ABSTRACT
The available modes on mechanical ventilators have markedly expanded over the last 20 years. Before 1980 ICU ventilators provided only volume-targeted modes. Today’s newest mechanical ventilators not only incorporate modes that are volume targeted but also provide modes that are pressure targeted as well as a new group of modes most of which are considered combined pressure-and volume -targeted modes. Because with all of these modes feedback regarding the actual ventilatory pattern, they result in automatic adjustment of the way gas is delivered, these modes may more precisely be called closed-loop, computer-controlled modes of ventilation. This chapter will address global differences between pressure-and volume-targeted modes, all of the standard modes of ventilation and the newest computer -controlled modes of ventilation. Where possible, indications for each mode will be highlighted; however, with many modes few or no data are available to guide the choice of mode.
