The MRI appearance of the optic nerve sheath following fenestration for benign intracranial hypertension

1998 ◽  
Vol 8 (7) ◽  
pp. 1193-1196 ◽  
Author(s):  
D. Sallomi ◽  
H. Taylor ◽  
J. Hibbert ◽  
M. D. Sanders ◽  
D. J. Spalton ◽  
...  
Keyword(s):  
Optic Nerve ◽  
Intracranial Hypertension ◽  
Optic Nerve Sheath ◽  
Benign Intracranial Hypertension ◽  
Nerve Sheath

Intracranial pressure following optic nerve decompression for benign intracranial hypertension

1981 ◽  
Vol 55 (3) ◽  
pp. 453-456 ◽  
Author(s):  
Andrew H. Kaye ◽  
J. E. K. Galbraith ◽  
John King
Keyword(s):  
Optic Nerve ◽  
Intracranial Pressure ◽  
Intracranial Hypertension ◽  
Continuous Recording ◽  
Optic Nerve Sheath ◽  
Benign Intracranial Hypertension ◽  
Content Type ◽  
Nerve Sheath ◽  
Before And After ◽  
Fine Print

✓ The authors report the case of a patient with benign intracranial hypertension and severe papilledema, who underwent surgery for bilateral optic nerve sheath decompression. No change in the intracranial pressure (ICP) was seen during continuous recording performed before and after the operation. This case supports the contention that the decrease in papilledema and the visual improvements seen following this operation are more likely to be due to decrease in optic nerve sheath pressure than to a generalized decrease in ICP, as suggested by other authors.

Optic nerve sheath diameter ultrasonography at admission as a predictor of intracranial hypertension in traumatic brain injured patients: a prospective observational study

2020 ◽  
Vol 132 (4) ◽  
pp. 1279-1285 ◽  
Author(s):  
Chiara Robba ◽  
Joseph Donnelly ◽  
Danilo Cardim ◽  
Tamara Tajsic ◽  
Manuel Cabeleira ◽  
...  
Keyword(s):  
Optic Nerve ◽  
Intracranial Hypertension ◽  
Optic Nerve Sheath Diameter ◽  
Optic Nerve Sheath ◽  
Reactivity Index ◽  
Nerve Sheath ◽  
Secondary Injuries ◽  
Patients At Risk ◽  
Severe Tbi ◽  
Injured Patients

OBJECTIVEIntracranial hypertension and impaired cerebral autoregulation are common causes of secondary injuries in patients with traumatic brain injury (TBI). The primary outcome of this study was to assess whether a noninvasive method to estimate intracranial pressure (ICP) based on the ultrasonography of the optic nerve sheath diameter (ONSD) measured at the time of neurocritical care unit (NCCU) admission is correlated with the mean ICP during NCCU stay. Secondary outcomes were to assess whether ONSD is correlated with the dose of ICP > 20 mm Hg and impaired autoregulation during NCCU stay and with instantaneous ICP and whether ONSD is associated with NCCU mortality.METHODSThis prospective observational monocentric study included adults with severe TBI. ONSD was measured at NCCU admission, immediately after invasive ICP insertion. ONSD-predicted noninvasive ICP (nICPONSD) was calculated according the formula: nICPONSD= 5 × ONSD − 14 (nICPONSDin mm Hg, ONSD in mm). Autoregulation was measured using the pressure reactivity index (PRx).RESULTSIn total, 100 patients were included in this study. ONSD was significantly correlated with mean ICP (r = 0.46, p < 0.0001), with mean PRx (r = 0.21, p = 0.04), and with the dose of ICP > 20 mm Hg during NCCU stay (r = 0.49, p < 0.0001). Admission nICPONSDwas shown to be significantly correlated with instantaneous ICP (r = 0.85, p < 0.001). ONSD at admission was significantly correlated with NCCU mortality (p = 0.02).CONCLUSIONSONSD measured at NCCU admission can give important information about patients at risk of developing intracranial hypertension and impaired autoregulation. ONSD examination could be useful to screen patients at admission to determine who would benefit from further invasive ICP monitoring.

Sign in / Sign up

Export Citation Format

Share Document