Effects of resting ischemia assessed by thallium scintigraphy on QRS scoring system for estimating left ventricular function quantified by radionuclide angiography in acute myocardial infarction patients

Journal Article · Fri Jun 01 04:00:00 EDT 1984 · Am. Heart J.; (United States)

DOI:https://doi.org/10.1016/0002-8703(84)90279-5· OSTI ID:7016717

DePace, N L; Hakki, A H; Iskandrian, A S

The purpose of this study was to determine whether resting ischemia limits the usefulness of the QRS scoring system in predicting left ventricular (LV) ejection fraction (EF) in patients with acute infarction. We studied 48 patients after acute infarction by means of 12-lead ECG, thallium-201 scintigraphy, and radionuclide angiography. The thallium-201 scintigrams showed fixed defects in 25 patients, perfusion defects with partial or complete redistribution in the delayed images in 19 patients, and normal images in the remaining four patients. In the 48 patients there was a significant correlation between the QRS score and LVEF (r . -0.67; p less than 0.001). Patients with fixed defects showed a better correlation than patients with resting ischemia (r . -0.77 vs r . -0.60). A QRS score of 3 or less was used to separate patients with LVEF of 40% or greater from those with lower LVEF in patients with fixed defects (p . 0.0005), but this cutoff did not categorize patients with resting ischemia as to LVEF. Thus the presence of rest ischemia in patients with acute infarction may affect the correlation between QRS score and LVEF.

• Research Organization: Likoff Cardiovascular Institute of Hahnemann University and Hospital, Philadelphia, PA
• OSTI ID: 7016717
• Journal Information: Am. Heart J.; (United States), Journal Name: Am. Heart J.; (United States) Vol. 107:6; 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
BIOMEDICAL RADIOGRAPHY
BLOOD VESSELS
BODY
CARDIOVASCULAR DISEASES
CARDIOVASCULAR SYSTEM
COUNTING TECHNIQUES
DAYS LIVING RADIOISOTOPES
DIAGNOSTIC TECHNIQUES
DISEASES
ELECTRON CAPTURE RADIOISOTOPES
HEART
HEAVY NUCLEI
ISCHEMIA
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MEDICINE
MYOCARDIAL INFARCTION
NUCLEAR MEDICINE
NUCLEI
ODD-EVEN NUCLEI
ORGANS
PATHOGENESIS
PATIENTS
RADIOISOTOPE SCANNING
RADIOISOTOPES
RADIOLOGY
SCINTISCANNING
SECONDS LIVING RADIOISOTOPES
THALLIUM 201
THALLIUM ISOTOPES
VASCULAR DISEASES