title: Exacerbation of variant angina by metoprolol resulting in syncope due to transient atrioventricular block.
authors.forename: Stavros G
authors.initials: SG
authors.lastname: Drakos
authors.forename: Maria I
authors.initials: MI
authors.lastname: Anastasiou-Nana
authors.forename: John N
authors.initials: JN
authors.lastname: Nanas
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000009:adverse effects*; D000788:Angina Pectoris, Variant / Q000139:chemically induced / Q000150:complications*; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000150:complications* / Q000188:drug therapy; D006801:Humans; D008790:Metoprolol / Q000009:adverse effects*; D008875:Middle Aged
chemical_list: D000319:Adrenergic beta-Antagonists; D008790:Metoprolol