Systematic Neurological Examination in Infants – Evidence‑Based Recommendations
1. Core Assessment Tools
- General Movements Assessment (Prechtl Qualitative) identifies motor dysfunction with 95‑98 % predictive accuracy for cerebral palsy in infants < 5 months corrected age. 1
- Hammersmith Infant Neurological Examination (HINE)
- Test of Infant Motor Performance (TIMP) can be used as an alternative motor assessment when General Movements Assessment is unavailable. 1
2. Age‑Specific HINE Thresholds (Infants 5–24 months)
| Age (months) | HINE Score | Interpretation | Evidence |
|---|---|---|---|
| 6, 9, 12 | < 73 | High risk for cerebral palsy | [3][2] |
| Any | < 40 | Almost always indicates cerebral palsy | [3] |
| Any | 50‑73 | Suggests unilateral CP; 95‑99 % will achieve independent walking | [2] |
| Any | < 50 | Suggests bilateral CP | [2] |
3. Additional Motor Screening Instruments
- Developmental Assessment of Young Children (DAYC) – 89 % predictive of cerebral palsy; can be completed via parent report. [3][2]
- Alberta Infant Motor Scale (AIMS) – 86 % predictive of abnormal motor outcome. 3
- Movement Assessment of Infants (MAI) – 73 % predictive of cerebral palsy. 3
4. Neuroimaging
- Term‑age MRI detects abnormal neuroanatomy in motor‑related brain regions with 86‑89 % sensitivity when performed safely (often requiring sedation after 6 weeks). [1][2]3
- MRI prognostic patterns:
5. Red‑Flag Clinical Findings Requiring Immediate Standardized Assessment
- Hand‑function asymmetry at any age. 2
- Inability to bear weight through the plantar surface of the feet. 2
6. High‑Risk Populations for Systematic Screening
- Preterm infants. [1][4]
- Infants with neonatal encephalopathy. 2
- Infants with congenital birth defects. 2
- Infants admitted to a neonatal intensive care unit (NICU). 4
7. Essential Examination Components
Motor Function
- Assessment of muscle tone (hypotonia, hypertonia, spasticity). 2
- Evaluation of spontaneous movement quality and quantity. 2
- Observation of posture, positioning, strength and age‑appropriate coordination. 2
Sensory Function
- Tactile response, visual tracking/fixation, and auditory responsiveness. 2
Cranial Nerve & Primitive Reflexes
- Facial symmetry and movement (CN VII). 2
- Sucking, swallowing (CN IX, X, XII) and gag reflex (CN IX, X). 2
- Palmar and plantar grasp reflexes. 2
8. Documentation Requirements
- Record prenatal, perinatal, and postnatal risk factors and developmental milestone achievement. 2
- Include any previous hospitalizations or complications. 4
9. Timing of Re‑Examination
- Neonates (37 weeks gestation to 30 days old) – repeat assessment after 24 hours. 4
- Infants > 30 days (up to 18 years) – repeat after 12 hours. 4
- Defer assessment 24‑48 hours (or longer) after cardiopulmonary resuscitation or severe acute brain injury. 4
10. Medication Effects on Examination
- Discontinue sedating anticonvulsants for an appropriate elimination‑half‑life period before the exam. 4
- Verify therapeutic drug levels; avoid making a neurological diagnosis when supratherapeutic or high‑therapeutic sedative levels are present. 4
- Low‑to‑mid therapeutic levels are unlikely to affect examination findings. 4
11. Practical Examination Strategies
- Perform the exam when the infant is alert and calm. 1
- Use toys and visual stimuli to assess tracking and attention. 2
- Observe spontaneous movements before handling the infant. 2
- Begin with least disturbing components (observation, cranial nerves) and finish with more stimulating tests. 2
12. Prognostic Prediction When Abnormalities Detected
- HINE scores 40‑60 at 3‑6 months predict GMFCS levels I‑II (milder functional impairment). [3][2]
- HINE scores < 40 predict GMFCS levels III‑V (more severe impairment). 2