Pediatric sepsis and septic shock: Recognition (Surviving Sepsis/PALS criteria), fluid bolus strategy and caution in resource-limited settings, vasoactive choice (epinephrine vs norepinephrine), and antibiotic timing within the first hour.
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"pediatric sepsis" AND "fluid resuscitation"
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Surviving Sepsis Campaign international guidelines children septic shock fluid bolus antibiotics epinephrine norepinephrine 2020
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https://pubmed.ncbi.nlm.nih.gov/32030529
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"pediatric sepsis" AND vasopressors
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site:cpr.heart.org PALS pediatric septic shock recognition tachycardia hypotension capillary refill antibiotics
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PMID: 38916738
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PMID: 39891147
Pediatric sepsis and septic shock: first-hour approach
1. Recognition: act on suspected infection plus abnormal perfusion or organ dysfunction
Do not wait for hypotension. Children can maintain blood pressure through tachycardia and vasoconstriction until late shock.
PALS bedside pattern
- Compensated shock: tachycardia plus poor perfusion with normal blood pressure.
- Decompensated shock: hypotension plus poor perfusion. This is a late and high-risk sign.
- Septic shock: suspected or proven infection with cardiovascular dysfunction, reflected by hypotension and/or signs of inadequate tissue perfusion despite initial resuscitation.
Red flags requiring immediate sepsis resuscitation:
- Abnormal mental status: lethargy, irritability, reduced interaction, confusion, seizures
- Tachycardia out of proportion to fever, tachypnea, respiratory distress
- Abnormal skin perfusion: cool or mottled extremities, delayed capillary refill, weak peripheral pulses, or a warm vasodilated child with bounding pulses and flash capillary refill
- Reduced urine output
- Metabolic acidosis or rising/persistently elevated lactate
- Hypoxemia, respiratory failure, coagulopathy, or other acute organ dysfunction.
Traditional pediatric SIRS criteria, infection plus abnormal temperature or leukocyte count and tachycardia or tachypnea, are sensitive but nonspecific. Use them as a trigger for assessment, not as proof of dangerous sepsis. Hypotension with delayed capillary refill is particularly ominous. ROSEN's Emergency Medicine Concepts and Clinical Practice, “Clinical Features,” lines 840-861.
2. Immediate first-hour actions
- ABCDE assessment, high-flow oxygen if needed, cardiorespiratory monitoring, temperature and glucose.
- Obtain IV access, or intraosseous access immediately if IV access is delayed.
- Draw blood culture and relevant tests, including lactate and glucose, only if this does not delay antibiotics.
- Start empiric broad-spectrum IV/IO antimicrobials, plus source control planning.
- Give carefully titrated fluid where indicated, reassessing after every bolus.
- Begin a vasoactive infusion early if shock persists or fluid is unsafe.
3. Fluids: give small reassessed boluses, not an automatic large volume
Where intensive care and ventilation support are available
The pediatric Surviving Sepsis Campaign recommends 10-20 mL/kg isotonic crystalloid per bolus, with reassessment after each bolus, to a total of up to 40-60 mL/kg in the first hour if shock persists and there is no fluid overload.
Use balanced crystalloid when available, although 0.9% saline remains acceptable. Stop further boluses when:
- Perfusion and mental status normalize
- Blood pressure and pulse quality improve
- Urine output improves
- Lung crackles, increasing work of breathing, new hepatomegaly, pulmonary edema, or worsening oxygenation appear
- There is evidence of cardiac dysfunction or fluid overload.
Reassessment should use serial clinical perfusion assessment, blood pressure, lung examination, hepatomegaly, urine output, lactate trend, and cardiac/lung POCUS when local expertise is available. The SSC pediatric guideline summary explicitly requires reassessment after every bolus and stopping if overload develops.
Resource-limited settings: the critical distinction
If ICU-level respiratory support is unavailable, fluid overload may not be safely managed.
- Sepsis without hypotension: do not routinely give fluid boluses. Give maintenance fluids and treat infection while monitoring closely.
- Septic shock with hypotension: use 10-20 mL/kg boluses, cautiously titrated, to a maximum of 40 mL/kg in the first hour, stopping for fluid overload or shock resolution.
This distinction reflects the risk seen when indiscriminate bolus therapy is used where ventilatory and intensive care backup are unavailable. See the SSC pediatric fluid recommendations.
Recent-evidence caution: meta-analyses still do not establish one universally superior fluid volume or infusion speed. Balanced crystalloids may reduce hyperchloremia and possibly renal adverse outcomes, but mortality benefit is uncertain (PMID 38916738; PMID 39891147).
4. Vasoactive treatment: epinephrine vs norepinephrine
Do not delay vasoactive support while waiting to complete a fixed fluid volume. Start it within the first hour when shock persists after initial fluid, when fluid overload develops, or where additional fluid is unsafe.
The SSC does not declare either epinephrine or norepinephrine universally preferred as first-line therapy in pediatric septic shock. It supports either agent, and both are preferred over dopamine. Infusion can begin through a well-monitored peripheral IV or IO line if central access is not immediately available. See the SSC vasoactive guidance.
Practical phenotype-guided choice
| Clinical profile | More suitable initial agent | Rationale |
|---|---|---|
| Cold shock: cool extremities, weak pulses, delayed refill, narrow pulse pressure, low-output physiology or myocardial dysfunction | Epinephrine | Adds inotropy and supports vascular tone |
| Warm shock: warm extremities, bounding pulses, flash refill, wide pulse pressure, marked vasodilation | Norepinephrine | Predominantly restores systemic vascular resistance |
| Unclear phenotype | Either epinephrine or norepinephrine | Children often have mixed physiology; response and bedside echo should guide adjustment |
Clinical phenotype can be misleading in children. Reassess perfusion, blood pressure, lactate trend, urine output, and bedside cardiac assessment frequently. A pediatric emergency medicine reference notes that either agent may be first line, while its local practice uses epinephrine for the common low-output/cold-shock presentation. ROSEN's Emergency Medicine Concepts and Clinical Practice, “Management,” lines 886-890.
5. Antibiotics: target within 1 hour for septic shock
For suspected septic shock, administer appropriate empiric antimicrobials as soon as possible, ideally within 1 hour of recognition.
Key rules:
- Obtain cultures first only if this causes no meaningful delay.
- Use broad enough initial therapy to cover the likely source, local resistance patterns, age, immune status, recent healthcare exposure, and devices.
- Do not wait for lactate, imaging, transfer, central access, or complete diagnostic certainty.
- Pursue source control early: drainage of abscess/empyema, removal of infected line when appropriate, surgery for perforation or necrotizing infection.
For probable sepsis without shock, SSC allows a brief, rapid evaluation, with antibiotics ideally within 3 hours if concern remains substantiated. The SSC antimicrobial recommendations distinguish this from shock, where the target is 1 hour.
One-line first-hour summary
Recognize infection plus impaired perfusion early, establish IV/IO access, give antibiotics within 1 hour, use 10-20 mL/kg crystalloid aliquots with repeated reassessment, restrict boluses where ICU rescue is unavailable, and begin epinephrine or norepinephrine early when shock is fluid-refractory or fluid-intolerant.
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