title: Symptomatic bradycardia complicating the use of intravenous dipyridamole for thallium-201 myocardial perfusion imaging.
abstract: Intravenous dipyridamole was given for routine thallium-201 myocardial perfusion imaging. The patient developed chest discomfort followed by cardiovascular collapse with sinus arrest and a nodal escape rhythm at 28 beats per minute. He was rapidly resuscitated without adverse sequelae. A reversible posteroinferior perfusion defect and proximal right coronary artery occlusion were found. Symptomatic bradycardia after dipyridamole may be mediated by ischaemia.
authors.affiliation: National Heart and Lung Institute, London, U.K.
authors.forename: D J
authors.initials: DJ
authors.lastname: Pennell
authors.forename: S R
authors.initials: SR
authors.lastname: Underwood
authors.forename: P J
authors.initials: PJ
authors.lastname: Ell
mesh_terms: D001919:Bradycardia / Q000139:chemically induced*; D003864:Depression, Chemical; D004176:Dipyridamole / Q000008:administration & dosage / Q000009:adverse effects*; D006321:Heart / Q000000981:diagnostic imaging*; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D007262:Infusions, Intravenous; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging; D013794:Thallium Radioisotopes
chemical_list: D013794:Thallium Radioisotopes; D004176:Dipyridamole