Serum gentamicin concentrations in compromised neonatal foals.

The research article discusses the impact of gentamicin treatment on compromised neonatal foals, detailing factors influencing serum gentamicin concentration and evaluating the clinical effectiveness of the treatment for foals with confirmed septicaemia.

Research Focus and Methodology

• The research involved twenty-one neonatal foals suffering from health complications who were treated at the Rural Veterinary Centre in 1993. The main objectives of the study were to check serum gentamicin concentrations when administered at a particular dosage, understand inter-foal variation in serum gentamicin concentrations, and evaluate the clinical efficacy of gentamicin in treating foals with confirmed septicaemia.
• Septicaemia, a severe infection that enters into the bloodstream, was confirmed in seven of the foals, while eight were suspected to have the condition due to high sepsis scores.
• The research findings are based on comprehensive observations, analysis and interpretations of the horn concentration levels, changes in foal conditions and responses to the administered gentamicin therapy.

Serum Gentamicin Concentrations

• The research found that Peak serum concentrations (Ps) were greater than 6 microg/ml in all the neonatal foals, while more than 60% had concentrations surpassing 8 microg/ml.
• On the other hand, all the foals displayed trough serum concentrations (Ts) which were less than 2 microg/ml. These variations in the gentamicin serum concentrations demonstrate the fluctuating efficacy of the treatment, thereby impacting the healing progress in the foals.

Factors Affecting Gentamicin Concentrations

• The variation in the peak serum concentrations was attributed to certain factors such as the age of the foals (with those less than 24 hours showing decreased concentration levels), body weight (less than 38 kg also had decreased levels) and the severity of dehydration (increase in Ps with 8-12% bodyweight dehydration).

Clinical Efficacy and Side Effects

• The research found no direct correlation between clinical response and Ps greater than 8 microg/ml. However, severe clinical signs of depression did negatively affect the response to the treatment.
• None of the studied foals developed septic arthritis or pneumonia during or after therapy, indicating the absence of noteworthy adverse reactions from the gentamicin treatment.
• No evidence of gentamicin-induced nephrotoxicity was found during the therapy, as signified by the lack of elevated serum creatinine concentrations in the foals.