NICU — Rapid Genomic Sequencing
for critically ill neonates with suspected genetic conditions using rapid exome/genome sequencing
System Profile
Yield Comparison
Clinical Dimensions
- Critically ill neonate with suspected genetic etiology
- Multiple congenital anomalies
- Unexplained organ failure
- Metabolic crisis in first days of life
- Hypotonia or seizures from birth
- Inborn errors of metabolism presenting in neonatal period
- Congenital myopathies and muscular dystrophies
- Severe combined immunodeficiency (SCID)
- Neonatal epileptic encephalopathy
- Multiple congenital anomaly syndromes
- Skeletal dysplasias
- Congenital heart disease with extracardiac features
- Neonatal respiratory failure of genetic origin
- Dysmorphic features
- Severe hypotonia
- Respiratory failure requiring ventilation
- Metabolic acidosis
- Persistent seizures
- Ambiguous genitalia
- Hydrops fetalis
- Poor feeding requiring tube feeds
- Apneic episodes
- Temperature instability
- Persistent unexplained illness
- Metabolic panel with acidosis or hyperammonemia
- Elevated lactate
- Abnormal newborn screen
- Abnormal acylcarnitine or amino acid profiles
- Rapid trio exome or genome sequencing
- Brain MRI showing structural anomalies
- Echocardiogram for congenital heart disease
- Renal ultrasound for CAKUT
- Skeletal survey for dysplasias
- Continuous EEG for neonatal seizures
- Amplitude-integrated EEG
- Echocardiography
- Empiric anticonvulsants for neonatal seizures
- Metabolic cocktails pending diagnosis
- Prostaglandin for ductal-dependent cardiac lesions
- Emergent cardiac surgery for critical CHD
- VP shunt for hydrocephalus
- Tracheostomy for airway anomalies
- Mechanical ventilation
- ECMO
- Continuous monitoring
- Neonatology
- Clinical genetics (rapid consult)
- Genetic counseling
- Pediatric subspecialists as indicated
- Consanguinity
- Previous neonatal or infant deaths
- Known genetic conditions in family
- Recurrent pregnancy loss
- Abnormal prenatal findings (polyhydramnios, IUGR, structural anomalies)
- Non-immune hydrops fetalis
- Reduced fetal movement
- Abnormal prenatal genetic screening
Red Flag Combinations
Clinical patterns that should prompt consideration of genetic testing
Seizures + metabolic crisis + hypotonia in neonate
Multiple congenital anomalies + failure to thrive
Respiratory failure + dysmorphic features
Hydrops + anemia + hepatosplenomegaly
Cardiac + renal + skeletal anomalies
Screening Decision Pathway
When to consider genetic testing for nicu — rapid genomic sequencing presentations
graph TD
START["Patient Presents with\nNICU — Rapid Genomic Sequencing Concerns"] --> SCREEN{"Screen for\nRed Flags"}
SCREEN --> RF1["Critically ill neonate without clear acquired etio..."]
SCREEN --> RF2["Abnormal newborn screen requiring confirmation"]
SCREEN --> RF3["Multiple congenital anomalies at birth"]
RF1 --> EVAL{"Multiple\nFlags Present?"}
RF2 --> EVAL{"Multiple\nFlags Present?"}
RF3 --> EVAL{"Multiple\nFlags Present?"}
EVAL -->|Yes| TEST["Order Genetic Testing\n(ES/GS)"]
EVAL -->|No| MONITOR["Continue Monitoring\nRe-evaluate if New Findings"]
TEST --> DX["Molecular Diagnosis\n34-59% yield"]
style TEST fill:#dcfce7,stroke:#16a34a,color:#14532d
style DX fill:#bbf7d0,stroke:#16a34a,color:#14532d
style MONITOR fill:#fef3c7,stroke:#d97706,color:#92400e
Screening Red Flags
Findings on routine screening that may indicate genetic etiology
- Critically ill neonate without clear acquired etiology
- Abnormal newborn screen requiring confirmation
- Multiple congenital anomalies at birth
Exome / Genome Sequencing Indications
Clinical scenarios supporting ES/GS as a diagnostic approach
- Critically ill neonate with suspected genetic etiology
- Multiple congenital anomalies without syndromic diagnosis
- Neonatal metabolic crisis with unclear etiology
- Neonatal seizures unresponsive to first-line treatment
- Severe hypotonia of unknown cause in neonate
- Congenital heart disease with extracardiac anomalies
- Abnormal newborn screen requiring rapid confirmation
- Family history of neonatal/infant death with suspected genetic cause
- Non-immune hydrops fetalis
- Suspected primary immunodeficiency in neonate
- Unexplained respiratory failure in term neonate
Updated: 2026-02-25
Curated by: human
Status: human reviewed