All EMS presentations
PediatricClinical presentation

Pediatric respiratory distress

A streamlined, differential-led presentation for rapid clinical review.

Clinical snapshot

Twenty-second review

  • Children have smaller airways and less reserve, so obstruction, bronchiolitis, asthma, pneumonia, croup, or foreign body can progress rapidly from compensation to fatigue.
  • Apnea, cyanosis, grunting, severe retractions, poor air entry, stridor at rest, bradycardia, or reduced interaction signals failure.
  • Keep metabolic acidosis or cardiac disease in the differential; overlapping or concurrent illness remains possible.
  • For pediatric respiratory distress, trends and combinations of findings are more informative than one isolated vital sign.
Differentials

Compare the clinical patterns

The repeated material is grouped inside each possibility. Open only the condition you need.

Serious3 conditions
Impending respiratory failureTime-sensitive high-risk possibility

HPI

Clarify onset; work of breathing/retractions; stridor, wheeze, barky cough or crackles.

Signs & symptoms

Fatigue, asymmetry, sudden onset, poor perfusion, or altered behaviour.

Focused exam

Observe before touching; assess appearance, tone, interaction, work of breathing, circulation to skin, hydration, and age-appropriate neurologic response; Use weight-based and age-specific references for treatment decisions.

Brief pathophysiology

Impending respiratory failure may cause pediatric respiratory distress through a time-sensitive process capable of rapid physiological deterioration.

Vital-sign pattern

What the trend may show

Possible pattern

Use current age-specific ranges and the child’s trend, appearance, interaction, work of breathing, and perfusion. Hypotension is a late sign of pediatric shock.

Heart rate (bpm)

Use age-adjusted range

Tachycardia may reflect fever, distress, dehydration, or compensation.

Respiratory rate (breaths/min)

Use age-adjusted range

Tachypnea and work of breathing can be early signs of illness.

Oxygen saturation (SpO₂)

Trend with breathing

Interpret with effort, colour, and the condition-specific oxygen target.

Blood pressure (mmHg)

Hypotension is late

A normal pressure does not exclude compensated pediatric shock.

Front-load in the triage report

  • Impending respiratory failure: Fatigue, asymmetry, sudden onset, poor perfusion, or altered behaviour.
  • Onset.
  • Work of breathing/retractions.
Foreign bodyTime-sensitive high-risk possibility

HPI

Clarify work of breathing/retractions; stridor, wheeze, barky cough or crackles; spo2.

Signs & symptoms

Fatigue, asymmetry, sudden onset, poor perfusion, or altered behaviour.

Focused exam

Use weight-based and age-specific references for treatment decisions; Observe before touching; assess appearance, speech or cry, retractions, nasal flaring, stridor, wheeze, air entry, hydration, and age.

Brief pathophysiology

Foreign body may cause pediatric respiratory distress through a time-sensitive process capable of rapid physiological deterioration.

Vital-sign pattern

What the trend may show

Possible pattern

Use current age-specific ranges and the child’s trend, appearance, interaction, work of breathing, and perfusion. Hypotension is a late sign of pediatric shock.

Heart rate (bpm)

Use age-adjusted range

Tachycardia may reflect fever, distress, dehydration, or compensation.

Respiratory rate (breaths/min)

Use age-adjusted range

Tachypnea and work of breathing can be early signs of illness.

Oxygen saturation (SpO₂)

Trend with breathing

Interpret with effort, colour, and the condition-specific oxygen target.

Blood pressure (mmHg)

Hypotension is late

A normal pressure does not exclude compensated pediatric shock.

Front-load in the triage report

  • Foreign body: Fatigue, asymmetry, sudden onset, poor perfusion, or altered behaviour.
  • Work of breathing/retractions.
  • Stridor, wheeze, barky cough or crackles.
Severe infectionTime-sensitive high-risk possibility

HPI

Clarify stridor, wheeze, barky cough or crackles; spo2; colour/cyanosis.

Signs & symptoms

Fatigue, asymmetry, sudden onset, poor perfusion, or altered behaviour.

Focused exam

Use weight-based and age-specific references for treatment decisions; Observe before touching; assess appearance, speech or cry, retractions, nasal flaring, stridor, wheeze, air entry, hydration, and age.

Brief pathophysiology

Severe infection may cause pediatric respiratory distress through a time-sensitive process capable of rapid physiological deterioration.

Vital-sign pattern

What the trend may show

Possible pattern

Use current age-specific ranges and the child’s trend, appearance, interaction, work of breathing, and perfusion. Hypotension is a late sign of pediatric shock.

Heart rate (bpm)

Use age-adjusted range

Tachycardia may reflect fever, distress, dehydration, or compensation.

