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Episode 84: The Febrile Infant Lottery
2 PAEDS IN A POD Episode 84 | The Febrile Infant Lottery Released: 24/5/2026 | Runtime: ~20 minutes
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
EPISODE SUMMARY
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
This episode opens with a large London study showing that the care a febrile young infant receives depends heavily on which hospital they attend, with full adherence to national guidance achieved in only one in five presentations and over-investigation almost as common as under-investigation. The second main story examines a French randomised controlled trial of automated closed-loop oxygen titration in bronchiolitis — negative on its primary endpoint of length of stay, but with coherent secondary signals on saturation targeting and oxygen flow that make it a useful lesson in reading past the abstract. What's Caught My Eye covers a systematic review of electronic sepsis alerts in children, a multicentre cohort of in-hospital neonatal head injury on the postnatal ward, and a study asking whether comprehensive respiratory virus panels change outcomes in discharged children.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
MAIN STORY 1: How much does the febrile infant's hospital matter? ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
The febrile infant under ninety days is one of the highest-stakes presentations in paediatric emergency and acute care. National guidance exists precisely to compress that diagnostic uncertainty into something consistent. This retrospective study across twenty-one London hospitals, run through the London REACH network, tested whether care actually looks the same once that guidance is applied — and the answer is that it does not.
Key findings:
- 2,008 presentations of infants aged 90 days or younger; 41.1% were febrile at the point of assessment
- Blood tests performed in 73.7% overall, but ranging from 55.4% to 96.7% across sites; lumbar puncture 40.8% overall, range 17.1% to 70.7%; urinalysis 63.4% overall, range 43.4% to 85.4%
- Antibiotics started in 57.7% overall (site range 35.4% to 90.2%); admission in 63.5% overall (site range 46.7% to 99.2%)
- Full adherence to national clinical practice guidelines in only 21.9% of presentations; partial adherence 24.4%; non-adherence 31.2%; over-adherence 23.5%
- Adherence was higher in infants under 28 days and in those febrile during assessment
The clinical message is that variation runs hard in both directions. We tend to fear under-investigation and the missed serious bacterial infection, but over-investigation — unnecessary lumbar puncture, septic screen, intravenous antibiotics and admission in a well baby — was almost as common, and it is not a neutral act. The practical focus for departments is the infant who is afebrile by the time they are assessed, where the guidance gives least direction and the variation is widest.
This is London-specific, retrospective, and the study period overlaps the later pandemic, so the absolute numbers will not transfer directly to a district general setting.
Habermann S, Hartzenberg R, Loucaides EM, et al. (London REACH Network). Variation in management of febrile infants younger than 90 days across London: a retrospective cohort study. European Journal of Pediatrics. 2026;185(6). https://doi.org/10.1007/s00431-026-06938-y
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
MAIN STORY 2: Automated oxygen titration in bronchiolitis ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Oxygen titration in bronchiolitis is a constant low-level drain on nursing time across the winter. This trial tested whether handing the titration to a closed-loop device improves the outcome that matters to families and to flow — length of hospital stay.
Key findings:
- Multicentre randomised controlled trial, ten paediatric departments in France, 2018 to 2023; 103 infants aged 1 to 12 months with acute bronchiolitis requiring oxygen, severe bronchiolitis excluded
- Primary endpoint negative: median stay 71.0 hours with the FreeO2 device versus 69.6 hours with manual titration (p=0.39)
- Time within the target oxygen saturation zone 89.4% with automation versus 74.9% with manual titration (p<0.05)
- Median oxygen flow 0.1 L/min with automation versus 0.3 L/min manual (p<0.05); no significant difference in re-hospitalisation at 7 or 30 days or in non-invasive ventilation use
The bottom line is that automated titration does not shorten length of stay, so it should not be argued for on that basis, but the secondary signals are coherent — better time in target range at lower oxygen flows. The wider teaching point is that a negative primary endpoint in an underpowered trial is not the same as nothing having happened; length of stay in bronchiolitis is driven by feeding and overall trajectory far more than by oxygen delivery precision, so it may always have been an insensitive endpoint for this intervention.
