Key result
Left atrial peak reservoir strain assessed by cardiac MRI feature tracking independently predicted major adverse cardiovascular events after acute myocardial infarction (adjusted HR 0.95; P=0.02).
Why the study?
The role of left atrial performance in acute myocardial infarction remains controversial.
Does left atrial function assessed by cardiac MRI feature tracking predict major adverse cardiovascular events in patients after acute myocardial infarction?
Observational (n=1,235)
Blinded to clinical status
Yes
Does left atrial function assessed by cardiac MRI feature tracking predict major adverse cardiovascular events in patients after acute myocardial infarction?
Effect estimate: HR 0.95
p-value: p=0.02
Left atrial peak reservoir strain derived from cardiac MRI feature tracking provides incremental prognostic value for predicting MACE after acute myocardial infarction beyond established risk factors.
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May refine post-MI risk stratification beyond standard factors; leaves open prospective validation before clinical adoption.
Schuster et al. (2019) conducted an observational in Acute myocardial infarction (STEMI or NSTEMI) (n=1,235). Cardiac MRI myocardial feature tracking (MRI-FT) of left atrial function was evaluated on Major adverse cardiovascular events (MACE) within 12 months (HR 0.95, p=0.02). Left atrial peak reservoir strain assessed by cardiac MRI feature tracking independently predicted major adverse cardiovascular events after acute myocardial infarction (adjusted HR 0.95; P=0.02).
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