Respiratory rate (breaths/min)

Use age-adjusted range

Tachypnea and work of breathing can be early signs of illness.

Oxygen saturation (SpO₂)

Trend with breathing

Interpret with effort, colour, and the condition-specific oxygen target.

Blood pressure (mmHg)

Hypotension is late

A normal pressure does not exclude compensated pediatric shock.

Front-load in the triage report

  • Severe infection: Fatigue, asymmetry, sudden onset, poor perfusion, or altered behaviour.
  • Stridor, wheeze, barky cough or crackles.
  • SpO2.
Common3 conditions
Viral bronchiolitisCommon presentation pattern

HPI

Clarify onset; work of breathing/retractions; stridor, wheeze, barky cough or crackles.

Signs & symptoms

Age, cough quality, wheeze, stridor, and prior history guide the pattern.

Focused exam

Observe before touching; assess appearance, tone, interaction, work of breathing, circulation to skin, hydration, and age-appropriate neurologic response; Use weight-based and age-specific references for treatment decisions.

Brief pathophysiology

Viral bronchiolitis may explain the presenting symptoms through a common clinical mechanism, while serial assessment checks for complications or an alternate cause.

Vital-sign pattern

What the trend may show

Possible pattern

Use current age-specific ranges and the child’s trend, appearance, interaction, work of breathing, and perfusion. Hypotension is a late sign of pediatric shock.

Heart rate (bpm)

Use age-adjusted range

Tachycardia may reflect fever, distress, dehydration, or compensation.

Respiratory rate (breaths/min)

Use age-adjusted range

Tachypnea and work of breathing can be early signs of illness.

Oxygen saturation (SpO₂)

Trend with breathing

Interpret with effort, colour, and the condition-specific oxygen target.

Blood pressure (mmHg)

Hypotension is late

A normal pressure does not exclude compensated pediatric shock.

Front-load in the triage report

  • Age, cough quality, wheeze, stridor, and prior history guide the pattern.
  • Onset.
  • Work of breathing/retractions.
CroupCommon presentation pattern

HPI

Clarify work of breathing/retractions; stridor, wheeze, barky cough or crackles; spo2.

Signs & symptoms

Age, cough quality, wheeze, stridor, and prior history guide the pattern.

Focused exam

Use weight-based and age-specific references for treatment decisions; Observe before touching; assess appearance, speech or cry, retractions, nasal flaring, stridor, wheeze, air entry, hydration, and age.

Brief pathophysiology

Croup may explain the presenting symptoms through a common clinical mechanism, while serial assessment checks for complications or an alternate cause.

Vital-sign pattern

What the trend may show

Possible pattern

Airway sounds, voice, work of breathing, and trajectory are more important than a single normal SpO₂. Deteriorating effort or rate may indicate fatigue, not improvement.

Respiratory rate (breaths/min)

Usually rises first

Tachypnea and increased effort commonly precede late respiratory failure.

Oxygen saturation (SpO₂)

May fall late

Oxygen saturation can remain normal until obstruction becomes severe.

Heart rate (bpm)

Often rises

Tachycardia may reflect hypoxia, distress, or compensatory response.

Blood pressure (mmHg)

Usually preserved

Hypotension suggests advanced hypoxia, anaphylaxis, or another shock state.

Front-load in the triage report

  • Age, cough quality, wheeze, stridor, and prior history guide the pattern.
  • Work of breathing/retractions.
  • Stridor, wheeze, barky cough or crackles.
AsthmaCommon presentation pattern

HPI

Clarify stridor, wheeze, barky cough or crackles; spo2; colour/cyanosis.

Signs & symptoms

Age, cough quality, wheeze, stridor, and prior history guide the pattern.

Focused exam

Use weight-based and age-specific references for treatment decisions; Observe before touching; assess appearance, speech or cry, retractions, nasal flaring, stridor, wheeze, air entry, hydration, and age.

Brief pathophysiology

Asthma may explain the presenting symptoms through a common clinical mechanism, while serial assessment checks for complications or an alternate cause.

Vital-sign pattern

What the trend may show

Possible pattern

Respiratory rate and effort are primary. A falling rate with fatigue, reduced air entry, or altered consciousness can signal impending ventilatory failure rather than improvement.

Respiratory rate (breaths/min)

Often rises

Tachypnea is common; a late fall with exhaustion is ominous.

Oxygen saturation (SpO₂)

May fall

Hypoxemia can occur in severe bronchospasm, but ventilation and fatigue also require assessment.

Heart rate (bpm)

Often rises

Distress and beta-agonists may increase heart rate.

Blood pressure (mmHg)

Usually preserved

Hypotension is a late or peri-arrest feature and warrants urgent reassessment.

