Treatment of otitis media caused by Hemophilus influenzae: evaluation of three antimicrobial regimens
Abstract:
Ninety young children with otitis media, proven by tympanocentesis culture to be due to Hemophilus influenzae, were treated in a prospective double-blind study with one of three antimicrobial regimens: ampicillin, erythromycin ethylsuccinate, or erythromycin ethylsuccinate with concomitant trisulfapyrimidines. Results of efficacy evaluation indicated that the combination was as effective as ampicillin and statistically superior to erythromycine alone. Of the strains of H influenzae identified, 15/9 were typable with 12/9, type b. In vitro sensitivity tests indicated that the strains were sensitive to the amtimicrobials studied in clinically attainable levels; however, comparison of individual efficacy ratings with sensitivity results indicated that some children in each treatment group failed to respond as predicted.
Insights
A combination of erythromycin ethylsuccinate and trisulfapyrimidines proved effective for treating children with Hemophilus influenzae otitis media, matching ampicillin efficacy.
Area of Science:
- Pediatrics
- Infectious Diseases
- Pharmacology
Background:
- Otitis media is a common childhood infection.
- Hemophilus influenzae is a frequent causative agent.
- Antimicrobial resistance necessitates evaluating treatment efficacy.
Purpose of the Study:
- To compare the efficacy of three antimicrobial regimens for otitis media caused by Hemophilus influenzae.
- To evaluate ampicillin, erythromycin ethylsuccinate, and a combination of erythromycin ethylsuccinate with trisulfapyrimidines.
Main Methods:
- Prospective, double-blind study involving ninety children.
- Tympanocentesis confirmed Hemophilus influenzae infection.
- Treatment groups received ampicillin, erythromycin ethylsuccinate, or combination therapy.
Main Results:
- The combination regimen was as effective as ampicillin.
- Combination therapy was statistically superior to erythromycin ethylsuccinate alone.
- Some treatment failures occurred despite in vitro sensitivity, suggesting complex factors in clinical response.
Conclusions:
- Erythromycin ethylsuccinate with trisulfapyrimidines is a viable treatment option for Hemophilus influenzae otitis media.
- Clinical outcomes may not always correlate with in vitro sensitivity.
- Further research into treatment response variability is warranted.
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