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Neonatal enteroviral syndrome refers to severe systemic infection in newborns caused by non-polio enteroviruses (commonly Coxsackievirus B and Echovirus). It typically presents in the first 1–2 weeks of life and can mimic overwhelming sepsis.
Why neonates get severe disease
Perinatal transmission (maternal infection around delivery)
Immature immune response
High viral load → multiorgan involvement
Classic “neonatal enteroviral sepsis syndrome”
Think sepsis + myocarditis + hepatitis:
Common features
Fever or temperature instability
Lethargy, poor feeding
Apnoea
Rash (maculopapular / petechial)
Irritability
Severe manifestations
Myocarditis → tachycardia, shock, arrhythmias
Hepatitis → markedly ↑ AST/ALT, coagulopathy, thrombocytopenia
Meningitis / encephalitis
DIC-like picture
Pulmonary haemorrhage (rare but classic exam point)
Red flags suggesting enterovirus (vs bacterial sepsis)
Very high transaminases early
Low platelets + coagulopathy
Myocarditis in first week
Maternal “flu-like” illness near delivery
Negative bacterial cultures but baby worsening
Investigations (UK practice)
Send PCR for enterovirus:
Blood
CSF (if stable)
Throat swab
Stool
Also:
LFTs (often very high)
Coagulation profile (PT prolonged)
Troponin / BNP if myocarditis suspected
Echo (for ventricular dysfunction)
Management (NHS approach)
Supportive + treat like sepsis until proven otherwise
Broad-spectrum IV antibiotics initially
PICU support if shock
Inotropes for myocarditis
Correct coagulopathy (FFP, cryo)
Ventilatory support if needed
Specific therapy
IVIG sometimes used (evidence mixed but common in severe disease)
No routinely recommended antiviral (pleconaril not standard UK use)
Prognosis
Mild meningitis → usually good outcome
Fulminant hepatitis/myocarditis → high mortality (up to 30–50%)
Survivors usually recover cardiac function
Exam / viva one-liner
Neonatal enteroviral syndrome = early neonatal sepsis with myocarditis, hepatitis, coagulopathy, and negative cultures — confirm with enterovirus PCR.
If you want, I can also give:
quick differential vs HSV neonatal sepsis
management algorithm
when to give IVIG
Medical Summary – 11-Day-Old Neonate
Reason for Readmission (Day 5)
Excessive weight loss (22.5%)
Lethargy, poor feeding, apnoeic episodes
Bleeding tendency
No vitamin K at birth
Key Problems During Admission
Late-onset sepsis with DIC
Severe thrombocytopenia (platelets as low as 7 ×10⁹/L)
Lethargy and poor feeding
Peripheral hypoperfusion (right hand; arterial line related)
Difficult IV access
Feed intolerance
Deranged liver function tests
Generalised puffiness/oedema
Enterovirus positive (nasopharyngeal aspirate)
Elevated BNP and troponin (concern for myocardial involvement)
Initial Management
10 ml/kg 0.9% saline bolus then IV maintenance (subsequently stopped)
Two doses vitamin K given
Platelet transfusion
Long line inserted
Broad sepsis workup and monitoring
Investigations
CRP 10
Hb 185 g/L
WBC 28 → 24 ×10⁹/L (neutrophils 18 → 14)
Platelets 30 → 10 ×10⁹/L (nadir 7)
Sodium 140 → 144 mmol/L
Phosphate 1.5 → 1.3 mmol/L
INR 8.9 → 1.2 after treatment
Blood cultures negative at 36 hrs
Ammonia 43
CXR: no acute disease
Cranial USS ×2: normal
MRI head: normal
TORCH: negative
Abdominal USS: gallbladder wall thickening
BNP markedly elevated (22992)
Troponin elevated (5452)
Clinical Course
Platelets improved to 51 ×10⁹/L post-transfusion
Coagulopathy corrected
Vitamin K deficiency resolved
Ongoing monitoring for myocardial involvement and liver dysfunction
Ongoing / Planned
Repeat FBC and coagulation
Monitor urine output and blood pressure
Daily weights and head circumference
Monitor perfusion (consider topical vasodilator if required)
HSV PCR (skin and serum)
Viral PCRs including adenovirus, CMV, enterovirus
Lumbar puncture when platelets >100 ×10⁹/L
Continue cefotaxime (minimum 10 days)
Continue aciclovir pending HSV results
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