Within the cerebrospinal fluid.
Glossary
WP Glossary
IOM
IntraOperative Monitoring. Also referred to as intraoperative neurophysiological monitoring or intraoperative physiologic monitoring. This is the use of evoked physiological potentials (motor evoked potentials, sensory evoked potentials, brainstem ausitory evoked potentials, electromyography, etc.) to follow the function of the nervous system during surgery.
IPSS
The International Pediatric Stroke Study. A registry that as of 2024 has enrolled over 8000 children who have experienced strokes. Clinicians, scientists and researchers from over 100 institutions in 34 countries particiapte in the registry.
IQ
Intellectual Quotient
IT
Intrathecal – within the cerebrospinal fluid.
IV
Intravenous
IVH
Intraventricular hemorrhage. Typically used when speaking of bleeding within the brain of an infant born prematurely. Specifically, it is bleeding from the subependymal matrix into the ventricles. The smooth muscles of the brain’s arterioles do not develop until late in gestation, resulting in this vulnerability. This condition can cause hydrocephalus and it can be associated with injury to the brain’s parenchyma. In other cases there can be no associated symptoms or sequelae. This injury occurs early in the third trimester and can be associated with cerebral palsy.
JPA
Juvenile Pilocytic Astrocytoma – benign, slow growing tumors arising within the central nervous system. They commonly contain cysts and enhance with contrasting agents on imaging.
JRA
Juvenile rheumatoid arthritis – commonly referred to as JIA or Juvenile idiopathic arthritis. This is a childhood arthritis that may be transient and self-limited or chronic. It is an autoimmune disorder that commonly occurs between 7 to 12 of age, but can occur at any time in childhood or adolescence.
junctional zone
The point where the skin meets the dura in a myelomeningocele. Its identification serves as a landmark in the surgical repair of a myelomeningocele, allowing protection of underlying nerves and maximal preservation of dura to be used in the repair of the defect.
