Blood pressure control with fenoldopam during excision of a pheochromocytoma.

minimize the risk of barotrauma, the following precautions are recommended. multiple distal side holes also may decrease the pressure delivered at the distal end, minimize the catheter whip, and center the catheter within the trachea during jet ventilation.3 1. The patient must be adequately preoxygenated and hyperventilated by the original endotracheal tube using 100% oxygen. 2. An exchange catheter must be selected that is proportional to the size of the endotracheal tube. If the catheter meets resistance, it should be withdrawn slightly. 3. The clinician should consider maintaining oxygenation by administering a low flow of oxygen (1 or 2 l/min) z~ia the lumen of the exchange catheter. This can provide adequate apneic diffusion oxygenation, because oxygen consumption in adults is only approximately 250 ml/min. Jet ventilation may not be necessary during the brief period of tube exchange, because the carbon dioxide tension increases during References