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Paeds Topicsacute-care-resuscitation-and-toxicology

Paeds · acute-care-resuscitation-and-toxicology

Septic shock resuscitation and vasoactive support

Also known as Paediatric septic shock resuscitation · Fluid-refractory septic shock · Vasoactive support in paediatric sepsis · Catecholamine-resistant septic shock · First-hour sepsis bundle

A fellowship approach to resuscitating paediatric septic shock: recognise the failing circulation early, restore perfusion with reassessed crystalloid aliquots, give broad-spectrum antibiotics within the first hour, and escalate to adrenaline for cold shock or noradrenaline for warm shock as the first-line vasoactive agent when shock is fluid refractory. Treat every step as a reassessment loop, watch for fluid accumulation, and call for critical-care help before local support is exceeded.

high11 referencesUpdated 16 July 202620 min readSource-verified · Sept 2026

Checked against its sources on 11 Sept 2026

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Target exams

RACP General PaediatricsRACP DWERACP DCERCPCH Progress+MRCPCH TheoryMRCPCH ClinicalABP General PediatricsACGME PediatricsRCPSC Pediatrics

Red flags

  • Cold, mottled skin with weak central pulses and altered consciousness is decompensated septic shock: act now, do not wait for hypotension
  • Shock that persists after two or three reassessed fluid boluses is fluid refractory: start a vasoactive agent without delay
  • Persistently poor perfusion despite vasoactive support is catecholamine resistant: add stress-dose hydrocortisone and seek the cause
  • A rising positive fluid balance with worsening oxygenation signals fluid accumulation injury: stop driving toward a fixed volume
  • Unresponsive, no breathing, no central pulse: move straight into the paediatric arrest algorithm
  • Any child who may need airway, ventilation, vasoactive or intensive-care support unavailable locally: call senior, PICU or retrieval now

Life stages

neonateinfanttoddlerpreschoolschool-ageadolescentyoung-adult-transition

Care settings

ed-acutewardpicunicuretrievalrural-remote

Clinical exam formats

written-only

Board mappings

  • Acute Care
  • Current 2026 PREP curriculum — Learning Objective 2.4.4: Assess and manage infants, children and young people with potential cardiac, respiratory or neurological emergencies or acute sepsis
  • Current 2026 PREP curriculum — Learning Objective 2.2.3: Perform acute resuscitation and advanced life support
  • Current 2026 PREP curriculum — Learning Objective 2.2.1: Recognise, prioritise and manage an acutely ill infant, child or young person
  • Renewed curriculum for first-year trainees from 2027 — Learning goal 11: Acute care and procedures
  • Renewed curriculum for first-year trainees from 2027 — Learning goal 17: Acute care
  • Clinical Applications
  • Medical Sciences
  • Long Cases
  • Short Cases
  • 4. Professional skills and knowledge: Patient management
  • 7. Patient safety, including safe prescribing
  • General Paediatrics: Resuscitates, stabilises and treats extremely unwell babies, children and young people, liaising with specialist teams, as necessary
  • General Paediatrics: Assumes the role of Acute Paediatric Team Leader
  • Applied Knowledge in Practice (AKP)
  • Theory and Science (TAS)
  • Clinical
  • History
  • Communication
  • Video
  • General Pediatrics Content Outline — Domain 7: Emergency and Critical Care
  • General Pediatrics Content Outline — Universal Task 4: Management and Treatment
  • General Pediatrics EPA 7: Recognizing a Severely Ill Patient, Providing Initial Management, and Mobilizing Resources Needed for Continued Care
  • Patient Care 5: Patient Management
  • Patient Care 4: Clinical Reasoning
  • Systems-Based Practice 1: Patient Safety
  • Medical Expert
  • Pediatrics: Core EPA #2 — Resuscitating and stabilizing critically ill patients
  • Pediatrics: Foundations EPA #1 — Recognizing deteriorating and/or critically ill patients and initiating stabilization and management
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Target exams

