#83 – Dosing Consult: Sulfamethoxazole/trimethoprim
Breakpoints
The Role of Bacteria in the Treatment of MRSA
We will tackle pneumocystis first, and then we'll talk about treatment dosing. All of our data for how to dose back-term for this comes from the early 90s. I'd rather have no data and live in a world where HIV is a manageable disease any day. And taking a shot at vancomycin. So man, if you can't even, like you said, go toe to toe with vancomycus. Should we be doing it before we transition to the next pathogen?
Episode Notes
In what has been described on Twitter as the “doing your own taxes of medicine,” Drs. Emily Heil (@emilylheil) and Andrew Fratoni (@AFratty) join Dr. Jillian Hayes (@thejillianhayes) to break down the ins and outs of sulfamethoxazole/trimethoprim dosing! Tune in for a discussion on the use of this agent for methicillin-resistant Staphylococcus aureus, gram-negatives, pneumocystis, and Stenotrophomonas maltophilia.
References:
- Twitter Thread re: Bactrim dosing: https://twitter.com/IDdocAdi/status/1661174505702674432?s=20
- PJP OI Guidelines: https://clinicalinfo.hiv.gov/en/guidelines/hiv-clinical-guidelines-adult-and-adolescent-opportunistic-infections/pneumocystis-0
- IDSA Resistant Gram Negative Guidance Document: https://www.idsociety.org/globalassets/idsa/practice-guidelines/amr-guidance/1.0/idsa-amr-guidance-v3.0.pdf
- (Lower doses of PJP Treatment): Butler-Laporte G, Smyth E, Amar-Zifkin A, Cheng M, McDonald E, Lee T. Low-dose TMP-SMX in the Treatment of Pneumocystis jirovecii Pneumonia: A Systematic Review and Meta-Analysis. Open Forum Infectious Diseases, Volume 7, Issue 5, May 2020, ofaa112, https://doi-org.proxy-hs.researchport.umd.edu/10.1093/ofid/ofaa112
- (DS Vs SS for PJP PPX): Schneider MM, Nielsen TL, Nelsing S, et al. Efficacy and toxicity of two doses of trimethoprim-sulfamethoxazole as primary prophylaxis against Pneumocystis carinii pneumonia in patients with human immunodeficiency virus. Dutch AIDS Treatment Group. J Infect Dis. 1995;171(6):1632-1636. Available at: http://www.ncbi.nlm.nih.gov/pubmed/7769306.
- General Bactrim PK/PD: Trubiano JA, Grayson ML. Trimethoprim and Trimethoprim-Sulfamethoxazole (Cotrimoxazole). Chapter 92, Kucers’ The Use of Antibiotics (7th Edition). Taylor & Francis, 2017.
- (2014 IDSA SSTI Guidelines). PMID 24973422
- Cadena J, Nair S, Henao-Martinez AF, Jorgensen JH, Patterson JE, Sreeramoju PV. Dose of trimethoprim-sulfamethoxazole to treat skin and skin structure infections caused by methicillin-resistant Staphylococcus aureus. Antimicrob Agents Chemother. 2011 Dec;55(12):5430-2. doi: 10.1128/AAC.00706-11. Epub 2011 Sep 19. PMID: 21930870; PMCID: PMC3232808.
- Halilovic J, Heintz BH, Brown J. Risk factors for clinical failure in patients hospitalized with cellulitis and cutaneous abscess. J Infect. 2012 Aug;65(2):128-34. doi: 10.1016/j.jinf.2012.03.013. Epub 2012 Mar 21. PMID: 22445732.
- Paul M, Bishara J, Yahav D, Goldberg E, Neuberger A, Ghanem-Zoubi N, Dickstein Y, Nseir W, Dan M, Leibovici L. Trimethoprim-sulfamethoxazole versus vancomycin for severe infections caused by meticillin resistant Staphylococcus aureus: randomised controlled trial. BMJ. 2015 May 14;350:h2219. doi: 10.1136/bmj.h2219. PMID: 25977146; PMCID: PMC4431679.
- Lasko MJ, Gethers ML, Tabor-Rennie JL, Nicolau DP, Kuti JL. In Vitro Time-Kill Studies of Trimethoprim/Sulfamethoxazole against Stenotrophomonas maltophilia versus Escherichia coli Using Cation-Adjusted Mueller-Hinton Broth and ISO-Sensitest Broth. Antimicrob Agents Chemother. 2022 Mar 15;66(3):e0216721. doi: 10.1128/aac.02167-21. Epub 2022 Jan 10. PMID: 35007135; PMCID: PMC8923228.
- Lasko MJ, Tabor-Rennie JL, Nicolau DP, Kuti JL. Trimethoprim/sulfamethoxazole pharmacodynamics against Stenotrophomonas maltophilia in the in vitro chemostat model. J Antimicrob Chemother. 2022 Oct 28;77(11):3187-3193. doi: 10.1093/jac/dkac304. PMID: 36101486.
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