Abstract
Background Clostridium difficile infection (CDI) is a major source of morbidity for patients undergoing autologous and allogeneic hematopoietic stem cell transplantation (HSCT). CDI can complicate gastrointestinal mucositis, lead to mucosal barrier infections or sepsis, and compromise nutrition after HSCT. CDI may contribute to acute gastrointestinal graft-versus-host disease (GI aGVHD) and reduce overall survival in allogeneic HSCT patients. Use of enteral vancomycin as CDI prophylaxis may reduce morbidity and improve outcomes in HSCT recipients. Methods As a quality improvement initiative, enteral vancomycin was instituted as CDI prophylaxis in all autologous and allogeneic HSCT recipients at Methodist Children's Hospital beginning 02/13/19. Patients were prescribed vancomycin 125 mg oral/enteral twice daily (Ganetsky et al. Clin Infect Disease 2019; 68 (12):2003-2009) from HSCT admission to discharge home. Patients readmitted during the first 100 days after HSCT resumed enteral vancomycin while hospitalized. Physicians, advanced practice providers, and pharmacists monitored enteral vancomycin administration. The infectious disease and prevention team monitored CDI and weekly vancomycin resistant enterococcus (VRE) stool testing per institutional policy. Pre- and post-implementation data was retrospectively reviewed (number of HSCT patients, CDI, VRE, adverse events of enteral vancomycin, and GI aGVHD). Two-sided Fisher's exact test was used to compare CDI before and after institution of enteral vancomycin prophylaxis. Results Between 01/05/2018 and 02/12/2019, the rate of CDI was 29% (n=9/31). After implementation of CDI prophylaxis (02/13/19 to 09/16/19), the rate of CDI was 0% (n=0/23). Enteral vancomycin resulted in a significant reduction in the number of CDI cases (p=0.0068). Prior to implementation of CDI prophylaxis, 26% (n=7/27) of allogeneic HSCT recipients developed GI aGVHD. Of the 7 patients that developed GI aGVHD, 6 had a history of CDI. After implementation of CDI prophylaxis, 7% (n=1/14) of allogeneic HSCT recipients developed GI aGVHD. There were no VRE positive screens or infections. There were no adverse events related to enteral vancomycin. Conclusions Enteral vancomycin appears to be safe and effective CDI prophylaxis in pediatric, adolescent, and young adult HSCT recipients. Since institution of enteral vancomycin prophylaxis, there has been a significant reduction of CDI in our HSCT patients. This quality improvement project is ongoing and future analyses will compare GI aGVHD and overall survival with CDI pre- and post-implementation of enteral vancomycin prophylaxis.
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