N Engl J Med 2000; 342:1471-1477 The transition from mechanical ventilator support to spontaneous breathing has traditionally been called weaning. Most efforts to expedite weaning have focused on ...

Weaning with intermittent mandatory ventilation (IMV) or synchronized IMV (SIMV) occurs by reducing the ventilatory rate. With pressure-support (PS) ventilation, the inspiratory pressure is ...

According to sources, the primary problem was likely ice clogging one of the vent lines that carry pressurized gas away from the vehicle. Several attempts were made to melt the ice, but these ...