Key result
Angiographic features such as myocardial blush grade ≤2 (13 viable vs 3 non-viable) and TIMI flow ≤2 (10 viable vs 1 non-viable) did not significantly predict myocardial viability in STEMI.
Why the study?
This study aimed to identify angiographic features that would predict myocardial viability after coronary intervention for STEMI.
Do angiographic features during primary angioplasty predict myocardial viability in patients with STEMI?
Observational (n=72)
No
Do angiographic features during primary angioplasty predict myocardial viability in patients with STEMI?
Angiographic features such as myocardial blush grade and TIMI flow during primary angioplasty for STEMI do not reliably predict subsequent myocardial viability.
Answers are grounded in this paper and cite their sources.
Angiographic features should not guide viability assessment after STEMI PCI; leaves open validation of alternative predictors in prospective studies.
Objectives: This study aimed to identify angiographic features that would predict myocardial viability after coronary intervention for ST elevation myocardial infarction (STEMI). Methods: This retrospective study included patients who attended Sultan Qaboos University Hospital, Muscat, Oman, between January and December 2019 with a STEMI. Results: A total of 72 patients (61 male; mean age = 54.9 ± 12.7 years) were included in the study; 11 patients had evidence of non-viability on echocardiography. There were 13 patients with viable myocardium and 3 with non-viable myocardium who had a myocardial blush grade (MBG) of 2 or lower. Similarly, 10 patients with viability and 1 with non-viable myocardium had thrombolysis in myocardial infarction (TIMI) flow of 2 or lower in the infarct related artery (IRA). However, none of these were statistically significant. The TIMI flow in the IRA at the end of the procedure correlated with the MBG. Conclusion: There were no clear angiographic features during primary angioplasty that could predict myocardial viability.
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Al-Maashari et al. (2023) conducted an observational in ST elevation myocardial infarction (STEMI) (n=72). Angiographic features (MBG and TIMI flow) was evaluated on Myocardial viability. Angiographic features such as myocardial blush grade ≤2 (13 viable vs 3 non-viable) and TIMI flow ≤2 (10 viable vs 1 non-viable) did not significantly predict myocardial viability in STEMI.
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