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[Purulent meningitis in children. II. Treatment and prognosis]
Abstract:
In the years 1970 to 1979 312 patients with purulent meningitis were treated at the University of Innsbruck, Department of Pediatrics. The overall fatality rate was 16%, the majority of fatal cases were due to gram negative organisms before 1977. The mortality rate of meningococcal meningitis due to H. influenzae was 5.6 and 1.6%, respectively and compares very well to reports in the literature. 12% of children are severely handicapped. Hearing impairment is the most frequent cause of retardation with 6.8%. We compared therapeutic results of two different treatment regimen in our clinic with the therapeutic results in other centers reported in the literature. The combination of ampicillin and chloramphenicol was superior to other treatment modalities particularly ampicillin monotherapy in H. influenzae meningitis and meningitis due to unknown organisms. Theoretical reservations against this combination have been eliminated by the proof of the bactericidal action of chloramphenicol against the most common meningeal pathogens and the synergistic action with beta lactam antibiotics. In pneumococcal meningitis the administration of high doses of Na-Penicillin G as i. v. bolus proved to be connected with unexpected complications and fatalities. The administration of 25000-40000 E Na Penicillin G as an i. v. infusion over 1 hour 4--6 times daily was a less hazardous yet effective therapy. Unsatisfying results in the treatment of gram negative meningitis in neonates prompted the investigation of a new compound fosfomycin for this indication. In vitro investigation of the antimicrobial activity against 68 meningeal pathogens and investigation of this drug in a lapine model showed encouraging results. In the last years a limited clinical trial in severely affected newborn infants was done with promising therapeutic efficacy. A larger scale investigation of this drug is now proceeding in form of a National cooperative Study of gram negative meningitis in Austria. Besides an effective antimicrobial treatment particular attention has to be paid to an adequate fluid and electrolyte replacement. Symptomatic therapy of complications e. g. seizures as well as continuous close monitoring of all vital signs is mandatory for optimal therapeutic success. Subdural effusions have been observed infrequently and only diagnostic subdural punctures have been performed.
Insights
This study analyzed purulent meningitis treatments from 1970-1979. The combination of ampicillin and chloramphenicol proved superior for H. influenzae meningitis, while fosfomycin shows promise for gram-negative neonatal meningitis.
Area of Science:
- Pediatrics
- Infectious Diseases
- Clinical Pharmacology
Context:
- Purulent meningitis poses significant risks, with varying treatment efficacies and outcomes.
- Historical data from 1970-1979 at the University of Innsbruck provides a basis for evaluating treatment strategies.
- Gram-negative organisms and H. influenzae were key pathogens, influencing mortality rates.
Purpose:
- To compare the therapeutic results of different meningitis treatment regimens.
- To evaluate the efficacy of ampicillin and chloramphenicol combination therapy.
- To investigate novel treatments like fosfomycin for neonatal gram-negative meningitis.
Summary:
- The study reviewed 312 cases of purulent meningitis, noting a 16% overall fatality rate, with gram-negative organisms being a major cause before 1977.
- Ampicillin and chloramphenicol combination therapy demonstrated superior outcomes for H. influenzae and unknown meningitis compared to ampicillin monotherapy.
- High-dose intravenous penicillin G bolus for pneumococcal meningitis was associated with complications; slower infusion proved safer and effective. Fosfomycin showed promise in preliminary studies for neonatal gram-negative meningitis.
Impact:
- The findings support the use of ampicillin and chloramphenicol for specific bacterial meningitis types, challenging previous theoretical concerns.
- Revised administration protocols for penicillin G in pneumococcal meningitis reduce associated risks.
- Fosfomycin is identified as a potential new therapeutic agent for neonatal gram-negative meningitis, warranting further investigation in larger trials.