Should gentamicin trough levels be routinely obtained in term neonates?

Area of Science:

• Neonatal Medicine
• Pharmacology
• Infectious Diseases

Background:

• Gentamicin is a critical antibiotic for neonatal sepsis.
• Current practices for monitoring gentamicin levels in neonates vary.
• The necessity of routine trough level monitoring in low-risk infants is questioned.

Purpose of the Study:

• To evaluate the necessity of routine gentamicin trough levels in low-risk, term neonates.
• To determine the correlation between gentamicin trough levels, risk factors, and toxicity.
• To assess current gentamicin monitoring practices in US neonatal intensive care units (NICUs).

Main Methods:

• Retrospective cohort study of 346 term infants treated with gentamicin.
• Analysis of gentamicin trough levels, risk factors, and potential side effects.
• Survey of 75 academic NICUs on their gentamicin monitoring protocols.

Main Results:

• Routine gentamicin trough levels did not predict toxicity in low-risk neonates.
• A positive correlation was observed between gentamicin trough levels and serum creatinine.
• Significant inconsistencies in gentamicin monitoring practices were found across US NICUs.

Conclusions:

• Risk-factor-guided gentamicin trough level monitoring is more appropriate than routine monitoring for low-risk term neonates.
• This approach may help optimize antibiotic use and resource allocation.
• Standardizing monitoring practices based on risk stratification is recommended.