Key result
Technetium 99m pyrophosphate imaging showed localized uptake in 9 of 10 patients with left ventricular aneurysm without acute MI, indicating caution when diagnosing acute MI in these patients.
Why the study?
Does the presence of a left ventricular aneurysm cause false-positive technetium 99m pyrophosphate myocardial scintigrams for acute myocardial infarction?
Population
50 patients, comprising 28 with acute myocardial infarction and 22 with significant coronary artery disease…
Design
Cross-sectional
Authors
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Caution needed interpreting 99mTc-PYP scans with LV aneurysm; challenges consensus but leaves open prospective validation.
Observational (n=50)
Does the presence of a left ventricular aneurysm cause false-positive technetium 99m pyrophosphate myocardial scintigrams for acute myocardial infarction?
Positive 99mTc-PYP myocardial scintigrams should be interpreted with caution in diagnosing acute myocardial infarction when a left ventricular aneurysm is present, as aneurysms can cause localized uptake.
Ahmad et al. (1976) conducted an observational in Acute myocardial infarction and left ventricular aneurysm (n=50). Technetium 99m stannous pyrophosphate (99mTc-PYP) myocardial imaging was evaluated on Myocardial scintigram activity (localized or diffuse). Technetium 99m pyrophosphate imaging showed localized uptake in 9 of 10 patients with left ventricular aneurysm without acute MI, indicating caution when diagnosing acute MI in these patients.
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