[Sonographic criteria of acute acalculous cholecystitis.Critical observation of the clinical records of sedated, ventilated and parenterally nourished patients].

After comparing the classical ultrasonographic findings of acute acalculous cholecystitis with our findings on 24 clinical and sonographic followed acute care unit patients, we have to pay attention to the possible reversibility of such phenomena as increased gallbladder wall thickness, low-level echo surrounding the gallbladder and sludge. In our experience, there is no correlation between a negative cholecystokinin stimulation test and an acute acalculous cholecystitis.