The influence of controlled mandatory ventilation (CMV), intermittent mandatory ventilation (IMV) and biphasic intermittent positive airway pressure (BIPAP) on duration of intubation and consumption of analgesics and sedatives. A prospective analysis in 596 patients following adult cardiac surgery - Rathgeber, J; Schorn, B; Falk, V; Kazmaier, S; Spiegel, T; Burchardi, H (Eur J Anaesthesiol, 1997)