Publikationsserver der RWTH Aachen University
Sonographie des Sehnerven zum Ausschluß erhöhten Hirndrucks bei Kindern
Abstract
dc:descriptionAim: Increased intracranial pressure (IICP) leads to a sonographically measurable enlargement of the optic nerve. Aim of this study was to determine the value of this method in routine diagnostic of raised intracranial pressure. Main emphasis in this case was laid on the examination of possible influencing variables as well as the setting of a diagnostic limit by means of the investigated quality criterions. Patients & Methods: A total number of 509 children were examined under the clinical suspicion of IICP. Therefore, the optic nerve was depicted through the closed eye in an axial cut by B-mode sonography and measured at its widest point. The nerve sheath and the optic nerve papilla were also evaluated. Results: Out of 483 evalued examinations, IICP was excluded for 466 children; the mean optic nerve diameter in this group was 3.4 mm ± 0,5 mm. For 17 children with proven IICP the mean diameter of the optic nerve was 5.6 mm ± 0.9 mm. Significant correlation between various influencing variables could not be found. For a limit of the optic nerve diameter set at 4.5 mm, the sensitivity was 94.1 %; the specifity 93.1 %. Conclusion: Sonography of the optic nerve is a simple and uncomplicated method for the diagnosis of IICP; however, it cannot achieve final diagnostic certainty. Because of a wide range as well as a slight age dependency a limit range between 4.0 mm and 4.5 mm is recommended.
Degree
thesis:*- Grantor dc:publisher
- Publikationsserver der RWTH Aachen University
- Year dc:date
- 2003
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Scharf, Manuel
- Contributors dc:contributor
-
- Alzen, Gerhard
Subjects
dc:subject × 5Rights
dc:rights- Statement dc:rights
-
- info:eu-repo/semantics/openAccess
- Language dc:language
- ger