Intraoperative bradycardia and postoperative hyperkalemia in patients undergoing endoscopic third ventriculostomy. - Anandh,B.; Madhusudan Reddy,K.R.; Mohanty,A.; Umamaheswara Rao,G.S.; Chandramouli,B.A. (Minim Invas Neurosurg, 2002)