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(565) Implementation of a Staphylococcus aureus screening and decolonization program in a multisite urban healthcare system


Authors:

Tamara King-Morrieson, RN – Clinical Nurse Specialist, NYU Langone Health

Anna Stachel, MPH – Assistant Director, Infection Prevention and Control, NYU Langone Health

Michael Phillips, MD – Chief Hospital Epidemiologist, Associate Professor of Medicine, NYU Health System and NYU School of Medicine

Maria Aguero-Rosenfeld, MD – Professor, Department of Pathology, Professor, Department of Medicine, New York University

Kenneth Inglima – Microbiology lab manager, NYU Langone Health

Sarah Hochman, MD – Assistant Professor, Department of Medicine Section Chief, Infectious Diseases, Tisch Hospital, NYU School of Medicine


Co-Authors:

Co-Author: Tamara King-Morrieson, RN – Clinical Nurse Specialist, NYU Langone Health
Co-Author: Anna Stachel, MPH – Assistant Director, Infection Prevention and Control, NYU Langone Health
Co-Author: Michael Phillips, MD – Chief Hospital Epidemiologist, Associate Professor of Medicine, NYU Health System and NYU School of Medicine
Co-Author: Maria Aguero-Rosenfeld, MD – Professor, Department of Pathology, Professor, Department of Medicine, New York University
Co-Author: Kenneth Inglima – Microbiology lab manager, NYU Langone Health
Presenting Author: Sarah Hochman, MD – Assistant Professor, Department of Medicine Section Chief, Infectious Diseases, Tisch Hospital, NYU School of Medicine

Abstract:

Background :

Staphylococcus aureus infection confers high mortality. S. aureus-colonized hospitalized patients are more likely to develop invasive infection and can transmit S. aureus to other patients in the absence of symptoms. Our health system has a baseline S. aureus colonization rate of 21% (MSSA and MRSA combined). To reduce risk of invasive S. aureus infection in our patients, we implemented an inpatient S. aureus screening and decolonization program.


Methods :

Interventions include universal S. aureus screening and targeted decolonization for all patients on the Medicine and Pediatrics inpatient services. Adult patients are screened at admission and change in level of care; pediatric patients are screened weekly. S. aureus screening began incrementally by unit between 2016 and 2017, and extended to transplant units in 2018. All cultures are processed in the hospital microbiology lab for identification of MRSA and MSSA. S. aureus decolonization (mupirocin ointment in nares twice daily, chlorhexidine 2% wipes below the chin daily for 5 days) began in 2017 for patients with central venous catheter, in intensive care unit or multibedded room. Decolonization was extended to all S. aureus-colonized patients beginning in June 2018, with involvement of a dedicated clinical nurse specialist. We compared compliance with screening and decolonization and the secondary outcome of MRSA bacteremia in the 6 month period before and after addition of the clinical nurse specialist.


Results :

21.5% of screened patients were colonized with S. aureus (82.4% MSSA, 17.6% MRSA). Screening complaince improved from 39.4% of eligible patients (N=1805) to 52.1% (N=2024) and decolonization increased from 18.6% of colonized patients to 41.2% comparing January-June 2018 with July-December 2018. The MRSA bacteremia rate fell from 0.2/1000 patient days in the first half of 2018 to 0.1/1000 patient days in the second half of 2018. 


Conclusion :

A system-wide program that includes S. aureus screening and decolonization of hospitalized patients found that 21% of patients had S. aureus colonization. Screening and decolonization compliance increased with introduction of a dedicated clinical nurse specialist, and the MRSA bloodstream infection rate fell.





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