Abstract
Purpose
The goal of this pharmacokinetic (PK) study was to evaluate whether a single 2-g prophylactic dose of cefazolin given (IV) bolus provides effective protective cefazolin levels for prophylaxis against methicillin-sensitive S. aureus (MSSA), the primary skin pathogen in bariatric surgery.
Materials and Methods
Thirty-seven patients having gastric bypass or sleeve gastrectomy received cefazolin 2-g preoperative prophylaxis. Serum, subcutaneous adipose tissue, and deep peri-gastric adipose tissue specimens were collected at incision and before skin closure. Cefazolin concentrations in serum and adipose tissue were determined by high-performance liquid chromatography.
Results
Penetration of cefazolin, a water soluble antibiotic, into adipose tissue was only 6–8 % of simultaneous serum levels. However, cefazolin tissue concentrations in all adipose tissue specimens, exceeded mean MIC for MSSA.
Conclusions
Prophylactic cefazolin, given as a single 2 g (IV bolus 3–5 min before skin incision) was more than adequate in providing protective cefazolin levels for the duration of bariatric surgery. Cefazolin 2 g (IV dose bolus given just before skin incision) achieves protective adipose tissue levels (> MIC of MSSA) for the duration (usually < 4 h) of bariatric surgical procedures. In this study, cefazolin 2 g (IV bolus) provided protective adipose tissue levels for 4.8 h. Since cefazolin is a water soluble antibiotic (V d = 0.2 L/Kg), penetration into adipose tissue is not V d not dose-dependent. Extremely high-dosed cefazolin, i.e., 3 or 4 g is excessive and unnecessary for bariatric surgery prophylaxis. A single cefazolin 2 g preoperative dose also eliminates the need for intraoperative redosing at 4 h.
Similar content being viewed by others
References
Christou N, Jarand J, Sylvestre J, et al. Analysis of the incidence and risk factors for wound infections in open bariatric surgery. Obes Surg. 2004;14:16–2.
Bratzler D, Dellinger EP, Olsen K, et al. Clinical practice guidelines for antimicrobial prophylaxis in surgery. Am J Health Syst Pharm. 2013;70:195–83.
Quintilliani R, Nightingale CH. Cefazolin. Ann Intern Med. 1978;89:650–6.
Grayson ML, Crow SM, McCarthy JS, et al. In: Grayson ML editor. Kucer’s the use of antibiotics: a clinical review of antibacterial, antifungal and antiviral drugs. (6th ed.) Hoddder Arnold: London; 2010. p. 257–74.
Cunha BA, editor. Antibiotic essentials. 14th ed. New Delhi: Jaypee Brothers Medical Publishers; 2015. p. 557–9.
Janson B, Thursky K. Dosing of antibiotics in obesity. Curr Opin Infect Dis. 2012;25:634–49.
Ho V, Nicolau D, Dakin GF, et al. Cefazolin dosing for surgical prophylaxis in morbidly obese patients. Surg Infect. 2012;13:33–7.
van Kralingen S, Taks M, Diepstraten J, et al. Pharmacokinetics and protein binding of cefazolin in morbidly obese patients. Eur J Clin Pharmacol. 2011;67:985–92.
Shabanzedeh DM, Sorensen LT. Laparoscopic surgery compared with open surgery decreases surgical site infection in obese patients: a systematic review and meta-analysis. Ann Surg. 2012;256:934–45.
Fischer M, Dias C, Stein A, et al. Antibiotic prophylaxis in obese patients submitted to bariatric surgery. A systematic review. Acta Cir Bra. 2014;9:209–7.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of Interest
All authors declare no conflict of interest in publication of this manuscript.
Informed Consent
For this type of study, formal consent is not required.
Rights and permissions
About this article
Cite this article
Chen, X., Brathwaite, C.E.M., Barkan, A. et al. Optimal Cefazolin Prophylactic Dosing for Bariatric Surgery: No Need for Higher Doses or Intraoperative Redosing. OBES SURG 27, 626–629 (2017). https://doi.org/10.1007/s11695-016-2331-9
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11695-016-2331-9