Selection of patients for preoperative coronary angiography: use of dipyridamole-stress--thallium myocardial imaging
To identify patients likely to benefit from preoperative coronary angiography, a method utilizing pharmacologically induced coronary vasodilatation in conjunction with serial thallium 201 myocardial perfusion imaging was investigated. Fifty-four patients admitted for elective aortic or femoropopliteal procedures were studied. There were no cardiac ischemic complications in 32 patients with normal scans or persistent defects (scar). In contrast, 7 of 15 patients with thallium redistribution (ischemia) on pre-operative scanning had perioperative ischemic events, including one death and two acute infarcts. An additional seven patients with positive scans (redistribution) underwent coronary angiography prior to vascular surgery; surgically important two- or three-vessel disease was confirmed in all. Dipyridamole-thallium imaging facilitates selection of the subset of truly high-risk patients in whom preoperative coronary angiography may be warranted.
- OSTI ID:
- 6456761
- Journal Information:
- J. Vasc. Surg.; (United States), Journal Name: J. Vasc. Surg.; (United States) Vol. 3; ISSN JVSUE
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
62 RADIOLOGY AND NUCLEAR MEDICINE
ARTERIES
ARTERIOSCLEROSIS
BETA DECAY RADIOISOTOPES
BIOMEDICAL RADIOGRAPHY
BLOOD VESSELS
BODY
CARDIOVASCULAR DISEASES
CARDIOVASCULAR SYSTEM
CORONARIES
COUNTING TECHNIQUES
DAYS LIVING RADIOISOTOPES
DIAGNOSIS
DIAGNOSTIC TECHNIQUES
DISEASES
ELECTRON CAPTURE RADIOISOTOPES
HEART
HEAVY NUCLEI
ISCHEMIA
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MEDICINE
MUSCLES
MYOCARDIUM
NUCLEAR MEDICINE
NUCLEI
ODD-EVEN NUCLEI
ORGANS
PATIENTS
PERFUSED ORGANS
RADIOISOTOPE SCANNING
RADIOISOTOPES
RADIOLOGY
SECONDS LIVING RADIOISOTOPES
THALLIUM 201
THALLIUM ISOTOPES
VASCULAR DISEASES
VASODILATION