Measurement of optic nerve sheath diameter by ultrasound: a means of detecting acute raised intracranial pressure in hydrocephalus
| Autor: | W D Newman, A.S. Hollman, Gordon N. Dutton, R. Carachi |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
medicine.medical_specialty
Optic nerve sheath Neurology genetic structures Adolescent Intracranial Pressure Infant Newborn Diseases Raised intracranial pressure Central nervous system disease Cellular and Molecular Neuroscience Medicine Humans Child Intracranial pressure Ultrasonography integumentary system business.industry Ultrasound Age Factors Infant Newborn Infant Optic Nerve medicine.disease Sensory Systems eye diseases Hydrocephalus Surgery nervous system diseases Ophthalmology Child Preschool Optic nerve Radiology business Scientific Correspondence |
| Zdroj: | The British journal of ophthalmology. 86(10) |
| ISSN: | 0007-1161 |
| Popis: | Aim: To evaluate the utility of measuring the optic nerve sheath diameter in children with shunted hydrocephalus, suspected of having raised intracranial pressure. Methods: 23 children with shunted hydrocephalus were examined, six had well controlled ICP, 17 however manifested symptoms suggestive of intracranial hypertension. A clinical history was taken from all patients and their parents or carers. The shunt valve was examined clinically, and signs of raised intracranial pressure were sought. Ultrasound examination was performed in both eyes to measure the optic nerve sheath diameters 3 mm behind the globe. These measurements were compared with control data obtained from 102 children who attended the radiology department for unrelated renal ultrasound examination. Results: Control data suggested that the upper limit of normal for optic nerve sheath diameter is 4.5 mm (measured 3 mm behind the globe) in patients over 1 year of age, and 4.0 mm in children less than 1 year of age. Those patients with functioning ventriculoperitoneal shunts had a mean optic nerve sheath diameter of 2.9 (SD 0.5) mm; those with raised intracranial pressure had a mean optic nerve sheath diameter of 5.6 (0.6) mm (p |
| Databáze: | OpenAIRE |
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