title: False-positive Tc-99m sestamibi SPECT in a patient with left bundle branch block.
abstract: A 37-year-old man with atypical chest pain and complete left bundle branch block showed a marked exercise induced septal defect on Tc-99m sestamibi stress testing. A repeat examination at rest the next day revealed complete reversal of the previous septal defect. Coronary angiography two days later showed a normal coronary artery system. Left bundle branch block has been associated with false-positive results of exercise (and more recently, dipyridamole) TI-201 examinations for septal ischemia. The case presented here may be the first reported example of a false positive Tc-99m sestamibi examination for septal ischemia in the presence of left bundle block.
authors.affiliation: Department of Radiology, Tulane University, New Orleans, Louisiana.
authors.forename: R J
authors.initials: RJ
authors.lastname: Campeau
authors.forename: O M
authors.initials: OM
authors.lastname: Garcia
authors.forename: R
authors.initials: R
authors.lastname: Colon
authors.forename: M
authors.initials: M
authors.lastname: Agusala
authors.forename: O A
authors.initials: OA
authors.lastname: Correa
mesh_terms: D000328:Adult; D002037:Bundle-Branch Block / Q000000981:diagnostic imaging*; D004562:Electrocardiography; D005080:Exercise Test; D005189:False Positive Reactions; D006321:Heart / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D017202:Myocardial Ischemia / Q000000981:diagnostic imaging*; D017256:Technetium Tc 99m Sestamibi; D015899:Tomography, Emission-Computed, Single-Photon
chemical_list: D017256:Technetium Tc 99m Sestamibi