Approach to Child with Respiratory Distress 🔥🔥🔥

Initial Assessment and Triage

The triage of a child with severe respiratory distress begins with the Pediatric Assessment Triangle (PAT), a rapid visual and auditory assessment of the child's appearance, breathing, and color.
Appearance is evaluated using the "TICLS" mnemonic (Tone, Interactiveness, Consolability, Look/Gaze, Speech), which provides clues to brain perfusion and oxygenation.
Breathing assessment identifies abnormal respiratory rates (tachypnea or bradypnea), increased work of breathing (nasal flaring, retractions), and abnormal sounds (wheeze, grunt, stridor).
Color evaluation detects pallor, mottling, or cyanosis, indicating hypoxemia or impending cardiorespiratory failure.
Children with tachypnea, increased work of breathing, cyanosis, abnormal sensorium, and a room air $S p O_{2} < 94 %$ are categorized as having respiratory failure and require immediate resuscitation.

Clinical Signs	Anatomical Localization	Common Etiologies
Ala nasi flaring, suprasternal/supraclavicular retractions, stridor	Upper airway obstruction	Croup, Epiglottitis, Foreign body, Diphtheria
Subcostal/intercostal retractions, prolonged expiration, wheeze	Lower airway obstruction	Asthma, Acute Bronchiolitis
Intercostal/subcostal retractions, grunting, crepitations	Lung parenchyma	Community Acquired Pneumonia, ARDS
See-saw breathing, irregular breathing, bradypnea	Central disordered control	Raised Intracranial Pressure (ICP), Brain injury

Upper Airway Obstruction: Partial obstruction above the thoracic inlet results in turbulent airflow, producing a harsh, high-pitched stridor.
Lower Airway Obstruction: Small airway obstruction increases airway resistance and leads to air trapping and dynamic hyperinflation. Expiration becomes an active, prolonged process resulting in wheezing.
Parenchymal Disease: Alveolar consolidation or pulmonary edema leads to ventilation-perfusion mismatch, intrapulmonary shunting, and severe hypoxemia.

Airway (A): Ensure the airway is open and maintainable. Use simple positioning (head-tilt-chin lift or sniffing position) and oral suctioning to clear secretions. If the airway is not maintainable, prepare for advanced interventions.
Breathing (B): Administer heated, humidified $100 %$ supplemental oxygen using a non-rebreathing face mask to target an $S p O_{2} \geq 94 %$ .
For infants, use appropriate-sized nasal prongs with a flow rate of $1 - 2 L/min$ .
If the child exhibits severe retractions or fails to maintain an $S p O_{2} \geq 94 %$ , initiate non-invasive respiratory support such as Continuous Positive Airway Pressure (CPAP) or High Flow Nasal Cannula (HFNC).
CPAP provides distending pressure that recruits atelectatic alveoli and reduces the work of breathing, which may avert the need for invasive mechanical ventilation.

Circulation (C): Monitor heart rate, capillary refill time, and blood pressure. Obtain immediate intravenous (IV) or intraosseous (IO) access.
If concurrent shock is suspected (e.g., hypotension, prolonged capillary refill, marked tachycardia), administer rapid isotonic crystalloid fluid boluses ( $10 - 20 ml/kg$ ).
Disability (D): Continuously monitor the level of consciousness. Worsening hypoxia or hypercarbia often presents as excessive irritability, lethargy, obtundation, or coma.

Clinical Category	Specific Indicators for Intubation
Oxygenation Failure	Central cyanosis, or inability to maintain $S p O_{2} \geq 94 %$ despite CPAP, HFNC, or Non-Invasive Ventilation (NIV).
Neurological Decline	CNS signs of severe hypoxia including restlessness, obtunded sensorium, extreme lethargy, seizures, or coma.
Cardiovascular Compromise	Marked tachycardia, profound bradycardia, or hypotension indicating imminent cardiorespiratory arrest.
Clinical Worsening	Severe respiratory distress, exhaustion, or visible worsening of respiratory effort while on non-invasive support.

Acute Asthma: Administer inhaled salbutamol and inhaled budesonide (800 μg/dose) every 20 minutes for the first hour, along with systemic corticosteroids (oral prednisolone or IV hydrocortisone). For severe exacerbations, escalate to continuous salbutamol nebulization, IV magnesium sulphate ( $50 mg/kg$ ), and IV terbutaline.
Croup: Provide humidified oxygen in a non-threatening manner. Administer a single dose of oral, IM, or IV dexamethasone ( $0.6 mg/kg$ ). For severe distress, deliver nebulized adrenaline ( $5 ml$ of $1 : 1000$ undiluted solution).
Acute Bronchiolitis: Management is primarily supportive with oxygen and hydration. A trial of nebulized $3 %$ hypertonic saline or adrenaline may be considered, but routine antibiotics and systemic steroids are not recommended.
Severe Pneumonia: Initiate empiric IV antibiotics immediately (e.g., cefotaxime + amikacin for infants $1 - 2$ months, or ampicillin + gentamicin for children $2 - 59$ months). Adjust antibiotics if atypical or staphylococcal pneumonia is suspected.