When heart patients need non-heart operations.
D000319:Adrenergic beta-Antagonists / Q000627:therapeutic use*; D001262:Atenolol / Q000627:therapeutic use*; D003327:Coronary Disease / Q000175:diagnosis*; D006331:Heart Diseases / Q000517:prevention & control*; D006801:Humans; D011183:Postoperative Complications / Q000517:prevention & control; D011292:Premedication
D000319:Adrenergic beta-Antagonists; D001262:Atenolol