The new generation of mechanical ventilators.

The newest generation of mechanical ventilators has allowed increased flexibility and enhanced mechanical performance. Primary advantages of these units are improved interfacing during spontaneous breathing, improved monitoring capabilities, and increased safety by the addition of apnea/back-up ventilation during all spontaneous breathing modes. The major drawbacks of these units are their operational complexity and the inclusion of a large number of highly sensitive alarms. Finally, in spite of the scope and capabilities of these ventilators, the vast majority of patients can be very capably managed with the "mid-range" ventilators discussed as well as the majority of well maintained older generation ventilators. All the bells and whistles available on top-of-the-line units do not necessarily constitute an improvement in patient care.