RACP General PaediatricsRACP DWERACP DCERCPCH Progress+MRCPCH TheoryMRCPCH ClinicalABP General PediatricsACGME PediatricsRCPSC Pediatrics

Red flags

  • Cold, mottled skin with weak central pulses and altered consciousness is decompensated septic shock: act now, do not wait for hypotension
  • Shock that persists after two or three reassessed fluid boluses is fluid refractory: start a vasoactive agent without delay
  • Persistently poor perfusion despite vasoactive support is catecholamine resistant: add stress-dose hydrocortisone and seek the cause
  • A rising positive fluid balance with worsening oxygenation signals fluid accumulation injury: stop driving toward a fixed volume
  • Unresponsive, no breathing, no central pulse: move straight into the paediatric arrest algorithm
  • Any child who may need airway, ventilation, vasoactive or intensive-care support unavailable locally: call senior, PICU or retrieval now

Life stages

neonateinfanttoddlerpreschoolschool-ageadolescentyoung-adult-transition

Care settings

ed-acutewardpicunicuretrievalrural-remote

Clinical exam formats

written-only

Board mappings

  • Acute Care
  • Current 2026 PREP curriculum — Learning Objective 2.4.4: Assess and manage infants, children and young people with potential cardiac, respiratory or neurological emergencies or acute sepsis
  • Current 2026 PREP curriculum — Learning Objective 2.2.3: Perform acute resuscitation and advanced life support
  • Current 2026 PREP curriculum — Learning Objective 2.2.1: Recognise, prioritise and manage an acutely ill infant, child or young person
  • Renewed curriculum for first-year trainees from 2027 — Learning goal 11: Acute care and procedures
  • Renewed curriculum for first-year trainees from 2027 — Learning goal 17: Acute care
  • Clinical Applications
  • Medical Sciences
  • Long Cases
  • Short Cases
  • 4. Professional skills and knowledge: Patient management
  • 7. Patient safety, including safe prescribing
  • General Paediatrics: Resuscitates, stabilises and treats extremely unwell babies, children and young people, liaising with specialist teams, as necessary
  • General Paediatrics: Assumes the role of Acute Paediatric Team Leader
  • Applied Knowledge in Practice (AKP)
  • Theory and Science (TAS)
  • Clinical
  • History
  • Communication
  • Video
  • General Pediatrics Content Outline — Domain 7: Emergency and Critical Care
  • General Pediatrics Content Outline — Universal Task 4: Management and Treatment
  • General Pediatrics EPA 7: Recognizing a Severely Ill Patient, Providing Initial Management, and Mobilizing Resources Needed for Continued Care
  • Patient Care 5: Patient Management
  • Patient Care 4: Clinical Reasoning
  • Systems-Based Practice 1: Patient Safety
  • Medical Expert
  • Pediatrics: Core EPA #2 — Resuscitating and stabilizing critically ill patients
  • Pediatrics: Foundations EPA #1 — Recognizing deteriorating and/or critically ill patients and initiating stabilization and management
The fellowship answer

Recognise paediatric septic shock from the whole circulation, not the blood pressure. Restore perfusion with reassessed crystalloid aliquots of 10 to 20 mL per kilogram, give broad-spectrum antibiotics within the first hour, and when shock persists after two or three boluses start a vasoactive agent: adrenaline for cold shock, noradrenaline for warm shock. Reassess after every action, treat a rising fluid balance as a warning sign, and escalate to intensive care and retrieval before local support is exceeded. [1] [5] [10]

Overview & Definition

Septic shock is the life-threatening circulatory failure that follows a dysregulated host response to infection. The problem is not the infection itself but the body's reaction to it: inflammation deranges blood vessel tone, leaks fluid out of the circulation, and weakens the heart, so that blood is no longer delivered to tissues in the amount they need. The child looks cold, mottled and poorly perfused long before the blood pressure falls, because children hold their pressure up by raising heart rate and squeezing down their blood vessels. Waiting for hypotension to diagnose shock is the classic, dangerous error. [1] [5]

