Key result
Inferobasal ischemia linked to isolated inferior ST-elevation in a single PCI-treated MI case.
Why the study?
It is not clear how arterial branching dominance gives rise to the pattern of coronary artery attribution in inferior ST-elevation.
Case Report (n=1)
No
This case report suggests that inferobasal ischemia is the precise location responsible for isolated inferior ST-elevation, aiding in electrocardiographic-anatomic correlation.
Hypothesis-generating for inferobasal ischaemia in isolated inferior ST-elevation; requires prospective validation before clinical adoption.
The correlation between electrocardiographic ST-elevation distribution and occlusive coronary artery localisation is complex. When it occurs in anterior precordial leads, it indicates that the left anterior descending artery is at fault. And if Ⅰ and aVL are involved, this means a proximal artery obstruction. In contrast, ST-elevation in inferior limb leads, in 75%–80% of cases, is due to right coronary artery ischaemia. For the rest, it is mostly the circumflex artery. But it is not clear how dominance of arterial branching gives rise to this attributional pattern. A single case of myocardial infarction rapidly treated with percutaneous coronary intervention provides insight into the precise location responsible for the isolated inferior ST-elevation. This observation may help clarify electrocardiographic-anatomic correlation in clinical practice.
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Pitt O. Lim (2026) conducted a case report in Myocardial infarction (n=1). Percutaneous coronary intervention was evaluated. Inferobasal ischaemia was identified as the cause of isolated inferior ST-elevation in a single case of myocardial infarction treated with percutaneous coronary intervention.
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