Detection of active left ventricular thrombosis during acute myocardial infarction using indium-111 platelet scintigraphy
Platelet scintigraphy with radioactive indium-111 may be used both to identify and to reflect the activity of thrombin in vivo in man. Forty-one patients with acute myocardial infarction were studied for active left ventricular thrombosis by platelet scintigraphy and followed until in-hospital death, discharge, or same-admission cardiac surgery for evidence of systemic embolization. Group 1 (n . 29) had transmural myocardial infarctions, of which 21 were anterior and eight were inferior. Group 2 (n . 12) had subendocardial myocardial infarctions. Those with subendocardial and transmural inferior myocardial infarctions had neither left ventricular thrombosis nor emboli. Ten (48 percent) of 21 with anterior transmural myocardial infarctions had left ventricular thrombosis by platelet scintigraphy. Three with and one without such thrombosis by scintigraphy had acute neurologic episodes. In the group with anterior myocardial infarctions, seven of ten patients with and four of 11 without left ventricular thrombosis received heparin subcutaneously. We conclude that platelet scintigraphy may be used to monitor antiplatelet and anticoagulant therapy in patients with anterior transmural myocardial infarctions who are at risk for left ventricular thrombosis and systemic embolization.
- Research Organization:
- Univ. of Oklahoma Health Sciences Center, Oklahoma City
- OSTI ID:
- 6472167
- Journal Information:
- Chest; (United States), Vol. 86:1
- Country of Publication:
- United States
- Language:
- English
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