Collateral circulation as a marker of the presence of viable myocardium in patients with recent myocardial infarction

Journal Article · Thu Aug 01 04:00:00 EDT 1991 · American Heart Journal; (United States)

DOI:https://doi.org/10.1016/0002-8703(91)90993-R· OSTI ID:5316533

Fujita, M; Ohno, A; Wada, O; Miwa, K; Nozawa, T; Yamanishi, K; Sasayama, S ^[1]

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1. Toyama Medical and Pharmaceutical Univ. (Japan)

The relationship between the presence of viable myocardium and the extent of coronary collateral circulation to the infarct area was evaluated in 20 patients with a recent anterior myocardial infarction who had complete obstruction of the left anterior descending coronary artery. The viability of myocardial tissue was assessed by exercise thallium-201 myocardial scintigraphy, and the collateral circulation was angiographically evaluated by means of a collateral index ranging from 0 to 3. Patients were divided into two groups according to the presence (group 1, n = 10) or absence (group 2, n = 10) of viable myocardium in the perfusion territory of the infarct-related artery. The collateral index in group 1 was 2.5 {plus minus} 0.5 (SD), which was significantly higher than the 0.7 {plus minus} 0.8 in group 2. These findings indicate that the presence of ischemic but viable myocardium is intimately related to the development of collateral circulation in patients with myocardial infarction, and the existence of well-developed collateral channels predicts the presence of viable myocardium in the infarct area.

• OSTI ID: 5316533
• Journal Information: American Heart Journal; (United States), Journal Name: American Heart Journal; (United States) Vol. 122:2; ISSN AHJOA; ISSN 0002-8703
• Country of Publication: United States
• Language: English

Related Subjects

550601* -- Medicine-- Unsealed Radionuclides in Diagnostics
62 RADIOLOGY AND NUCLEAR MEDICINE
BETA DECAY RADIOISOTOPES
BIOLOGICAL MARKERS
BODY
CARDIOVASCULAR DISEASES
CARDIOVASCULAR SYSTEM
COUNTING TECHNIQUES
DAYS LIVING RADIOISOTOPES
DIAGNOSIS
DIAGNOSTIC TECHNIQUES
DIAGRAMS
DISEASES
ELECTROCARDIOGRAMS
ELECTRON CAPTURE RADIOISOTOPES
EXERCISE
HEART
HEAVY NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MYOCARDIAL INFARCTION
NUCLEI
ODD-EVEN NUCLEI
ORGANS
PATIENTS
RADIOISOTOPE SCANNING
RADIOISOTOPES
SCINTISCANNING
SECONDS LIVING RADIOISOTOPES
THALLIUM 201
THALLIUM ISOTOPES