Emergency department triage of patients infected with HIV.

Objective: The emergency department (ED) and HIV specialty clinics are primary sources of care for persons infected with HIV. HIV disease may be complicated by vague and complex symptomatology, and determining the degree of illness at triage is often difficult. The goals of this project were to characterize the ED presentation of HIV-related conditions, to develop a clinical decision rule to triage HIV-infected patients, and to validate the rule in clinical practice.

[Management of submacular hemorrhage by tissue plasminogen activator and SF(6) gas injection].

Unlabelled: The formation of platelet-fibrin clots causes degeneration of foveolar photoreceptors by subretinal hemorrhage.

Patients: Twenty-two patients with submacular hemorrhages were treated by intravitreal injection of 50 microg tpa and 0.5 ml SF(6) gas within 1 h.

Impaired function of bipolar cells in the Royal College of Surgeons rat.

The retina of the Royal College of Surgeons (RCS) strain of rat, which is being used as an animal model for human retinal degenerations, has been employed in the study of the function of second order neurons. By about the 33rd postnatal day the dendritic branching of isolated bipolar cells is more sparse than in bipolar cells of the normal rat retina, but their GABA channels are as in the normal rat retina. The normally occurring light-induced distal potassium increase has been used as the indicator of the functional competence of second order neurons in the isolated RCS rat retina.

The c-wave of the electroretinogram possesses a third component from the proximal retina.

ERG and light-induced extracellular potassium ([K+]o) changes have been measured in isolated retinas of both Rana esculenta and Rana temporaria. The conditions of the preparations have been varied. Isolated frog retinas kept receptor side-upward in a moist chamber without perfusion showed the well-known slow PIII in the ERG.