The modern international definition is the Phoenix criteria, agreed in 2024. A child has paediatric sepsis when the Phoenix sepsis score totals 2 or more points across its organ-dysfunction domains, and paediatric septic shock when that sepsis includes at least one point of cardiovascular dysfunction. The cardiovascular component captures the children who need vasoactive medication, have a raised lactate despite fluid, or have a mean arterial pressure below the threshold for their age. This replaced the older Sepsis-2 framework because the old definition relied heavily on systemic inflammatory response criteria that are neither sensitive nor specific. [3] [11]

10-20Crystalloid bolus aliquotreassess after each
≤1Broad-spectrum antibioticsafter recognition
≥2Phoenix sepsis thresholdtotal score
CV ≥1Septic shockPhoenix cardiovascular
[1] [3]

Resuscitation of septic shock is a race to restore oxygen delivery before cells are starved, run in parallel with finding and killing the organism. The first hour is decisive: airway and breathing are supported, circulation is restored with fluid and then vasoactive drugs, glucose and electrolytes are corrected, and source control with antibiotics and drainage is begun. The Surviving Sepsis Campaign 2026 children's guideline sets the structure, but every step is a reassessment loop rather than a fixed prescription, because the same fluid that rescues one child can drown another. [1] [2]

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References11ShowHide
  1. [1]Weiss, Scott L Surviving Sepsis Campaign International Guidelines for the Management of Sepsis and Septic Shock in Children 2026 Pediatric critical care medicine : a journal of the Society of Critical Care Medicine and the World Federation of Pediatric Intensive and Critical Care Societies, 2026.PMID 41869844
  2. [2]Weiss, Scott L Surviving Sepsis Campaign International Guidelines for the Management of Septic Shock and Sepsis-Associated Organ Dysfunction in Children Pediatric critical care medicine : a journal of the Society of Critical Care Medicine and the World Federation of Pediatric Intensive and Critical Care Societies, 2020.PMID 32032273
  3. [3]Sanchez-Pinto LN, Bennett TD, DeWitt PE, et al. Development and Validation of the Phoenix Criteria for Pediatric Sepsis and Septic Shock JAMA, 2024.PMID 38245897
  4. [4]Maitland K, Kiguli S, Opoka RO, et al. Mortality after fluid bolus in African children with severe infection The New England journal of medicine, 2011.PMID 21615299
  5. [5]Bjorklund A, Resch J, Slusher T Pediatric Shock Review Pediatrics in review, 2023.PMID 37777656
  6. [6]Wen L, Xu L The efficacy of dopamine versus epinephrine for pediatric or neonatal septic shock: a meta-analysis of randomized controlled studies Italian journal of pediatrics, 2020.PMID 31937353
  7. [7]Sarmin M, Shaly NJ, Sultana T, et al. Efficacy of dopamine, epinephrine and blood transfusion for treatment of fluid refractory shock in children with severe acute malnutrition or severe underweight and cholera or other dehydrating diarrhoeas: protocol for a randomised controlled clinical trial BMJ open, 2023.PMID 37045565
  8. [8]Balamuth F, Scott HF, Weiss SL, et al. Validation of the Pediatric Sequential Organ Failure Assessment Score and Evaluation of Third International Consensus Definitions for Sepsis and Septic Shock Definitions in the Pediatric Emergency Department JAMA pediatrics, 2022.PMID 35575803
  9. [9]Ali AO, Kordi HAA, Alhag MHSA, et al. Restrictive Versus Liberal Fluid Strategy for Initial Resuscitation in Sepsis and Septic Shock: A Systematic Review and Meta Analysis Journal of clinical medicine research, 2026.PMID 41953594
  10. [10]Lee EP, Wu HP, Chan OW, et al. Hemodynamic monitoring and management of pediatric septic shock Biomedical journal, 2022.PMID 34653683
  11. [11]Schlapbach LJ, Weiss SL, Bembea MM, et al. Scoring Systems for Organ Dysfunction and Multiple Organ Dysfunction: The PODIUM Consensus Conference Pediatrics, 2022.PMID 34970683

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