title: Rapid cyclic fluctuations of blood pressure associated with treatment of pheochromocytoma by labetalol.
abstract: Rapid cyclic fluctuations of blood pressure in patients with a pheochromocytoma have rarely been reported. The suitable conditions to induce this phenomenon are not adequately known. We report here a patient with an adrenal pheochromocytoma who showed this phenomenon after oral administration of labetalol.
mesh_terms: D000284:Administration, Oral; D000310:Adrenal Gland Neoplasms / Q000188:drug therapy / Q000503:physiopathology*; D001794:Blood Pressure / Q000187:drug effects*; D006801:Humans; D007741:Labetalol / Q000008:administration & dosage* / Q000494:pharmacology; D008297:Male; D008875:Middle Aged; D010507:Periodicity; D010673:Pheochromocytoma / Q000188:drug therapy / Q000503:physiopathology*
chemical_list: D007741:Labetalol