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Biomedical subjects

S Hamby

Publications and source records attributed to S Hamby.

7 recordsLinked to original sources
PubMed1996

The correlation between neuropsychological and neuroanatomic changes over time in asymptomatic and symptomatic HIV-1-infected individuals.

To determine the relationship between neuroanatomic and neuropsychological changes in both asymptomatic and symptomatic HIV-1-infected individuals, we conducted a longitudinal study of 47 HIV-infected individuals, 15 of whom were asymptomatic and 32 of whom had either AIDS-related complex or AIDS. To measure neuroanatomic change over a 30-month period, we conducted quantitative MRI measures of bicaudate/brain ratio (BCR) and bifrontal/ brain ratio. A comparison of change over time between BCR and neuropsychological performance showed a correlation between increase in atrophy and worsening in certain cognitive functions. The correlation held for both asymptomatic and symptomatic groups, with more pronounced changes in the symptomatic group.

AIDS Dementia Complex↗
PubMed1993

Neuro-ophthalmic complications of intracranial catheters.

We report four patients who sustained direct injury to the brain after insertion of intraventricular shunts and pressure monitoring lines, which resulted in permanent neuro-ophthalmic deficits. These included hemianopsia from an optic tract lesion, esotropia and residual bilateral facial paresis from dorsal pontine injury, unilateral blindness from damage to the optic nerve, and dorsal midbrain syndrome from catheter compression in the region of the posterior commissure. Although presumably rare, such injuries should be considered in diagnosing patients with neuro-ophthalmic complaints after insertion of such devices.

Adult↗
PubMed1985

Orbital compliance in Graves' eye disease.

Thirty-three patients with Graves' eye disease (GED) and 68 normal subjects had their orbital compliance measured by determining the force generated on retropulsing the eye and also estimated on digital retropulsion, and their eye position determined with an exophthalmometer. Patients with compressive optic neuropathy showed significantly higher mean forward force on retropulsion than other Graves' eye disease patients or normal subjects, supporting the theory that the tissue is compressed in these orbits. There is a suggestion that orbital compliance testing of a GED patient without compressive optic neuropathy may be of value in predicting the risk of the patient developing compressive optic neuropathy. There is no association between the force on ocular retropulsion and the exophthalmometer reading. The digital estimation of the resistance to retropulsion did not reliably suggest the measured forces.

Compliance↗
PubMed1974

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Public Health Nursing↗