Front-load in the triage report

  • Age, cough quality, wheeze, stridor, and prior history guide the pattern.
  • Stridor, wheeze, barky cough or crackles.
  • SpO2.
Mimics2 conditions
Metabolic acidosisImportant alternative presentation

HPI

Clarify onset; work of breathing/retractions; stridor, wheeze, barky cough or crackles.

Signs & symptoms

Tachypnea with limited respiratory findings requires broader assessment.

Focused exam

Observe before touching; assess appearance, tone, interaction, work of breathing, circulation to skin, hydration, and age-appropriate neurologic response; Use weight-based and age-specific references for treatment decisions.

Brief pathophysiology

Metabolic acidosis can resemble pediatric respiratory distress through overlapping symptoms or referred physiology despite a different primary mechanism.

Vital-sign pattern

What the trend may show

Possible pattern

Use current age-specific ranges and the child’s trend, appearance, interaction, work of breathing, and perfusion. Hypotension is a late sign of pediatric shock.

Heart rate (bpm)

Use age-adjusted range

Tachycardia may reflect fever, distress, dehydration, or compensation.

Respiratory rate (breaths/min)

Use age-adjusted range

Tachypnea and work of breathing can be early signs of illness.

Oxygen saturation (SpO₂)

Trend with breathing

Interpret with effort, colour, and the condition-specific oxygen target.

Blood pressure (mmHg)

Hypotension is late

A normal pressure does not exclude compensated pediatric shock.

Front-load in the triage report

  • Tachypnea with limited respiratory findings requires broader assessment.
  • Onset.
  • Work of breathing/retractions.
Cardiac diseaseImportant alternative presentation

HPI

Clarify work of breathing/retractions; stridor, wheeze, barky cough or crackles; spo2.

Signs & symptoms

Tachypnea with limited respiratory findings requires broader assessment.

Focused exam

Use weight-based and age-specific references for treatment decisions; Observe before touching; assess appearance, speech or cry, retractions, nasal flaring, stridor, wheeze, air entry, hydration, and age.

Brief pathophysiology

Cardiac disease can resemble pediatric respiratory distress through overlapping symptoms or referred physiology despite a different primary mechanism.

Vital-sign pattern

What the trend may show

Possible pattern

Use current age-specific ranges and the child’s trend, appearance, interaction, work of breathing, and perfusion. Hypotension is a late sign of pediatric shock.

Heart rate (bpm)

Use age-adjusted range

Tachycardia may reflect fever, distress, dehydration, or compensation.

Respiratory rate (breaths/min)

Use age-adjusted range

Tachypnea and work of breathing can be early signs of illness.

Oxygen saturation (SpO₂)

Trend with breathing

Interpret with effort, colour, and the condition-specific oxygen target.

Blood pressure (mmHg)

Hypotension is late

A normal pressure does not exclude compensated pediatric shock.

Front-load in the triage report

  • Tachypnea with limited respiratory findings requires broader assessment.
  • Work of breathing/retractions.
  • Stridor, wheeze, barky cough or crackles.
Red flags

Findings that should escalate concern

  • Apnea, cyanosis, grunting, severe retractions, poor air entry, stridor at rest, bradycardia, or reduced interaction signals failure.
  • Impending respiratory failure, foreign body, or severe infection: Fatigue, asymmetry, sudden onset, poor perfusion, or altered behaviour.
Related medications

Medication recognition

SalbutamolPrednisoneBudesonide/formoterol
Related EMS presentations

Continue the clinical pathway

RespiratoryAsthma exacerbationRespiratoryChoking / airway foreign bodyPediatricPediatric fever / unwell childRespiratoryStridor / upper-airway obstructionPediatricNewborn concern
References

Clinical and academic sources

Curated clinical guidance and peer-reviewed evidence supporting this presentation. Current BCEHS guidance, medical direction, and local policy remain authoritative for practice.

BCEHS Handbook — specific CPGs

  1. M03: Pediatrics - Respiratory EmergenciesBC Emergency Health Services Handbook

    Official BCEHS clinical practice guidance for pediatrics - respiratory emergencies.

Supporting clinical and academic evidence

  1. CEDIS Presenting Complaint List updateCanadian Association of Emergency Physicians

    Presenting-complaint terminology and categorization context. It does not establish a prehospital “top 100” ranking.

  2. Acute Care Committee statements and practice pointsCanadian Paediatric Society

    Canadian pediatric emergency guidance and peer-reviewed clinical practice statements.

  3. Pediatric Respiratory EmergenciesEmergency Medicine Clinics of North America · 2016

    Work of breathing, pediatric respiratory failure, common causes, airway support, and reassessment.