title: Acute beta-blocker withdrawal and exchange by verapamil before percutaneous transluminal angioplasty.
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000009:adverse effects*; D000800:Angioplasty, Balloon; D003329:Coronary Vasospasm / Q000139:chemically induced*; D006801:Humans; D013375:Substance Withdrawal Syndrome / Q000188:drug therapy*; D014700:Verapamil / Q000627:therapeutic use*
chemical_list: D000319:Adrenergic beta-Antagonists; D014700:Verapamil