An exploration of post-traumatic stress disorder in emergency nurses following Hurricane Katrina.

Introduction: As a result of Hurricane Katrina on August 29, 2005, ED nurses were faced with chaos during and after the storm. The purpose of this pilot study was to determine if emergency nurses have experienced signs and symptoms of post-traumatic stress disorder (PTSD) as a result of working in an emergency department of the New Orleans metropolitan area during and immediately after Hurricane Katrina.

Methods: The research identifies if the nurses perceived satisfaction with measures administrators took to provide Critical Incident Stress Management (CISM).

Spread of herpes simplex virus type 1 in the central nervous system during experimentally reactivated encephalitis.

Because many of the features of reactivated herpes simplex virus type 1 (HSV-1) central nervous systems (CNS) infections in vivo are incompletely understood, we used an animal model to study the development of the morphological, ultrastructural, radiological and immunological changes which occurred during acute and experimentally reactivated diseases. Rabbits were intranasally inoculated with HSV-1, and their latent trigeminal ganglionic and CNS infections were reactivated by intravenous injection of cyclophosphamide and dexamethasone. Technetium brain scans were performed to localize areas of blood-brain barrier breakdown, and cerebrospinal fluid (CSF) was analysed for IgG content by radial immunodiffusion assays.

Porphyrin-laser photodynamic induction of focal brain necrosis.

A noninvasive photodynamic method has been developed to produce focal brain necrosis using porphyrin activated in vivo with laser light. After peripheral injection of the photosensitive porphyrin derivative, Photofrin I, mice were irradiated on the posterior lateral aspect of the head through the intact depilated scalp with 632 nm argon-dye laser light. Animals were studied at one, two and seven days after irradiation.