Bundle in the bronx: Impact of a transition-of-care outpatient parenteral antibiotic therapy bundle on all- cause 30-day hospital readmissions

Theresa Madaline, Priya Nori, Wenzhu Mowrey, Elisabeth Zukowski, Shruti Gohil, Uzma Sarwar, Gregory Weston, Riganni Urrely, Matthew Palombelli, Vinnie Frank Pierino, Vanessa Parsons, Amy Ehrlich, Belinda Ostrowsky, Marilou Corpuz, Liise Anne Pirofski

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


Background. A streamlined transition from inpatient to outpatient care can decrease 30-day readmissions. Outpatient parenteral antibiotic therapy (OPAT) programs have not reduced readmissions; an OPAT bundle has been suggested to improve outcomes. We implemented a transition-of-care (TOC) OPAT bundle and assessed the effects on all-cause, 30-day hospital readmission. Methods. Retrospectively, patients receiving postdischarge intravenous antibiotics were evaluated before and after implementation of a TOC-OPAT program in Bronx, New York, between July, 2015 and February, 2016. Pearson's Χ2 test was used to compare 30-day readmissions between groups, and logistic regression was used to adjust for covariates. Time from discharge to readmission was analyzed to assess readmission risk, using log-rank test to compare survival curves and Cox proportional hazards model to adjust for covariates. Secondary outcomes, 30-day emergency department (ED) visits, and mortality were analyzed similarly. Results. Compared with previous standard care (n = 184), the TOC-OPAT group (n = 146) had significantly lower 30-day readmissions before (13.0% vs 26.1%, P < .01) and after adjustment for covariates (odds ratio [OR] = 0.51; 95% confidence interval [CI], 0.27-0.94; P = .03). In time-dependent analyses, TOC-OPAT patients were at significantly lower risk for readmission (log-rank test, P < .01; hazard ratio = 0.56; 95% CI, 0.32-0.97; P = .04). Propensity-matched sensitivity analysis showed lower readmissions in the TOC-OPAT group (13.6% vs 24.6%, P = .04), which was attenuated after adjustment (OR = 0.51; 95% CI, 0.25-1.05; P = .07). Mortality and ED visits were similar in both groups. Conclusions. Our TOC-OPAT patients had reduced 30-day readmissions compared with the previous standard of care. An effective TOC-OPAT bundle can successfully improve patient outcomes in an economically disadvantaged area.

Original languageEnglish (US)
Article numberofx097
JournalOpen Forum Infectious Diseases
Issue number2
StatePublished - Mar 1 2017


  • Bundle
  • Outpatient parenteral antibiotic therapy
  • Readmission
  • Transitional care model

ASJC Scopus subject areas

  • Infectious Diseases
  • Oncology


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