Can myocardial ischemia be recognized by the exercise electrocardiogram in coronary disease patients with abnormal resting Q waves

Journal Article · Thu May 01 04:00:00 EDT 1986 · Am. Heart J.; (United States)

DOI:https://doi.org/10.1016/0002-8703(86)90641-1· OSTI ID:5428706

Ahnve, S; Savvides, M; Abouantoun, S; Atwood, J E; Froelicher, V

This study was performed in order to determine whether exercise-induced myocardial ischemia demonstrated by thallium-201 imaging could be detected by ST segment shifts in patients with abnormal Q waves at rest. Fifty-four patients with coronary artery disease and exercise-induced thallium-201 defects were compared to 22 patients with similar Q wave patterns but without thallium-201 exercise defects and to 14 normal subjects. Exercise data were analyzed visually in the 12-lead ECG and for spatial ST vector shifts. Both ST segment depression observed on the 12-lead ECG and spatial criteria were reasonably sensitive and specific for ischemia when the resting ECG showed no Q waves or inferior Q waves (range 69% to 93%). However, when anterior Q waves were present, ST segment shifts could not distinguish patients with ischemia from those with normal perfusion as determined by thallium imaging.

• Research Organization: Univ. of California, San Diego
• OSTI ID: 5428706
• Journal Information: Am. Heart J.; (United States), Journal Name: Am. Heart J.; (United States) Vol. 5; ISSN AHJOA
• Country of Publication: United States
• Language: English

Related Subjects

550601* -- Medicine-- Unsealed Radionuclides in Diagnostics
62 RADIOLOGY AND NUCLEAR MEDICINE
BETA DECAY RADIOISOTOPES
BODY
CARDIOVASCULAR DISEASES
CARDIOVASCULAR SYSTEM
DAYS LIVING RADIOISOTOPES
DIAGNOSIS
DIAGRAMS
DISEASES
ELECTROCARDIOGRAMS
ELECTRON CAPTURE RADIOISOTOPES
EXERCISE
HEART
HEAVY NUCLEI
ISCHEMIA
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
ORGANS
PATIENTS
PERFUSED ORGANS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
THALLIUM 201
THALLIUM ISOTOPES
VASCULAR DISEASES