Relevant clinical practice guidelines for antimicrobial prophylaxis do not currently include a recommendation for use of daptomycin in liver transplant. Rather, a combination of a third-generation cephalosporin plus ampicillin or monotherapy with piperacillin-tazobactam is recommended. Alternatively, ampicillin sulbactam with or without fluconazole may be considered, as well as echinocandin or liposomal amphotericin B in patients at high risk for invasive fungal infection. [1], [2]
A 2019 retrospective, single-center analysis presented at the American Transplant Congress reviewed the incidence and outcomes of VRE infections in LTR with documented VRE colonization who had received perioperative daptomycin prophylaxis. The cohort included 18 adult patients who underwent LT between 2013 and 2017 and were colonized with VRE, as determined through perirectal swab cultures. The institutional protocol provided daptomycin prophylaxis in addition to standard surgical prophylaxis at the time of LT. Multiple clinical and demographic parameters were evaluated, including the Model for End-Stage Liver Disease (MELD) score, Charlson Comorbidity Index, type of biliary anastomosis, the use of induction immunosuppression, post-operative complications, and ICU length of stay. CDC definitions were utilized for infection classification, and outcomes were assessed up to 90 days following transplantation. Among the 18 VRE-colonized LTR receiving daptomycin prophylaxis, the median MELD score was 37, indicating a severely ill population. Most patients (88.9%) underwent duct-to-duct biliary reconstruction, and over 70% required postoperative dialysis. Despite the high prevalence of known risk factors for invasive VRE infection—such as re-operations (33.3%), ICU stays (median 8 days), and serious comorbidities—none of the patients who received daptomycin prophylaxis developed VRE-related infections post-transplant. Only one patient exhibited asymptomatic VRE bacteriuria. Notably, the singular VRE-colonized patient who did not receive daptomycin prophylaxis experienced postoperative hemorrhage, developed VRE bacteremia, and succumbed within 90 days post-LT. These findings suggest that targeted daptomycin prophylaxis in colonized individuals may play a substantial role in mitigating early post-transplant VRE infections, even among a high-risk population. [3]