of a low-cost and -resource intervention to reduce antibiotic use in Greek NICUs implementing a "low-hanging fruit" approach. A prospective quasi-experimental study was conducted in 15/17 public NICUs in Greece (9/2016-06/2019). The intervention selected was discontinuation of antibiotics within 5 days for neonates with gestational age ≥ 37 weeks, no documented signs or symptoms of sepsis, CRP ≤ 10 mg/L and negative cultures within 3 days of antibiotic initiation. Impact was evaluated by the percentage of discontinued regimens by day 5, length of therapy (LOT) and stay. Trends of antibiotic consumption were assessed with days of therapy (DOT) per 1000 patient-days. Overall, there was a 9% increase (p = 0.003) of antibiotic discontinuation in ≤5 days. In total, 7/13 (53.8%) units showed a ≥10% increase. Overall, 615 days on antibiotics per 1000 patients were saved. Interrupted time-series analysis established a declining trend in DOT/1000 patient-days relative to the pre-intervention trend (p = 0.002); a monthly decrease rate of 28.96 DOT/1000 patient-days (p = 0.001, 95%CI [-45.33, -12.60]). The intervention had no impact on antibiotic choice. Antibiotic use was successfully reduced in Greek NICUs using a "low-hanging fruit" approach. In resource-limited settings, similar targeted stewardship interventions can be applied.

Evaluating Clostridioides difficile infection (CDI) treatment duration in hematology/oncology patients receiving concurrent non-CDI antibiotics

PURPOSE

To determine the impact of Clostridioides difficile infection (CDI) treatment duration on CDI recurrence in hematology/oncology patients receiving concurrent non-CDI antibiotics.

PATIENTS AND METHODS

This multi-site, retrospective study examined hematology/oncology patients age ≥18 years hospitalized with active CDI who received ≥1 dose of concurrent non-CDI antibiotics between September 2013 and June 2019. All patients were classified by two definitions for statistical analysis: standard (10-14 days) versus prolonged (>14 days) duration of CDI treatment and non-extended (≤24 hours after stopping non-CDI antibiotics) versus extended (>24 hours after stopping non-CDI antibiotics) CDI treatment. Primary outcome was CDI recurrence within 180 days of completing CDI treatment. Secondary outcomes included hospital length of stay (LOS) as well as mortality and incidence of vancomycin-resistant enterococcus (VRE) infections at 180 days.

RESULTS

Of the 198 patients included, 112 were classified as prolonged versus 86 standard duration and 138 were classified as extended versus 60 non-extended duration. After accounting for demographic differences, no difference existed in the primary outcome of CDI recurrence in either prolonged versus standard or extended versus non-extended analysis (all p > 0.05). Patients who received prolonged versus standard CDI treatment had longer LOS (p < 0.0001) while no difference existed in extended versus non-extended (p > 0.05). No difference in mortality existed in prolonged versus standard (p > 0.05) while those who received extended versus non-extended CDI treatment had significantly lower mortality (p = 0.0008).

CONCLUSIONS

Neither prolonging CDI treatment beyond standard duration nor extending duration beyond end of non-CDI antibiotics was associated with decreased CDI recurrence rate.

Prolonged survival with a longer duration of maintenance lenalidomide after autologous hematopoietic stem cell transplantation for multiple myeloma

BACKGROUND

Although lenalidomide maintenance therapy has demonstrated improved outcomes after autologous hematopoietic stem cell transplantation (auto-HCT) for patients with multiple myeloma (MM), the impact of the duration of this therapy is not clearly known.

METHODS

This study retrospectively analyzed all MM patients who were placed on maintenance lenalidomide after auto-HCT between January 2007 and December 2013. Progression-free survival (PFS) and overall survival (OS) were analyzed in multivariate Cox proportional hazards regression models that included the duration of maintenance as a time-dependent covariate.

RESULTS

Of the 464 patients identified, 46% initiated therapy early (<4 months after auto-HCT). The median PFS and OS were 38 and 78 months, respectively. Improvements in PFS (hazard ratio [HR], 0.13; 95% confidence interval [CI], 0.04-0.38; P < .001) and OS (HR, 0.09; 95% CI, 0.03-0.26; P < .001) were seen for those on maintenance for >2 years versus those on maintenance for ≤2 years. For those on maintenance for >3 versus those on maintenance for ≤3 years, this trend continued with improvements seen in PFS (HR, 0.02; 95% CI, 0.00-0.44; P = .012) and OS (HR, 0.05; 95% CI, 0.00-0.83; P = .037). The incidence of second primary malignancies (SPMs) in the entire cohort was 3%. No differences were seen in survival between early and late initiators of maintenance lenalidomide.

CONCLUSIONS

A longer duration of maintenance therapy was associated with longer survival. The incidence of SPMs was low, and they were not associated with the duration of maintenance. The timing of the initiation of maintenance had no effect on survival. Cancer 2016;122:3831-3837. © 2016 American Cancer Society.