[Acute obstruction of an anesthetic gas evacuation system. Ventilation with a Servo Ventilator 900D].

During aorto-coronary bypass surgery acute expiratory airway obstruction occurred in two patients during controlled ventilation with a Servo D ventilator (Siemens Elema) in combination with a Servo EVAC 180 gas evacuation system. In this system expiratory volume passes from the ventilator to the reservoir bag. Distension of the bag will open the valve to the receiving unit by vertical dislocation of the valve spring.

Role of phospholipase A in multiorgan failure with special reference to ARDS and acute renal failure (ARF).

In 150 patients admitted to an ICU phospholipase A serum activity was measured daily. The correlation between the increase of phospholipase A serum activity and the severity of adult respiratory distress syndrome (ARDS) and the incidence of acute renal failure (ARF), two important target systems in multiple organ failure (MOF) syndrome was studied as well as the efficacy of a treatment with phospholipase A inhibitors (methylprednisolone and dexamethasone). The results of this study show that there exists a statistically significant correlation between the increase of phospholipase A activity and the incidence of multiple organ failure.