Snap Review: Definition of. a Pressure Ulcer--. â¢ A pressure ulcer is localized injury to the skin and/or underlying tissue. usually over a bony prominence, as a result of pressure, or pressure in. combination with shear and/or friction.
Apple Indeed Replacing Recalled iPod Nano Units with Current-Generation Models. Just hours after we reported that Apple appeared to have begun shipping out current-generation iPod nanos as replacements for recalled first-generation units, users are beginning to report in that they are indeed receiving the current models.
List of iPod models. From Wikipedia, the free encyclopedia. The Apple iPod line has been upgraded many times, and each significant revision is called a generation. Only the most recent generation and refurbished units of previous generations of the iPod line are available from Apple for each model (classic, nano, shuffle, touch).