This is a clinical trial to determine the extent to which ultrasound-assisted lumbar puncture using a standardized procedure, including use of ultrasound to ascertain the presence of cerebrospinal fluid (CSF) at L3 - L5 and the optimal needle insertion distance, increases the acquisition rate of CSF that is interpretable for patient management.
- Neonates and infants (< 12 months)
Hemodynamically stable
Undergoing a lumbar puncture for diagnostic testing
- Infants > 12 months and 1 day
Signs of clinical instability
Known spinal anomalies (e.g., spina bifida, meningomyelocele) or previous spinal surgery