This sits within the larger UK conversation on permissive hypoxaemia and oxygen saturation targets in bronchiolitis, and is worth reading alongside the BIDS trial and current oxygen-target guidance rather than in isolation.
Cros P, Martin A, Consigny M, et al. Automated oxygen flow titration for infants with bronchiolitis: a multicentre randomised controlled trial. Archives of Disease in Childhood. 2026 (advance online publication). https://doi.org/10.1136/archdischild-2025-329523
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
WHAT'S CAUGHT MY EYE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
1. Do electronic sepsis alerts actually save children?
A systematic review and narrative synthesis of twelve studies of EMR-embedded automated sepsis alerts in children under eighteen. Alerts improved process measures — faster time to antibiotics in four of six studies and faster fluids in two of five — without increasing hospital admissions or overall antibiotic use, but a mortality benefit was shown in only one study, in a PICU population. As more NHS trusts switch on electronic sepsis triggers, this is the honest evidence position to know: the process metrics move, the hard outcome data do not yet exist.
Driver B, Babl FE, Cheng D, et al. Alerts and Alarms — Can Electronic Medical Records Help Children and Adolescents Survive Sepsis? Journal of Paediatrics and Child Health. 2026 (advance online publication). https://doi.org/10.1111/jpc.70412
2. The neonatal head injury that happens on your postnatal ward
A retrospective cohort across fifteen Italian maternity units of newborns who fell during routine postnatal stay, with the PECARN rule applied retrospectively. Thirty-nine newborns, median age at injury 32 hours, most falls at night in rooming-in; a quarter (25.6%) had a clinically important traumatic brain injury but none needed neurosurgery or had sequelae, while 88.9% of low-risk babies were imaged anyway. A low-severity, high-anxiety event most clinicians never see described, sitting right at the edge of where PECARN was never validated — the newborn.
Corsini I, Cecchetti M, Giacalone M, et al. In-Hospital Neonatal Head Injury: A Multicenter Retrospective Cohort Study. Hospital Pediatrics. 2026 (advance online publication). https://doi.org/10.1542/hpeds.2025-008952
3. Does a bigger respiratory virus panel change anything?
A retrospective cohort of 2,346 children discharged from a paediatric emergency department with a viral respiratory illness, comparing a limited three-pathogen panel against a comprehensive twenty-two-pathogen panel. No difference in seven-day return visit rate after adjustment (aOR 0.96, 95% CI 0.67–1.38) and no difference in interventions or disposition on return. For the well child being discharged with an obvious viral illness, the bigger panel did not change outcomes — a clean stewardship argument for testing less, not more.
Stephan AM, Pérez-Lizardi JY, Stern LM, et al. Evaluating the Impact of Respiratory Pathogen Testing on Pediatric Emergency Department Return Visits and Management. Pediatric Emergency Care. 2026 (advance online publication). https://doi.org/10.1097/PEC.0000000000003622
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
KEY TAKEAWAYS
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
- Febrile infant care varies widely between hospitals, with full guideline adherence in only one in five presentations
- Over-investigation of the well febrile infant is almost as common as under-investigation, and is not a harmless default; the afebrile-on-assessment infant is where guidance is weakest
- Automated oxygen titration in bronchiolitis did not reduce length of stay, but a negative primary endpoint in an underpowered trial warrants reading the secondary data
- Electronic sepsis alerts reliably speed up antibiotics and fluids but the mortality evidence is not yet established
- For the well child discharged with a viral respiratory illness, a comprehensive virus panel did not improve outcomes over a limited one
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ FULL REFERENCE LIST ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
- Habermann S, Hartzenberg R, Loucaides EM, Lawson G, Carr D, Maconochie I, Nijman RG; London REACH Network. Variation in management of febrile infants younger than 90 days across London: a retrospective cohort study. European Journal of Pediatrics. 2026;185(6). https://doi.org/10.1007/s00431-026-06938-y
- Cros P, Martin A, Consigny M, Bihouee T, Masson A, Gaitan L, Roué JM. Automated oxygen flow titration for infants with bronchiolitis: a multicentre randomised controlled trial. Archives of Disease in Childhood. 2026 (advance online publication). https://doi.org/10.1136/archdischild-2025-329523
