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myocardial viability study
Indications:
- myocardial perfusion defect at rest*
- wall motion abnormality at rest#
* myocardial perfusion scintigraphy
* dobutamine stress echocardiography
Interpretation:
- reperfusion of area after 4-24 hours (with thallium) indicates viable myocardium
- metabolic activity on PET scanning indicates viable myocardium
- improvement in wall motion with low-dose dobutamine & worsening of wall motion with high-dose dobutamine indicates viable myocardium [1]
General
clinical procedure
References
- Medical Knowledge Self Assessment Program (MKSAP) 17,
American College of Physicians, Philadelphia 2015