Postoperative hypertension: a hazard of abrupt cessation of antihypertensive medication in the preoperative period.
D000368:Aged; D006801:Humans; D006973:Hypertension / Q000150:complications*; D008297:Male; D011183:Postoperative Complications; D013375:Substance Withdrawal Syndrome; D013514:Surgical Procedures, Operative