- Driver B, Babl FE, Cheng D, Gelbart B, Long E, McNab S, Osowicki J, Salib P, Williams A, Haeusler GM. Alerts and Alarms — Can Electronic Medical Records Help Children and Adolescents Survive Sepsis? Journal of Paediatrics and Child Health. 2026 (advance online publication). https://doi.org/10.1111/jpc.70412
- Corsini I, Cecchetti M, Giacalone M, Aceti A, Francescato G, Bechi F, Chiaretti A, Bernardini R, Vasarri P, Grosso S, Magi L, Centenari C, Navari S, Coccolini E, Agostiniani R, Cerbo RM, Ficial B, Dani C, Parri N. In-Hospital Neonatal Head Injury: A Multicenter Retrospective Cohort Study. Hospital Pediatrics. 2026 (advance online publication). https://doi.org/10.1542/hpeds.2025-008952
- Stephan AM, Pérez-Lizardi JY, Stern LM, Jonas JA, Thomas C, Gerber N, Acker KP, Levine DA. Evaluating the Impact of Respiratory Pathogen Testing on Pediatric Emergency Department Return Visits and Management. Pediatric Emergency Care. 2026 (advance online publication). https://doi.org/10.1097/PEC.0000000000003622
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
2 Paeds in a Pod is a paediatric medical education podcast hosted by Dr Ian Lewins, Clinical Lead for Paediatric Urgent and Emergency Care at University Hospitals of Derby and Burton NHS Foundation Trust. New episodes fortnightly.
If you found this episode useful, please share it with a colleague.
The content of this podcast is intended for educational purposes only. It does not constitute clinical advice. Always refer to current national guidelines and local protocols when making clinical decisions.
View all episodes
By Dr Ian Lewins
5
11 ratings
2 PAEDS IN A POD Episode 84 | The Febrile Infant Lottery Released: 24/5/2026 | Runtime: ~20 minutes
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
EPISODE SUMMARY
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
This episode opens with a large London study showing that the care a febrile young infant receives depends heavily on which hospital they attend, with full adherence to national guidance achieved in only one in five presentations and over-investigation almost as common as under-investigation. The second main story examines a French randomised controlled trial of automated closed-loop oxygen titration in bronchiolitis — negative on its primary endpoint of length of stay, but with coherent secondary signals on saturation targeting and oxygen flow that make it a useful lesson in reading past the abstract. What's Caught My Eye covers a systematic review of electronic sepsis alerts in children, a multicentre cohort of in-hospital neonatal head injury on the postnatal ward, and a study asking whether comprehensive respiratory virus panels change outcomes in discharged children.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
MAIN STORY 1: How much does the febrile infant's hospital matter? ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
The febrile infant under ninety days is one of the highest-stakes presentations in paediatric emergency and acute care. National guidance exists precisely to compress that diagnostic uncertainty into something consistent. This retrospective study across twenty-one London hospitals, run through the London REACH network, tested whether care actually looks the same once that guidance is applied — and the answer is that it does not.
Key findings:
- 2,008 presentations of infants aged 90 days or younger; 41.1% were febrile at the point of assessment
- Blood tests performed in 73.7% overall, but ranging from 55.4% to 96.7% across sites; lumbar puncture 40.8% overall, range 17.1% to 70.7%; urinalysis 63.4% overall, range 43.4% to 85.4%
- Antibiotics started in 57.7% overall (site range 35.4% to 90.2%); admission in 63.5% overall (site range 46.7% to 99.2%)
- Full adherence to national clinical practice guidelines in only 21.9% of presentations; partial adherence 24.4%; non-adherence 31.2%; over-adherence 23.5%
- Adherence was higher in infants under 28 days and in those febrile during assessment
The clinical message is that variation runs hard in both directions. We tend to fear under-investigation and the missed serious bacterial infection, but over-investigation — unnecessary lumbar puncture, septic screen, intravenous antibiotics and admission in a well baby — was almost as common, and it is not a neutral act. The practical focus for departments is the infant who is afebrile by the time they are assessed, where the guidance gives least direction and the variation is widest.
