BACKGROUND: Intermittent infusion of vancomycin is widely used to treat late-onset sepsis in neonates. On the other hand, the continuous infusion of vancomycin could improve bactericidal efficacy since its action is time dependent. OBJECTIVE: To evaluate a simplified dosage schedule for continuous-infusion vancomycin therapy. METHODS: Prospective study in premature neonates (<34 weeks) with suspected coagulase-negative staphylococci (CoNS) sepsis. Before antibiotics at time zero (T0), serum creatinine was measured and blood cultures were collected. Vancomycin dosage began with 25 mg/kg/day or 15 mg/kg/day (period 1) and 30 mg/kg/day or 20 mg/kg/day (period 2) depending on whether serum creatinine was below or above 90 mumol/l. Two days after beginning treatment (first timepoint: T1), serum vancomycin was measured and second blood cultures were collected. RESULTS: Between June 2002 and December 2005, 145 neonates were evaluated. At birth, the median (interquartile range) body weight was 920 (500-1160) g and gestational age was 28 (26-29) weeks. At T1, serum vancomycin was within the required range in 74.5% of neonates (108/145). Serum vancomycin levels were higher in period 2 than in period 1 (20 mg/l vs 13 mg/l, p<0.05). At T0, 55% (80/145) of blood cultures were positive for CoNS, but 71% (57/80) were negative at T1. Four days after beginning treatment, 92% of subjects had recovered without removing the central venous catheter. CONCLUSION: Using this simplified dosage schedule, bactericidal efficacy was maintained and most subjects had serum vancomycin concentrations within the therapeutic range.
BACKGROUND: Intermittent infusion of vancomycin is widely used to treat late-onset sepsis in neonates. On the other hand, the continuous infusion of vancomycin could improve bactericidal efficacy since its action is time dependent. OBJECTIVE: To evaluate a simplified dosage schedule for continuous-infusion vancomycin therapy. METHODS: Prospective study in premature neonates (<34 weeks) with suspected coagulase-negative staphylococci (CoNS) sepsis. Before antibiotics at time zero (T0), serum creatinine was measured and blood cultures were collected. Vancomycin dosage began with 25 mg/kg/day or 15 mg/kg/day (period 1) and 30 mg/kg/day or 20 mg/kg/day (period 2) depending on whether serum creatinine was below or above 90 mumol/l. Two days after beginning treatment (first timepoint: T1), serum vancomycin was measured and second blood cultures were collected. RESULTS: Between June 2002 and December 2005, 145 neonates were evaluated. At birth, the median (interquartile range) body weight was 920 (500-1160) g and gestational age was 28 (26-29) weeks. At T1, serum vancomycin was within the required range in 74.5% of neonates (108/145). Serum vancomycin levels were higher in period 2 than in period 1 (20 mg/l vs 13 mg/l, p<0.05). At T0, 55% (80/145) of blood cultures were positive for CoNS, but 71% (57/80) were negative at T1. Four days after beginning treatment, 92% of subjects had recovered without removing the central venous catheter. CONCLUSION: Using this simplified dosage schedule, bactericidal efficacy was maintained and most subjects had serum vancomycin concentrations within the therapeutic range.
Authors: Julianne Kim; Sandra A N Walker; Dolores C Iaboni; Scott E Walker; Marion Elligsen; Michael S Dunn; Vanessa G Allen; Andrew Simor Journal: Antimicrob Agents Chemother Date: 2014-03-10 Impact factor: 5.191
Authors: Esther J H Janssen; Pyry A J Välitalo; Karel Allegaert; Roosmarijn F W de Cock; Sinno H P Simons; Catherine M T Sherwin; Johan W Mouton; Johannes N van den Anker; Catherijne A J Knibbe Journal: Antimicrob Agents Chemother Date: 2015-12-07 Impact factor: 5.191
Authors: Theresa Madigan; Christine B Teng; Jena Koshaish; Kent R Johnson; Kevin K Graner; Ritu Banerjee Journal: Am J Perinatol Date: 2014-05-16 Impact factor: 1.862