Common Childhood Illnesses & Emergencies

Common Childhood Illnesses & Emergencies

In pediatric nursing, recognizing acute clinical deterioration and responding promptly to childhood emergencies is vital. The DHA assessment tests nursing competencies in managing common pediatric conditions such as acute dehydration, bronchiolitis (caused by Respiratory Syncytial Virus), febrile seizures, and the delivery of Pediatric Basic Life Support (BLS).

---

Pediatric Dehydration and Fluid Management

Infants and young children are highly susceptible to fluid and electrolyte imbalances due to their unique physiological characteristics: a larger body surface area relative to body mass, a higher metabolic rate, and a larger proportion of body water located in the extracellular fluid (ECF) space.

Classification of Dehydration

Clinical assessment is the primary tool to classify the severity of dehydration:

• Mild Dehydration (<5% weight loss): The child is alert and active. Mucous membranes are moist, skin turgor is normal, tears are present, and the anterior fontanelle is flat. Heart rate, blood pressure, and capillary refill (<2 seconds) are within normal limits. Urine output is slightly decreased.
• Moderate Dehydration (5% to 10% weight loss): The child is irritable or lethargic. Mucous membranes are dry, skin turgor is slightly decreased (sluggish recoil), tears are decreased, and the anterior fontanelle is slightly sunken. The heart rate is elevated (tachycardia), blood pressure is normal, and capillary refill is prolonged (2 to 3 seconds). Oliguria (<1 mL/kg/hour) is present.
• Severe Dehydration (>10% weight loss): The child is lethargic, obtunded, or unresponsive. Mucous membranes are dry/parched, skin turgor is severely decreased (tenting), tears are absent, and the anterior fontanelle is deeply sunken. Significant tachycardia is present, and hypotension is noted, signaling decompensated hypovolemic shock. Capillary refill is very prolonged (>3 seconds), extremities are cool and mottled, and the child is anuric.

Clinical Management of Dehydration

1. Oral Rehydration Therapy (ORT): The first-line treatment for mild-to-moderate dehydration. Use an oral rehydration solution (ORS) containing balanced glucose and electrolytes.
   • Dosing: Give 50 to 100 mL/kg of ORS over 4 hours.
   • Administration: Offer small, frequent sips (e.g., 5 mL or 1 teaspoon every 2 to 3 minutes) using a syringe, cup, or spoon to prevent vomiting. Resume breastfeeding or normal age-appropriate diet as soon as tolerated.
   • Avoid: High-sugar fluids (soda, fruit juices, sports drinks) because their high osmolality can worsen diarrhea.
2. Intravenous (IV) Fluid Therapy: Indicated for severe dehydration, hypovolemic shock, altered mental status, or failure of ORT.
   • Resuscitation Phase: Immediately administer an intravenous bolus of 20 mL/kg of an isotonic crystalloid (0.9% Normal Saline or Lactated Ringer's) over 10 to 20 minutes. Repeat boluses as needed to restore perfusion.
   • Maintenance Phase: Transition to maintenance fluids once the patient is hemodynamically stable. Do not add potassium to IV fluids until the child's renal function and urine output are confirmed to prevent life-threatening hyperkalemia and cardiac arrhythmias.

---

Bronchiolitis and Respiratory Syncytial Virus (RSV)

Bronchiolitis is an acute viral infection of the lower respiratory tract, primarily affecting infants under 2 years of age, with a peak incidence between 2 and 6 months. Respiratory Syncytial Virus (RSV) is the causative pathogen in the vast majority of cases.

Pathophysiology and Clinical Presentation

RSV invades the mucosal cells of the bronchioles, causing inflammation, mucosal edema, and cellular debris accumulation. This leads to airway narrowing, mucus plugging, air trapping, and atelectasis.

• Initial symptoms: Rhinorrhea, nasal congestion, cough, and a low-grade fever.
• Progressive respiratory distress: Tachypnea (respiratory rate >50 to 60 breaths/minute), expiratory wheezing, fine crackles, nasal flaring, grunting, and intercostal/subcostal retractions.
• Apnea: Can be the presenting symptom of RSV in young infants (especially those <2 months or born prematurely).

Nursing Interventions

• Airway Clearance: Perform nasopharyngeal suctioning using a bulb syringe or suction catheter, especially prior to feedings and before sleep. Clearing the nasal passages is critical because infants are obligatory nose breathers.
• Oxygenation: Administer humidified oxygen to maintain oxygen saturation (SpO2) of 90% to 92% or higher. Utilize high-flow nasal cannula (HFNC) therapy if respiratory distress worsens.
• Hydration Management: Assess hydration status. If the infant's respiratory rate is >60 breaths/minute, keep the infant NPO (nothing by mouth) and initiate IV fluids. Feeding a tachypneic infant orally carries a high risk of aspiration pneumonia due to rapid, uncoordinated breathing.
• Positioning: Elevate the head of the bed (30 to 45 degrees) to facilitate chest expansion and decrease diaphragmatic pressure.
• Infection Control: Place the infant on contact and droplet precautions (private room, gowns, masks, and gloves) to prevent nosocomial transmission of RSV.
• Avoid: Routine administration of bronchodilators (e.g., albuterol), systemic corticosteroids, or antibiotics, as evidence shows they are not effective for uncomplicated viral bronchiolitis.

