Gafter-Gvili, A., Paul, M., Fraser, A., & Leibovici, L. (2007). Effect of quinolone prophylaxis in afebrile neutropenic patients on microbial resistance: Systematic review and meta-analysis. Journal of Antimicrobial Chemotherapy, 59, 522.
To compare antibiotic prophylaxis with placebo or no intervention or another antibiotic in patients with afebrile neutropenia
DATABASES USED: Cochrane Cancer Network Register of Trials (December 2004), Cochrane Library (Issue 4, 2004), EMBASE (January 1980–December 2004), and MEDLINE (January 1966–December 2004); the reference lists of all the articles also were searched.
FINAL NUMBER STUDIES INCLUDED = 95 RCTs
TOTAL PATIENTS INCLUDED IN REVIEW = 9,283 patients comparing prophylactic antibiotics with placebo, no intervention, or other prophylactic antibiotics
KEY SAMPLE CHARACTERISTICS: Sixty-four trials included only patients with hematologic malignancies, and nine trials consisted of more than 80% of patients with solid tumors. Twenty-seven studies included patients undergoing bone marrow transplantation (BMT).
Prophylactic antibiotics significantly decreased
Fluoroquinolones, when compared with placebo or no intervention, decreased the risk of
The relative risk for adverse events was not statistically significant (relative risk 1.30 [confidence interval 0.61–2.76]). Comparatively, in trials comparing trimethoprim/sulfamethoxazole with placebo or no intervention, the corresponding estimates were statistically significant (relative risk 2.42 [confidence interval 1.35–4.36] and 3.63 [confidence interval 1.32–9.98], respectively). Moreover, in trials that compared fluoroquinolones with trimethoprim/sulfamethoxazole, less resistance developed to fluoroquinolones in the fluoroquinolone group than that developed to trimethoprim/sulfamethoxazole in the trimethoprim/sulfamethoxazole group (relative risk 0.45 [confidence interval 0.27–0.74]). When fluoroquinolones were compared with placebo, the number of fungal infection episodes did not statistically or significantly differ (relative risk 0.83 [confidence interval 0.56–1.22]).
Fluoroquinolone prophylaxis increased the risk of fluoroquinolone-resistant infections, but the increased risk was not statistically significant (relative risk 1.69 [confidence interval 0.73–3.92]).