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[Study on the serum concentrations of gentamicin after intravenous drip infusion]
Abstract:
Serum concentrations of gentamicin (GM) were monitored after intravenous drip infusion of 60 mg over 30 minutes, 1 hour and 2 hours. These concentrations were compared with those after intramuscular injection. The mean peak serum concentration obtained at 30 minutes after intramuscular injection (5.09 micrograms/ml) and those obtained at the end of intravenous drip infusion (5.17--6.66 micrograms/ml) were comparable. Serum concentrations decreased to less than 2.0 micrograms/ml at 6 to 8 hours after injection or infusion in all cases except 1 with less body weight than others. Pharmacokinetic analysis showed that the T1/2 of GM ranged from 2.49 to 4.33 hours and that the AUC ranged from 19.66 to 27.09 hr X micrograms/ml. Results obtained in this study suggested that the usefulness of intravenous drip infusion over the time from 30 minutes to 2 hours is equal to that of intramuscular injection in the GM therapy.
Insights
Intravenous drip infusion of gentamicin (GM) over 30 minutes to 2 hours yielded comparable serum concentrations to intramuscular injection. This suggests similar therapeutic effectiveness for gentamicin therapy between the two administration methods.
Area of Science:
- Pharmacology
- Clinical Pharmacy
Context:
- Gentamicin (GM) is a crucial antibiotic for treating severe bacterial infections.
- Optimizing gentamicin administration routes is vital for achieving therapeutic efficacy and minimizing toxicity.
- Intravenous (IV) and intramuscular (IM) injections are common methods for gentamicin delivery.
Purpose:
- To compare serum concentrations of gentamicin following intravenous drip infusion (30 minutes, 1 hour, 2 hours) versus intramuscular injection.
- To evaluate the pharmacokinetic profiles and therapeutic equivalence of different gentamicin administration durations.
Summary:
- Serum gentamicin concentrations after IV drip infusion (60 mg over 30 min, 1 hr, 2 hr) were comparable to IM injection.
- Peak serum concentrations and concentrations at 6-8 hours post-administration were similar, with T1/2 ranging from 2.49-4.33 hours and AUC from 19.66-27.09 hr x µg/ml.
- Pharmacokinetic analysis indicated comparable efficacy between IV drip infusion and IM injection for gentamicin therapy.
Impact:
- Findings support the interchangeability of IV drip infusion (30 min to 2 hr) and IM injection for gentamicin therapy.
- This information can guide clinical decisions on gentamicin administration, potentially improving patient convenience and treatment adherence.
- The study contributes to understanding gentamicin pharmacokinetics and optimizing its clinical use.