Thallium-201 exercise scintigraphy in patients having complete left bundle branch block with normal coronary arteries

Int J Cardiol. 1987 Jul;16(1):43-6. doi: 10.1016/0167-5273(87)90268-3.

Abstract

Eleven patients with left bundle branch block and chest pain suggestive of coronary arterial disease were analyzed using thallium-201 exercise scintigraphy, M-mode echocardiography and coronary arteriography. The coronary arteries were shown to be normal in all patients. A reversible anteroseptal defect on thallium-201 scintigraphy and an asynchronous septal motion on echocardiography were evident in eight patients. Thus, symptomatic patients with left bundle branch block may have reversible anteroseptal defects on thallium-201 scintigraphy which do not indicate coronary artery disease. Rather, they may be due to functional ischemia secondary to abnormal septal motion.

MeSH terms

  • Adult
  • Aged
  • Bundle-Branch Block / diagnostic imaging*
  • Coronary Vessels / diagnostic imaging*
  • Electrocardiography
  • Exercise Test / methods
  • Female
  • Humans
  • Male
  • Middle Aged
  • Radioisotopes
  • Radionuclide Imaging
  • Thallium

Substances

  • Radioisotopes
  • Thallium