<prompt> A young man having pheochromocytoma has BP of 18892 mm Hg and a hematocrit of around 50. Pulmonary function tests and renal functions are normal. His catecholamines are elevated. Which of the following drugs should not be included in the anesthesia protocol?DesfluraneFentanylHalothaneMidazolam  <response>: Halothane sensitizes the hea to arrhythmogenic action of catecholamines. In pheochromocytoma, there are elevated levels of catecholamines. Therefore, halothane should not be used in patients with pheochromocytoma. 