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Febrile Convulsion Management - 18-Month-Old Baby (8.8 kg), Fever 103°F

Patient Profile

• Age: ~18 months (within the 6-60 month typical febrile seizure window)
• Weight: 8.8 kg
• Fever: 103°F (39.4°C)
• Presentation: Febrile convulsion

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Step 1 - Classify the Seizure (Simple vs Complex)

This child at 18 months, with a single brief generalized convulsion = most likely SIMPLE febrile seizure

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Step 2 - Immediate Hospital Management (Active Seizure)

A. ABCs First (0-5 minutes)

• Airway: Position child (lateral/recovery position), clear airway, suction if needed
• Breathing: Supplemental O₂ by mask; intubate only if apneic or airway compromised
• Circulation: Assess vitals, establish IV/IO access
• Bedside glucose: Check fingerstick blood glucose immediately

B. First-Line Anticonvulsant (if seizure is ongoing ≥5 min = Status Epilepticus)

Source: The Harriet Lane Handbook, 23rd Edition, Status Epilepticus Table 1.12

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C. If Seizure Continues (5-15 min) - Second-Line Agents

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D. Refractory Status (15-60 min)

• Continuous EEG monitoring
• Midazolam infusion: Load 0.2 mg/kg, then 0.05-2 mg/kg/hr
• MRI, lumbar puncture if indicated
• Consider broad-spectrum antibiotics + antivirals
• ICU transfer, consider anaesthesia (propofol/pentobarbital under specialist guidance)

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Step 3 - Fever Management

• Paracetamol (Acetaminophen): 15 mg/kg per dose = 132 mg PO/PR every 4-6 hours
• Ibuprofen: 10 mg/kg per dose = 88 mg PO every 6-8 hours (if >6 months)
• Tepid sponging for comfort
• Identify and treat the source of fever (this is the primary goal)

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Step 4 - Workup in Hospital

For SIMPLE Febrile Seizure (well-appearing, fully immunized, normal neuro exam):

• No routine neuroimaging, EEG, or blood workup needed for the seizure itself
• Labs and imaging should be directed at finding the source of fever
• No antiepileptic medications needed after a single simple febrile seizure

Indications for Lumbar Puncture:

• Signs of meningeal irritation (neck stiffness, Kernig/Brudzinski signs)
• Incomplete or unknown Hib / S. pneumoniae immunization status
• Prior antibiotic therapy (can mask meningitis signs)
• Febrile status epilepticus (LP should be performed)

For COMPLEX Febrile Seizure:

• EEG (obtain)
• Consider non-emergent MRI (evaluate for focal lesion)
• LP if concern for meningitis
• Treat active seizure per status epilepticus guidelines

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Step 5 - Admission Criteria

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Step 6 - Parent Counseling

• Febrile seizures are common (2-5% of children age 6 months to 5 years)
• Risk of epilepsy is only slightly elevated: ~1-2% vs 0.5-1% in general population
• Risk of recurrence of febrile seizure: ~1 in 3 children have another febrile seizure
• Antipyretics do not prevent febrile seizures from recurring
• Long-term antiepileptic prophylaxis is not recommended for simple febrile seizures
• First aid at home: Keep child safe, lateral position, do not restrain, do not put anything in mouth; if seizure >5 min - call emergency services

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Key Sources:

• The Harriet Lane Handbook, 23rd Edition (Johns Hopkins Hospital) - Febrile Seizures & Status Epilepticus Treatment Table 1.12
• Rosen's Emergency Medicine: Concepts and Clinical Practice - Febrile Seizures chapter
• AAP (American Academy of Pediatrics) consensus guidelines on febrile seizure evaluation and management

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IV Paracetamol (PCM) + DNS - Fever Management

IV Paracetamol (IV PCT)

• Dose: 15 mg/kg = 132 mg per dose
• Frequency: Every 6 hours (4 times/day)
• Route: IV infusion over 15 minutes
• Formulation available: Paracetamol IV 150 mg/15 mL vials (10 mg/mL)
• Volume to give: 132 mg ÷ 10 mg/mL = 13.2 mL per dose
• Dilute in NS or D5W and run over 15 min
• Max dose: 60 mg/kg/day = 528 mg/day for this child

⚠️ IV PCT is preferred over oral/rectal when:

• Child is vomiting or cannot take orally
• Rapid fever control needed post-seizure
• Child is nil by mouth (NBM)

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DNS (Dextrose Normal Saline = 5% Dextrose + 0.9% NaCl)

Maintenance Fluid Calculation (Holliday-Segar Method) for 8.8 kg:

• 4 mL/kg/hr for first 10 kg = 4 × 8.8 = ~35 mL/hr

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Why DNS for a Febrile Child?

