Can areas of myocardial ischemia be localized by the exercise electrocardiogram. A correlative study with thallium-201 scintigraphy
Journal Article
·
· Am. Heart J.; (United States)
In order to determine whether areas of ischemia identified by thallium-201 scintigraphy could be localized by exercise ECG, we studied 54 patients with stable coronary heart disease. All 54 patients had exercise-induced thallium-201 scintigraphic defects. Their exercise ECG test results were compared to their thallium-201 images and also to 14 low-risk normal subjects. Exercise data were analyzed for spatial ST vector shifts, using a computer program in order to most accurately classify ST segment depression and elevation. Thallium-201 ischemic defects detected in our patients included areas in the septum and the inferior, lateral, and anterior walls. Twenty-six of these 54 patients also had coronary angiography for classification and comparison as having either localized or generalized disease. None of the scintigraphic ischemic sites or angiographic diseased areas could be specifically identified by exercise-induced ST vector shifts. Therefore, the surface exercise ECG has limitations in localizing ischemia to specific areas of the myocardium.
- Research Organization:
- Univ. of California, San Diego
- OSTI ID:
- 6136844
- Journal Information:
- Am. Heart J.; (United States), Journal Name: Am. Heart J.; (United States) Vol. 108:4; ISSN AHJOA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
550601* -- Medicine-- Unsealed Radionuclides in Diagnostics
62 RADIOLOGY AND NUCLEAR MEDICINE
BETA DECAY RADIOISOTOPES
BODY
CARDIOVASCULAR DISEASES
CARDIOVASCULAR SYSTEM
COMPARATIVE EVALUATIONS
COUNTING TECHNIQUES
DAYS LIVING RADIOISOTOPES
DIAGNOSIS
DIAGNOSTIC TECHNIQUES
DIAGNOSTIC USES
DIAGRAMS
DISEASES
DYNAMIC FUNCTION STUDIES
ELECTROCARDIOGRAMS
ELECTRON CAPTURE RADIOISOTOPES
EXERCISE
HEART
HEAVY NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
LABELLED COMPOUNDS
MUSCLES
MYOCARDIUM
NUCLEI
ODD-EVEN NUCLEI
ORGANS
PATIENTS
RADIOISOTOPE SCANNING
RADIOISOTOPES
SCINTISCANNING
SECONDS LIVING RADIOISOTOPES
THALLIUM 201
THALLIUM ISOTOPES
TRACER TECHNIQUES
USES
62 RADIOLOGY AND NUCLEAR MEDICINE
BETA DECAY RADIOISOTOPES
BODY
CARDIOVASCULAR DISEASES
CARDIOVASCULAR SYSTEM
COMPARATIVE EVALUATIONS
COUNTING TECHNIQUES
DAYS LIVING RADIOISOTOPES
DIAGNOSIS
DIAGNOSTIC TECHNIQUES
DIAGNOSTIC USES
DIAGRAMS
DISEASES
DYNAMIC FUNCTION STUDIES
ELECTROCARDIOGRAMS
ELECTRON CAPTURE RADIOISOTOPES
EXERCISE
HEART
HEAVY NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
LABELLED COMPOUNDS
MUSCLES
MYOCARDIUM
NUCLEI
ODD-EVEN NUCLEI
ORGANS
PATIENTS
RADIOISOTOPE SCANNING
RADIOISOTOPES
SCINTISCANNING
SECONDS LIVING RADIOISOTOPES
THALLIUM 201
THALLIUM ISOTOPES
TRACER TECHNIQUES
USES