Evidence of impaired myocardial perfusion and abnormal left ventricular function during exercise in patients with isolated systolic narrowing of the left anterior descending coronary artery

Journal Article · Sun Nov 01 04:00:00 EST 1981 · Am. J. Cardiol.; (United States)

DOI:https://doi.org/10.1016/0002-9149(81)90346-5· OSTI ID:5393416

Ahmad, M; Merry, S L; Haibach, H

Seven men ranging in age from 35 to 63 years with a chest pain syndrome and cineangiographically documented systolic narrowing of the left anterior descending coronary artery underwent thallium-201 myocardial scintigraphy and gated cardiac blood pool imaging. Grade II (50 to 75 percent) systolic coronary arterial constriction was present in three patients and grade III constriction (greater than 75 percent) in four. Three of the four patients with grade III constriction had an exercise-induced perfusion abnormality in the thallium-201 scintigram and impaired left ventricular ejection fraction response during exercise. (In two patients the left ventricular ejection fraction did not change and in one patient it decreased.) Each of the three patients with grade II constriction had normal thallium-201 perfusion and a normal increase in ejection fraction during exercise. These data provide evidence of abnormal myocardial perfusion and impaired left ventricular function during exercise in patients with high grade systolic coronary arterial narrowing.

• Research Organization: Department of Nuclear Medicine, University of Missouri Medical Center, Columbia
• OSTI ID: 5393416
• Journal Information: Am. J. Cardiol.; (United States), Journal Name: Am. J. Cardiol.; (United States) Vol. 48:5; ISSN AJCDA
• Country of Publication: United States
• Language: English

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59 BASIC BIOLOGICAL SCIENCES
62 RADIOLOGY AND NUCLEAR MEDICINE
ARTERIES
BETA DECAY RADIOISOTOPES
BLOOD FLOW
BLOOD VESSELS
BODY
CARDIOVASCULAR DISEASES
CARDIOVASCULAR SYSTEM
CORONARIES
COUNTING TECHNIQUES
DAYS LIVING RADIOISOTOPES
DIAGNOSIS
DIAGNOSTIC TECHNIQUES
DIAGNOSTIC USES
DISEASES
ELECTRON CAPTURE RADIOISOTOPES
EXERCISE
HEART
HEAVY NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MUSCLES
MYOCARDIUM
NUCLEI
ODD-EVEN NUCLEI
ORGANS
PATHOLOGY
PATIENTS
PERFUSED ORGANS
RADIOISOTOPE SCANNING
RADIOISOTOPES
SCINTISCANNING
SECONDS LIVING RADIOISOTOPES
THALLIUM 201
THALLIUM ISOTOPES
USES