⚠️ Important caution: Current evidence (including AAP and WHO guidelines) recommends isotonic fluids (NS or DNS) over hypotonic fluids (0.45% NaCl or 1/5 NS) in hospitalized children to prevent iatrogenic hyponatremia. DNS is isotonic and therefore appropriate.

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Practical IV Order Sheet for This Child

Patient: 18 months, 8.8 kg
Diagnosis: Febrile convulsion

1. IV Fluid: DNS @ 35-37 mL/hr (continuous)

2. IV Paracetamol 132 mg (13.2 mL of 10 mg/mL)
   in 20 mL NS - infuse over 15 min
   Every 6 hourly (when temp >38.5°C or routinely)

3. Monitor: Temperature every 2 hours
            Blood glucose 4-6 hourly
            Input/output chart
            Seizure precautions

4. Identify source of fever (throat, ears, urine, chest)

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Additional Points

• Do not use DNS as the diluent for IV PCT - use a separate 15-min infusion line or piggyback into existing DNS line
• If fever persists despite IV PCT, can alternate with Ibuprofen syrup 10 mg/kg PO/NG every 8 hours (safe after 6 months)
• Tepid sponging (not ice cold water) can be used alongside
• Keep child comfortable; fan if needed
• Once child is accepting orally and afebrile for 24 hours, switch from IV to oral PCM and consider switching DNS to oral hydration

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Empirical Antibiotic Coverage - Febrile Child <18 Months

Core Concept: Risk Stratification First

• Streptococcus pneumoniae (most common in post-Hib vaccine era)
• E. coli / Gram-negative rods (UTI, urosepsis)
• Neisseria meningitidis (meningococcemia)
• Group B Strep / Listeria (more in <3 months)
• Herpes simplex virus (HSV) (neonates, <28 days)

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Age-Based Decision Framework

1. Neonates (0-28 days) - Always start empirical antibiotics

Note: Ceftriaxone is avoided in neonates due to risk of bilirubin displacement.

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2. Infants 1-3 Months (29-90 days) - Risk stratify, most get antibiotics

• Well-appearing, non-toxic
• No focal bacterial infection on exam
• WBC 5,000-15,000/mm³
• ANC <4000/mm³ (or <1500 by some criteria)
• UA negative
• No infiltrate on CXR if obtained
• CSF WBC <8/mm³

• Can observe without antibiotics with close 24h follow-up
• Blood culture must be sent

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3. Infants 3-18 Months - Selective empirical treatment (including this patient)

START Empirical Antibiotics When:

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Do NOT Start Empirical Antibiotics When (for 3-18 months):

• Well-appearing, playful child
• Fully immunized (PCV13, Hib)
• No focal source of infection
• UA negative
• Fever source identified as viral (URTI, roseola, HHV-6)
• WBC <15,000 and ANC <4000

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For This Specific Patient (18 months, febrile convulsion)

Febrile convulsion in 18-month child
           |
    +-----------+
    |           |
Well-appearing  Toxic / meningeal signs
    |                    |
Identify fever source    START Ceftriaxone IV immediately
    |                    100 mg/kg + LP + admit
    |
Viral source (URTI)  -->  No antibiotics
UTI (pyuria on UA)   -->  Ceftriaxone 50 mg/kg OD
Pneumonia on CXR     -->  Ampicillin/Amoxicillin
No source found      -->  Blood culture, close obs 24h
Incomplete immunization --> Ceftriaxone empirically

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Meningitis Coverage - Doses for 8.8 kg Child

Dexamethasone reduces hearing loss and neurological sequelae in bacterial meningitis (especially H. influenzae), but is most beneficial when given before or with the first antibiotic dose.

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Quick Summary

Source: Rosen's Emergency Medicine, Febrile Infant chapter; The Harriet Lane Handbook, 23rd Ed.