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Updated: Jun 11, 2025
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Outpatient parenteral antimicrobial therapy with carbapenems: A systematic review
Z T Wolie1, J A Roberts2, Y M Wale1
1UQ Centre for Clinical Research, Faculty of Medicine, University of Queensland, Brisbane, QLD 4029, Australia; Department of Pharmacy, College of medicine and health Sciences,Debre Markos University, Debre Markos, Ethiopia.
Objective:
To review the literature on parenteral carbapenems in OPAT and present comprehensive evidence on their safety, efficacy, and stability.
Methods:
A systematic review following PRISMA guidelines was conducted through 17 January 2024, using PubMed, Embase, Web of Science, Scopus, and the Cochrane Library to find relevant articles.
Results:
Ertapenem (1 g QD) in OPAT showed high clinical (81-97%) and microbiological (67-90.9%) success rates. Ertapenem (1 g QD) was also comparable to piperacillin/tazobactam (3.375 g every 6 h) for complicated skin infections and superior to cefazolin (2 g every 8 h) and oxacillin (2 g every 4-6 h) for various infections. Ertapenem monotherapy, once daily, achieved an 81% clinical cure rate for urinary tract infections. Additionally, subcutaneous ertapenem in OPAT showed outcomes comparable to parenteral routes. Meropenem continuous infusion (CI) may also be considered safe and effective in selected patient populations; however, its use in OPAT as a CI is limited due to stability concerns.
Conclusion:
Parenteral carbapenems are effective, and well-tolerated OPAT treatment options; nonetheless, further studies are warranted to optimize the stability and/or dosing regimens of meropenem and enable its wider use.
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