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Appropriateness of anteroseptal myocardial infarction nomenclature evaluated by late gadolinium enhancement cardiovascular magnetic resonance imaging.
Journal of Electrocardiology 2018 March
BACKGROUND: In traditional literature, it appears that "anteroseptal" MIs with Q waves in V1-V3 involve basal anteroseptal segments although studies have questioned this belief.
METHODS: We studied patients with first acute anterior Q-wave (>30ms) MI. All underwent late gadolinium enhancement (LGE) cardiac magnetic resonance imaging (MRI).
RESULTS: Those with Q waves in V1-V2 (n=7) evidenced LGE >50% in 0%, 43%, 43%, 57%, and 29% of the basal anteroseptal, mid anteroseptal, apical anterior, apical septal segments, and apex, respectively. Patients with Q waves in V1-V3 (n=14), evidenced involvement was 14%, 43%, 43%, 50%, and 7% of the same respective segments. In those with extensive anterior Q waves (n=7), involvement was 0%, 71%, 57%, 86%, and 86%.
CONCLUSIONS: Q-wave MI in V1-V2/V3 primarily involves mid- and apical anterior and anteroseptal segments rather than basal segments. Data do not support existence of isolated basal anteroseptal or septal infarction. "Anteroapical infarction" is a more appropriate term than "anteroseptal infarction."
METHODS: We studied patients with first acute anterior Q-wave (>30ms) MI. All underwent late gadolinium enhancement (LGE) cardiac magnetic resonance imaging (MRI).
RESULTS: Those with Q waves in V1-V2 (n=7) evidenced LGE >50% in 0%, 43%, 43%, 57%, and 29% of the basal anteroseptal, mid anteroseptal, apical anterior, apical septal segments, and apex, respectively. Patients with Q waves in V1-V3 (n=14), evidenced involvement was 14%, 43%, 43%, 50%, and 7% of the same respective segments. In those with extensive anterior Q waves (n=7), involvement was 0%, 71%, 57%, 86%, and 86%.
CONCLUSIONS: Q-wave MI in V1-V2/V3 primarily involves mid- and apical anterior and anteroseptal segments rather than basal segments. Data do not support existence of isolated basal anteroseptal or septal infarction. "Anteroapical infarction" is a more appropriate term than "anteroseptal infarction."
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