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The value of ECG in identifying the infarct-related artery in patients with acute inferior myocardial infarction

Li Li

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Abstract

Objective To investigate the Electrocardiography(ECG) criteria for identifying the infarct-related artery(IRA) in patients with acute inferior myocardial infarction(MI). Methods We retrospectively studied 60 patients with acute inferior MI hospitalized in the cardiovascular department of our hospital. The ECG recorded within 24h of the onset of symptoms were analyzed. Results Four previously described criteria were useful in identifying the Right Coronary Artery(RCA) or the Left Circumflex artery(LCX) as the IRA: ST-segment elevation in Lead Ⅰ;ST-segment more elevated in lead Ⅲ than in lead Ⅱ; ST-segment elevation≥0.5mm in lead V4R; ST-segment elevation or depression in lead V1 and V2.A new criteria was as useful as above 4: ST-segment depression in lead aVR. Conclusion The presence of ST-segment depression in lead aVR is a new criteria for identifying IRA in patients with acute inferior MI.

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Objective To investigate the Electrocardiography(ECG) criteria for identifying the infarct-related artery(IRA) in patients with acute inferior myocardial infarction(MI). Methods We retrospectively studied 60 patients with acute inferior MI hospitalized in the cardiovascular department of our hospital. The ECG recorded within 24h of the onset of symptoms were analyzed. Results Four previously described criteria were useful in identifying the Right Coronary Artery(RCA) or the Left Circumflex artery(LCX) as the IRA: ST-segment elevation in Lead Ⅰ;ST-segment more elevated in lead Ⅲ than in lead Ⅱ; ST-segment elevation≥0.5mm in lead V4R; ST-segment elevation or depression in lead V1 and V2.A new criteria was as useful as above 4: ST-segment depression in lead aVR. Conclusion The presence of ST-segment depression in lead aVR is a new criteria for identifying IRA in patients with acute inferior MI.

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Available abstract

Objective To investigate the Electrocardiography(ECG) criteria for identifying the infarct-related artery(IRA) in patients with acute inferior myocardial infarction(MI). Methods We retrospectively studied 60 patients with acute inferior MI hospitalized in the cardiovascular department of our hospital. The ECG recorded within 24h of the onset of symptoms were analyzed. Results Four previously described criteria were useful in identifying the Right Coronary Artery(RCA) or the Left Circumflex artery(LCX) as the IRA: ST-segment elevation in Lead Ⅰ;ST-segment more elevated in lead Ⅲ than in lead Ⅱ; ST-segment elevation≥0.5mm in lead V4R; ST-segment elevation or depression in lead V1 and V2.A new criteria was as useful as above 4: ST-segment depression in lead aVR. Conclusion The presence of ST-segment depression in lead aVR is a new criteria for identifying IRA in patients with acute inferior MI.

Key concepts: Medicine, Cardiology, ST segment, Internal medicine, Myocardial infarction, ST elevation, Electrocardiography, Right coronary artery

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The value of ECG in identifying the infarct-related artery in patients with acute inferior myocardial infarction — Research Paper | ScholarLens