Immobility occurs when a client is unable to move freely and independently. To answer questions on positioning, you need to know the hazards of immobility, normal anatomy and physiology, and the terminology for positioning.
Coronary stents are mesh scaffolds that are threaded into arteries and then expanded, usually by inflating a balloon inside the stent, to hold a previously plaque-clogged vessel open. Stents are often employed following angioplasty, in which an unstented balloon is first inflated to widen a clogged or narrowed artery; the stent is then inserted and expanded by another balloon to keep the vessel from renarrowing. Direct stenting [above] opens the artery and implants the stent in one step.