Key result
Absent or reduced microvascular reflow is linked to ~113 minutes longer time to recanalization.
Why the study?
In acute myocardial infarction, the relationship of microvascular reflow reduction severity to ischemia time or secondary myocardial necrosis extension was poorly understood.
Does the severity of microvascular no-reflow assessed by technetium-99m MAA scintigraphy correlate with ischemia time and myocardial damage in patients with acute myocardial infarction?
Observational (n=25)
Does the severity of microvascular no-reflow assessed by technetium-99m MAA scintigraphy correlate with ischemia time and myocardial damage in patients with acute myocardial infarction?
Absolute Event Rate: 290.4% vs 177.3%
p-value: p=0.0238
Scintigraphic no-reflow phenomenon occurs in a subgroup of AMI patients without angiographic no-reflow, and its severity correlates with prolonged ischemia time and worse myocardial damage.
No takes yet. Share an insight, caveat, or question.
MAA scintigraphy may detect no-reflow missed by angiography in AMI; leaves open its role in risk stratification or management.
Kondo et al. (1998) conducted an observational in Acute myocardial infarction (n=25). Technetium-99m macroaggregated albumin scintigraphy was evaluated on Time to recanalization (p=0.0238). Absent or moderately reduced microvascular reflow on scintigraphy was associated with a longer time to recanalization compared to normal or slightly reduced reflow (290.4 vs 177.3 min; p=0.0238).
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