---

Febrole Seizures

Febrile seizures are transient seizures that occur in infants and young children (typically between 6 months and 5 years of age, peaking at 12 to 18 months) in association with a rapid rise in body temperature (>38°C or 100.4°F), in the absence of a central nervous system infection or metabolic imbalance.

Classification

• Simple Febrile Seizure: Generalized tonic-clonic seizure, lasts less than 15 minutes, and does not recur within a 24-hour period.
• Complex Febrile Seizure: Focal onset, lasts longer than 15 minutes, or recurs within a 24-hour period.

Nursing Management during an Acute Seizure

1. Ensure Safety: Place the child on a flat, soft surface. Clear the surrounding area of hard, sharp, or hot objects to prevent injury.
2. Airway Preservation: Gently roll the child onto their side (recovery position) to prevent aspiration of saliva or emesis. Loosen tight clothing around the neck.
3. Do NOT Restrain: Never restrain the child's movements or place anything in the child's mouth (e.g., tongue depressors, fingers), as this can cause airway obstruction or dental trauma.
4. Observe and Time: Note the exact start time, duration, and seizure activity (tonic, clonic, focal). Observe the postictal phase.
5. Pharmacological Intervention: If the seizure lasts longer than 5 minutes, administer rescue medication as prescribed (e.g., rectal diazepam gel or intranasal/buccal midazolam).

Parental Education & Discharge Teaching

• Reassurance: Explain that simple febrile seizures are benign, self-limiting, and do not cause brain damage or increase the risk of developing epilepsy.
• Fever Management: Instruct parents to administer antipyretics (paracetamol/acetaminophen or ibuprofen) for comfort when the child has a fever.
• Critical Concept: Explicitly teach parents that antipyretics do not prevent febrile seizures. Febrile seizures are triggered by the rapid rate of temperature rise, which often occurs before the parent realizes the child is sick, rather than the peak temperature.
• Emergency Triggers: Teach parents when to seek immediate emergency care: a seizure lasting >5 minutes, breathing difficulties, blue discoloration of the lips, or a prolonged postictal state.

---

Pediatric Basic Life Support (BLS)

Nurses must execute pediatric basic life support according to international guidelines (AHA/ERC).

Recognition of Arrest & Pulse Checks

• Unresponsiveness: Tap the shoulder or flick the heel (infants) and shout. Check for breathing and a pulse simultaneously for no more than 10 seconds.
• Pulse Sites:
  • Infant (<1 year): Palpate the brachial artery (inner upper arm).
  • Child (1 year to puberty): Palpate the carotid artery (neck) or femoral artery (groin).
• CPR Indication for Bradycardia: If the pulse is <60 beats/minute with signs of poor perfusion (pallor, mottling, cyanosis, altered mental status) despite adequate oxygenation and ventilation, initiate chest compressions immediately. Children are highly dependent on heart rate for cardiac output, and severe bradycardia is a pre-arrest rhythm.

Chest Compression and Ventilation Standards

• Compression Depth:
  • Infants: Compress at least 1.5 inches (4 cm) or 1/3 of the anterior-posterior diameter of the chest.
  • Children: Compress at least 2 inches (5 cm).
• Compression Rate: 100 to 120 compressions per minute for all ages.
• Rescuer Ratios:
  • 1 Rescuer: 30:2 compression-to-ventilation ratio for infants and children.
  • 2 Rescuers (Healthcare Providers): 15:2 ratio to optimize ventilation and cardiac output.
• Hand Position and Technique:
  • Infant (1 Rescuer): Use the 2-finger technique (placed on the sternum just below the intermammary line).
  • Infant (2 Rescuers): Use the 2-thumb-encircling hands technique (preferred, as it generates higher coronary perfusion pressure).
  • Child: Use 1 or 2 hands on the lower half of the sternum.
• Rescue Breathing: If a pulse is present (60 bpm or higher) but the child is not breathing, deliver 1 breath every 2 to 3 seconds (20 to 30 breaths/minute).
• AED Application: Apply the automated external defibrillator (AED) as soon as it is available. Use pediatric pads or a pediatric dose attenuator for children under 8 years. If unavailable, use adult pads, ensuring they do not overlap (utilize anterior-posterior placement if necessary).