This is London-specific, retrospective, and the study period overlaps the later pandemic, so the absolute numbers will not transfer directly to a district general setting.
Habermann S, Hartzenberg R, Loucaides EM, et al. (London REACH Network). Variation in management of febrile infants younger than 90 days across London: a retrospective cohort study. European Journal of Pediatrics. 2026;185(6). https://doi.org/10.1007/s00431-026-06938-y
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
MAIN STORY 2: Automated oxygen titration in bronchiolitis ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Oxygen titration in bronchiolitis is a constant low-level drain on nursing time across the winter. This trial tested whether handing the titration to a closed-loop device improves the outcome that matters to families and to flow — length of hospital stay.
Key findings:
- Multicentre randomised controlled trial, ten paediatric departments in France, 2018 to 2023; 103 infants aged 1 to 12 months with acute bronchiolitis requiring oxygen, severe bronchiolitis excluded
- Primary endpoint negative: median stay 71.0 hours with the FreeO2 device versus 69.6 hours with manual titration (p=0.39)
- Time within the target oxygen saturation zone 89.4% with automation versus 74.9% with manual titration (p<0.05)
- Median oxygen flow 0.1 L/min with automation versus 0.3 L/min manual (p<0.05); no significant difference in re-hospitalisation at 7 or 30 days or in non-invasive ventilation use
The bottom line is that automated titration does not shorten length of stay, so it should not be argued for on that basis, but the secondary signals are coherent — better time in target range at lower oxygen flows. The wider teaching point is that a negative primary endpoint in an underpowered trial is not the same as nothing having happened; length of stay in bronchiolitis is driven by feeding and overall trajectory far more than by oxygen delivery precision, so it may always have been an insensitive endpoint for this intervention.
This sits within the larger UK conversation on permissive hypoxaemia and oxygen saturation targets in bronchiolitis, and is worth reading alongside the BIDS trial and current oxygen-target guidance rather than in isolation.
Cros P, Martin A, Consigny M, et al. Automated oxygen flow titration for infants with bronchiolitis: a multicentre randomised controlled trial. Archives of Disease in Childhood. 2026 (advance online publication). https://doi.org/10.1136/archdischild-2025-329523
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
WHAT'S CAUGHT MY EYE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
1. Do electronic sepsis alerts actually save children?
A systematic review and narrative synthesis of twelve studies of EMR-embedded automated sepsis alerts in children under eighteen. Alerts improved process measures — faster time to antibiotics in four of six studies and faster fluids in two of five — without increasing hospital admissions or overall antibiotic use, but a mortality benefit was shown in only one study, in a PICU population. As more NHS trusts switch on electronic sepsis triggers, this is the honest evidence position to know: the process metrics move, the hard outcome data do not yet exist.
Driver B, Babl FE, Cheng D, et al. Alerts and Alarms — Can Electronic Medical Records Help Children and Adolescents Survive Sepsis? Journal of Paediatrics and Child Health. 2026 (advance online publication). https://doi.org/10.1111/jpc.70412
2. The neonatal head injury that happens on your postnatal ward
A retrospective cohort across fifteen Italian maternity units of newborns who fell during routine postnatal stay, with the PECARN rule applied retrospectively. Thirty-nine newborns, median age at injury 32 hours, most falls at night in rooming-in; a quarter (25.6%) had a clinically important traumatic brain injury but none needed neurosurgery or had sequelae, while 88.9% of low-risk babies were imaged anyway. A low-severity, high-anxiety event most clinicians never see described, sitting right at the edge of where PECARN was never validated — the newborn.
