Children may need higher vancomycin doses to achieve therapeutic levels

AIM

Vancomycin is frequently used in paediatric hospitals. Data suggest trough levels of 10-20 mg/L are needed to achieve bacterial killing. This study aimed to evaluate if commonly used dosing regimens are efficient in reaching these levels and if therapeutic drug monitoring (TDM) was appropriately used.

METHODS

All children receiving intravenous vancomycin at the Children´s Hospital Iceland between 2012 and 2016 were included. Vancomycin trough levels were registered. Student t test, Wilcoxon test and regression models were used for statistical analysis.

RESULTS

A total of 105 children received 163 vancomycin treatments (55/105 neonates). Average daily dose in neonates was 23.4 mg/kg/day and 38.4 mg/kg/day for older children. No TDM was done in 58 treatments (35.6%). First trough levels were <10mg/L in 52.4% and <15mg/L in 92% of cases. Therapeutic levels were less likely achieved in children with malignancy (11.8%) compared with others (36.8%, p = 0.09).

CONCLUSIONS

In more than half of the cases, trough drug levels were <10 mg/L and malignancy was associated with the lowest probability of reaching therapeutic levels. This study suggests that starting doses of vancomycin in children should be higher, especially in relation to malignant diseases and supports the importance of antibiotic stewardship to ensure optimal antibiotic use.

A national scoping survey of standard infusions in paediatric and neonatal intensive care units in the United Kingdom

OBJECTIVES

This study aimed to explore the use of standard concentration infusions for intravenous infusions (SCI) in paediatric and neonatal units in the United Kingdom (UK). This included how many units use SCI, variation and overlap in concentrations, devices in use for administration and how the infusions were provided.

METHODS

Paediatric and neonatal units in the UK were surveyed using a self-administered web-based survey tool. Respondents were accessed through professional networks over a one-month period in summer 2016.

KEY FINDINGS

Thirty-one units (40%) used SCI. Twenty-one units provided information on presentation and administration of SCI. Forty-six medicines were used as SCI with 143 different concentrations. 'Smart' pump technology was most commonly used in the administration of SCI, and SCI were predominantly prepared by nurses in the near-patient setting.

CONCLUSIONS

The majority of paediatric and neonatal units in the UK used traditional weight-based methods for IV infusions and only 40% of responding units had established SCI. This local implementation of SCI resulted in a wide variation of presentations and concentrations and thus there is no true 'standardisation'. Further research should be conducted on harmonising these SCI across neonatal and paediatric care to facilitate adoption across all units.