- Design
- Target trial emulation using single health system admissions
- Population
- 742 admissions of children with medical complexity and non-severe pneumonia, 2016 to 2024
- Primary outcome
- Time to discharge
- Effect
- HR 0.84 (95% CI 0.68 to 1.04) for broad vs narrow spectrum
No guideline addresses antibiotic choice for community-acquired pneumonia in children with medical complexity, and many receive broad-spectrum treatment by default. This study emulated a trial using admissions to one US academic health system from 2016 to 2024: children aged 3 months to 21 years with complex chronic conditions and non-severe pneumonia. Those with chronic lung disease, tracheostomy, sickle cell disease or immunosuppression were excluded.
After weighting, 742 admissions were analysed. Starting broad-spectrum antibiotics within 12 hours did not shorten time to discharge (HR 0.84, 95% CI 0.68 to 1.04), and did not change progression to severe pneumonia (OR 1.29, 0.7 to 2.4) or 30-day revisits (OR 0.39, 0.1 to 1.2).
For this group, the findings support starting with an aminopenicillin, as for otherwise healthy children, and keeping broad-spectrum agents for those with the excluded high-risk features or failure to improve.
- Consider amoxicillin or ampicillin first for non-severe pneumonia in children with medical complexity.
- Reserve broad-spectrum antibiotics for tracheostomy, chronic lung disease, immunosuppression or clinical deterioration.
- Reassess at 48 to 72 hours and escalate if the child is not improving.
- Check previous culture results; known resistant organisms change the choice.
Why it matters
Medical complexity is often treated as a reason for broad-spectrum cover, and this challenges that reflex.
Don't overread it
One health system and observational data; residual confounding by illness severity is possible.
The statistics, in plain English
All three confidence intervals include no difference, so broad-spectrum antibiotics were not shown to help. The intervals are fairly wide, so a modest difference either way cannot be excluded.
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