Does prolonged β-lactam infusions improve clinical outcomes compared to intermittent infusions? A meta-analysis and systematic review of randomized, controlled trials

BMC Infectious Diseases

Research Article

Pranita D Tamma¹  Michael L Rinke²  Nirupama Putcha³  Kyle J Van Arendonk⁴  Yong D Suh⁵ 

[1] Department of Pediatric Infectious Diseases, Johns Hopkins Medical Institutions, Baltimore, MD, USA;Department of Pediatrics, Johns Hopkins Medical Institutions, Baltimore, MD, USA;Department of Pulmonary and Critical Care Medicine, Johns Hopkins Medical Institutions, Baltimore, MD, USA;Department of Surgery, Johns Hopkins Medical Institution, Baltimore, MD, USA;Johns Hopkins Medical Institutions, Baltimore, MD, USA;

关键词: β-lactams;    infusion;    multi-drug resistant Gram-negatives;    antibiotics;   

DOI  :  10.1186/1471-2334-11-181

 received in 2011-04-06, accepted in 2011-06-22,  发布年份 2011

来源: Springer

【 摘 要 】

BackgroundThe emergence of multi-drug resistant Gram-negatives (MDRGNs) coupled with an alarming scarcity of new antibiotics has forced the optimization of the therapeutic potential of available antibiotics. To exploit the time above the minimum inhibitory concentration mechanism of β-lactams, prolonging their infusion may improve outcomes. The primary objective of this meta-analysis was to determine if prolonged β-lactam infusion resulted in decreased mortality and improved clinical cure compared to intermittent β-lactam infusion.MethodsRelevant studies were identified from searches of MEDLINE, EMBASE, and CENTRAL. Heterogeneity was assessed qualitatively, in addition to I2 and Chi-square statistics. Pooled relative risks (RR) and 95% confidence intervals (CI) were calculated using Mantel-Haenszel random-effects models.ResultsFourteen randomized controlled trials (RCTs) were included. Prolonged infusion β-lactams were not associated with decreased mortality (n= 982; RR 0.92; 95% CI:0.61-1.37) or clinical cure (n = 1380; RR 1.00 95% CI:0.94-1.06) compared to intermittent infusions. Subgroup analysis for β-lactam subclasses and equivalent total daily β-lactam doses yielded similar results. Most studies had notable methodological flaws.ConclusionsNo clinical advantage was observed for prolonged infusion β-lactams. The limited number of studies with MDRGNs precluded evaluation of prolonged infusion of β-lactams for this subgroup. A large, multicenter RCT with critically ill patients infected with MDRGNs is needed.

【 授权许可】

CC BY   
© Tamma et al; licensee BioMed Central Ltd. 2011