Case Report of the Unusual Presentation of Stridor in an Elderly Patient Following a Cervical Fracture.

Unlabelled: This report describes a unique presentation of stridor in an elderly patient who presented to the emergency department (ED) with neck and back pain after a fall down a flight of stairs. The patient had no airway issues on initial evaluation in the resuscitation room, but developed stridor and respiratory distress after returning from imaging. The unexpected stridor and respiratory distress were alleviated with basic airway maneuvers that included airway repositioning and a breathing treatment.

Architecture, persistence and dissolution of a 20 to 45 year old trichloroethene DNAPL source zone.

A detailed field-scale investigation of processes controlling the architecture, persistence and dissolution of a 20 to 45year old trichloroethene (TCE) dense non-aqueous phase liquid (DNAPL) source zone located within a heterogeneous sand/gravel aquifer at a UK industrial site is presented. The source zone was partially enclosed by a 3-sided cell that allowed detailed longitudinal/fence transect monitoring along/across a controlled streamtube of flow induced by an extraction well positioned at the cell closed end. Integrated analysis of high-resolution DNAPL saturation (Sn) (from cores), dissolved-phase plume concentration (from multilevel samplers), tracer test and permeability datasets was undertaken.

Review of unsaturated-zone transport and attenuation of volatile organic compound (VOC) plumes leached from shallow source zones.

Reliable prediction of the unsaturated zone transport and attenuation of dissolved-phase VOC (volatile organic compound) plumes leached from shallow source zones is a complex, multi-process, environmental problem. It is an important problem as sources, which include solid-waste landfills, aqueous-phase liquid discharge lagoons and NAPL releases partially penetrating the unsaturated zone, may persist for decades. Natural attenuation processes operating in the unsaturated zone that, uniquely for VOCs includes volatilisation, may, however, serve to protect underlying groundwater and potentially reduce the need for expensive remedial actions.