Air trapping following coronary artery bypass surgery.

Communications to the Editor infusion of fluid, in our experience, even 5 to 10 mg/kg cannot always be administered due to the development ofhypotension and cardiovascular depression during the infusion. This could be explained by the fact that the typical neurosurgical patient requiring pentobarbital coma is significantly dehydrated by fluid restriction, mannitol administration, and diuretic therapy in an attempt to reduce intracranial pressure. In addition, these patients are frequently old, may have some septic process, and may have some degree of myocardial impairment.