Biomedical subjects

N Hibri

Publications and source records attributed to N Hibri.

4 recordsLinked to original sources

PubMed1990

Loss of the insular ribbon: another early CT sign of acute middle cerebral artery infarction.

Although computed tomography (CT) remains the most frequently used imaging examination in acute cerebral infarction, its sensitivity for early detection of strokes remains limited. In middle cerebral artery (MCA) strokes less than 6 hours old, loss of definition of the gray-white interface in the lateral margins of the insula ("insular ribbon") was observed. The acute and subacute CT findings in 11 retrospective and 16 prospective patients are presented. Loss of the insular ribbon was detected in 12 of the prospective cases and in all 11 retrospective cases. The insular ribbon is supplied by the insular segment of the MCA and its claustral branches. With cessation of MCA flow, the insular ribbon becomes the region most distal from the anterior and posterior cerebral collateral circulations. Consequently, the insular ribbon effectively becomes a watershed arterial zone. Loss of the insular ribbon is thus a reflection of acute edema due to infarction. Loss of the insular ribbon appears to be another frequent and reliable finding in acute MCA stroke.

Aged↗

PubMed1983

Benign intracranial hypertension, monoclonal gammopathy, and superior sagittal sinus thrombosis.

We report a case of benign intracranial hypertension associated with monoclonal gammopathy. The course was complicated by superior sagittal sinus thrombosis which we believe to be related to acetazolamide therapy. Response to volume expansion with colloid and crystalloid solutions was dramatic.

Acetazolamide↗

PubMed1980

Abnormalities of the cranio-vertebral junction with cervico-medullary compression. A rational approach to surgical treatment in children.

8 children with cranio-vertebral abnormalities and neurological deficits are reviewed. The specific treatment is dependent on etiology, mechanisms of compression, and whether the bony abnormality can be reduced to its normal position. Irreducible ventral compression of the cervico-medullary junction was relieved by transoral removal of the odontoid-clivus complex in 3 patients. Primary posterior decompression was done in 4 children with dorsal encroachment. A reducible C1-C2 dislocation in 1 child with juvenile rheumatoid arthritis underwent primary posterior fusion. A detailed surgical physiological approach is described.

Adolescent↗

PubMedDate not supplied

Recurrent subtemporal epidural hematoma with second, third and fourth cranial nerve compression.

A patient who was admitted with visual loss and, third and fourth cranial nerve paresis as only evidence of a recurrent epidural hematoma is presented. A review of some of the mechanisms suggested in the literature to explain the etiology of ocular signs in the presence of extracerebral collections is offered. We propose an additional possible mechanism and review the anatomical explanation for the development of these symptoms.

Adult↗