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Updated: Sep 21, 2026

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)
Published on: February 9, 2011
[Experimental and clinical studies of an ampicillin suppository (KS-R1) in pediatrics]
Insights
Rectal administration of KS-R1 demonstrated effective ampicillin (ABPC) blood levels in pediatric patients with heart disease. The treatment showed an 87% clinical efficacy rate with minimal side effects, making it a viable option for pediatric infections.
Area of Science:
- Pharmacology
- Pediatric Medicine
- Infectious Diseases
Background:
- Ampicillin (ABPC) is a crucial antibiotic for treating bacterial infections in children.
- Rectal drug administration offers an alternative route for pediatric patients, especially those with swallowing difficulties or gastrointestinal issues.
- Assessing the pharmacokinetic profile and clinical efficacy of novel drug formulations is essential for pediatric care.
Observation:
- Blood ampicillin levels were measured in pediatric patients with heart disease following rectal administration of KS-R1 (125 mg and 250 mg).
- Pharmacokinetic data revealed specific ABPC concentrations and half-lives in different age groups (1-4 years and 7-10 years).
- Clinical observations noted an 87% effective rate (excellent and good) in 55 pediatric patients with infections.
Findings:
- Rectal KS-R1 achieved average blood ampicillin levels ranging from 6.8 to 0.1 mcg/ml within 4 hours in younger children and 5.2 to 0.1 mcg/ml in older children.
- The half-life of ampicillin was approximately 0.64-0.65 hours, indicating rapid absorption and elimination.
- Bacteriological analysis showed eradication of 74% of isolated strains, with diarrhea as the most common side effect (3 cases).
Implications:
- Rectal KS-R1 provides a potentially effective and safe method for delivering ampicillin in pediatric patients, particularly those with heart conditions.
- The study supports the use of rectal formulations for improving antibiotic adherence and therapeutic outcomes in pediatric populations.
- Further research could explore optimal dosing and long-term efficacy of rectal KS-R1 in diverse pediatric groups.
Abstract:
Blood levels of ampicillin (ABPC) were measured in 10 childish patients with heart disease after the rectal administration of KS-R1 at doses of 125 mg and 250 mg. Average blood levels of ABPC at 15, 30 minutes, 1, 2 hours and 4 hours after the administration of KS-R1 were 6.8, 6.9, 3.1, 1.1 mcg/ml and 0.1 mcg/ml with half-life of 0.64 hours in patients of age from 1 year to 4 years 7 months old (dose level 8.9 approximately 13.9 mg/kg, average 10.5 mg/kg), and 5.2, 6.1, 3.4, 1.0 mcg/ml and 0.1 mcg/ml with half-life of 0.65 hours in patients of age from 7 years 10 months to 10 years 7 months old (dose level 8.3 approximately 13.9 mg/kg, average 9.8 mg/kg), respectively. Clinical effective rate (excellent and good) was 87% in 55 childish patients with infections. Bacteriologically, 13 strains (74%) out of 18 strains which were isolated from the patients were eradicated. No severe side effects were observed. Diarrhea was observed in 3 cases.
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