Corsini I, Cecchetti M, Giacalone M, et al. In-Hospital Neonatal Head Injury: A Multicenter Retrospective Cohort Study. Hospital Pediatrics. 2026 (advance online publication). https://doi.org/10.1542/hpeds.2025-008952
3. Does a bigger respiratory virus panel change anything?
A retrospective cohort of 2,346 children discharged from a paediatric emergency department with a viral respiratory illness, comparing a limited three-pathogen panel against a comprehensive twenty-two-pathogen panel. No difference in seven-day return visit rate after adjustment (aOR 0.96, 95% CI 0.67–1.38) and no difference in interventions or disposition on return. For the well child being discharged with an obvious viral illness, the bigger panel did not change outcomes — a clean stewardship argument for testing less, not more.
Stephan AM, Pérez-Lizardi JY, Stern LM, et al. Evaluating the Impact of Respiratory Pathogen Testing on Pediatric Emergency Department Return Visits and Management. Pediatric Emergency Care. 2026 (advance online publication). https://doi.org/10.1097/PEC.0000000000003622
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
KEY TAKEAWAYS
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
- Febrile infant care varies widely between hospitals, with full guideline adherence in only one in five presentations
- Over-investigation of the well febrile infant is almost as common as under-investigation, and is not a harmless default; the afebrile-on-assessment infant is where guidance is weakest
- Automated oxygen titration in bronchiolitis did not reduce length of stay, but a negative primary endpoint in an underpowered trial warrants reading the secondary data
- Electronic sepsis alerts reliably speed up antibiotics and fluids but the mortality evidence is not yet established
- For the well child discharged with a viral respiratory illness, a comprehensive virus panel did not improve outcomes over a limited one
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ FULL REFERENCE LIST ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
- Habermann S, Hartzenberg R, Loucaides EM, Lawson G, Carr D, Maconochie I, Nijman RG; London REACH Network. Variation in management of febrile infants younger than 90 days across London: a retrospective cohort study. European Journal of Pediatrics. 2026;185(6). https://doi.org/10.1007/s00431-026-06938-y
- Cros P, Martin A, Consigny M, Bihouee T, Masson A, Gaitan L, Roué JM. Automated oxygen flow titration for infants with bronchiolitis: a multicentre randomised controlled trial. Archives of Disease in Childhood. 2026 (advance online publication). https://doi.org/10.1136/archdischild-2025-329523
- Driver B, Babl FE, Cheng D, Gelbart B, Long E, McNab S, Osowicki J, Salib P, Williams A, Haeusler GM. Alerts and Alarms — Can Electronic Medical Records Help Children and Adolescents Survive Sepsis? Journal of Paediatrics and Child Health. 2026 (advance online publication). https://doi.org/10.1111/jpc.70412
- Corsini I, Cecchetti M, Giacalone M, Aceti A, Francescato G, Bechi F, Chiaretti A, Bernardini R, Vasarri P, Grosso S, Magi L, Centenari C, Navari S, Coccolini E, Agostiniani R, Cerbo RM, Ficial B, Dani C, Parri N. In-Hospital Neonatal Head Injury: A Multicenter Retrospective Cohort Study. Hospital Pediatrics. 2026 (advance online publication). https://doi.org/10.1542/hpeds.2025-008952
- Stephan AM, Pérez-Lizardi JY, Stern LM, Jonas JA, Thomas C, Gerber N, Acker KP, Levine DA. Evaluating the Impact of Respiratory Pathogen Testing on Pediatric Emergency Department Return Visits and Management. Pediatric Emergency Care. 2026 (advance online publication). https://doi.org/10.1097/PEC.0000000000003622
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
2 Paeds in a Pod is a paediatric medical education podcast hosted by Dr Ian Lewins, Clinical Lead for Paediatric Urgent and Emergency Care at University Hospitals of Derby and Burton NHS Foundation Trust. New episodes fortnightly.
If you found this episode useful, please share it with a colleague.
The content of this podcast is intended for educational purposes only. It does not constitute clinical advice. Always refer to current national guidelines and local protocols when making clinical decisions.
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