Meta-analysisindependent cross-checkabstract checked★ key study I-ABX-103 standard review
In sepsis, antibiotics given early save lives
Appropriate timing of antibiotic initiation in patients with sepsis or septic shock: a systematic review and meta-analysis.
Overview
Ku NS et al.. Korean J Intern Med 2025 · PMID 40859809 · DOI 10.3904/kjim.2025.037
Patients with septic shock who received antibiotics within 1 hour died less often than those treated later.
Does the study support the specific claim? No · Methodological quality: moderate
Plain-language summary
Study explained simply
- What did the researchers want to find out?
Check whether antibiotic timing affects sepsis deaths
- How was the study done?
Meta-analysis of 13 observational studies
- How many people, animals or samples were studied?
79,246 patients
- What was actually found?
Earlier antibiotics linked to lower mortality, clearly in septic shock
- How large was the observed effect?
Not given numerically in abstract
- What do the results mean in everyday life?
Sepsis is an emergency; antibiotics should not be delayed or refused
- What are the study's limitations?
Observational data
- What does it say about Elawady's specific claim?
Contradicts the claim
- Do the results apply to Germany and Europe?
High
- What can explicitly not be concluded from this study?
Exact benefit per hour in sepsis without shock
Scientific in-depth review
1. Full reference
- Authors
- Ku NS et al.
- Journal
- Korean J Intern Med
- Year
- 2025
- Identifier
- PMID 40859809 DOI 10.3904/kjim.2025.037
- Verification
- verified – PubMed efetch 2026-10-26 + Crossref
- Retracted
- no
- Corrections
- none
- Extent checked
- abstract only
- Conflicts of interest and funding
Funding from Korean Society of Critical Care Medicine, Korea Disease Control and Prevention Agency and US VA HSR&D (PubMed record); COI statement empty in record.
2. Research question
Does the timing of antibiotic initiation influence mortality in sepsis or septic shock?
3. Study design and population
- Study design
- Meta-analysis – Systematic review and meta-analysis of observational studies
- Population
Adults with sepsis or septic shock
- Country
Multinational
- Period
Searches to November 2022
- Sample size
13 studies, 79,246 patients
- Inclusion and exclusion criteria
Prospective, retrospective and case-control studies comparing antibiotic timing
4. Methods and endpoints
- Exposure / intervention
Antibiotics within 1 h or within 3 h
- Comparator
Later antibiotic administration
- Endpoints
Mortality
- Statistical methods
Pooled comparison of timing groups
5. Actual results
- Results
Septic shock: mortality significantly lower with antibiotics within 1 h and within 3 h than with delay. Sepsis overall: no significant difference for within 1 h vs delayed, but significantly lower mortality within 3 h than delayed.
- Absolute risks
not reported in abstract
- Authors' conclusion
In septic shock, antibiotics within 1 hour reduce mortality; in sepsis, administration within 3 hours (not necessarily 1 hour) was associated with reduced mortality.
6. Strengths
- Large pooled population
- Separates sepsis and septic shock
7. Weaknesses
- Observational studies only; confounding by severity
- Effect sizes not given in abstract
8. Risk of bias
- Orienting tool
- AMSTAR 2
- Type of assessment
- simplified assessment (abstract only)
- Full formal assessment
- no
- Overall risk of bias
- some concerns
- Rationale
Observational evidence; no randomised trial of withholding antibiotics in sepsis exists.
9. Assessment of the statistical interpretation
Timing comparisons are between early and later treatment; every patient received antibiotics, so the harm of no treatment is greater than measured here.
10. Relevance to the specific claim
Shows that even hours of delay matter in septic shock; refusing antibiotics altogether is a far larger deviation.
11. Independent contrary findings
Supports some flexibility (up to 3 hours) in sepsis without shock.
12. Transferability to Germany and Europe
High; consistent with NICE NG253/NG254 and Surviving Sepsis 2021.
13. Overall methodological judgement
Consistent evidence that timely antibiotics reduce sepsis mortality, especially in shock.
| Multidimensional assessment | |
|---|---|
| Authenticity of the source | verified |
| Methodological quality | moderate |
| Risk of bias | some concerns |
| Precision of results | moderate |
| Directness | indirect |
| Reproducibility | replicated |
| Consistency with the overall evidence | consistent |
| Regional transferability | high |
| Adequacy of the interpretation (by the archive) | not applicable |
14. Open questions
Optimal timing in sepsis without shock.
15. Linked fact checks
- Antibiotics should not be used as a treatment at all; nobody should take an antibiotic for any reason (not even after a tooth extraction); the body can cope on its own. – Studies contradicting or limiting the claim