Case Study: An Emerging Etiology for ST-Segment Elevation in Lead aVR - Takeaways - MDSpire

Case Study: An Emerging Etiology for ST-Segment Elevation in Lead aVR

  • By

  • Wei Li

  • Yang Liu

  • Pan Feng

  • Chaoji Huangfu

  • Dayong Du

  • April 29, 2026

  • 0 min

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  • 1

    ST-segment elevation in lead aVR often indicates severe coronary artery disease, but alternative causes must be considered in post-CABG patients.

  • 2

    A 74-year-old male post-CABG presented with angina and aVR ST elevation, despite patent grafts, leading to further investigation.

  • 3

    Critical left subclavian artery stenosis was identified as the cause of aVR ST elevation, compromising inflow to the LIMA graft.

  • 4

    The case highlights the need to evaluate extracoronary vascular lesions in patients with recurrent ischemia and patent grafts.

  • 5

    Endovascular treatment of subclavian stenosis resolved symptoms and ECG abnormalities, emphasizing the importance of timely diagnosis.

Original Source(s)

Case Study: An Emerging Etiology for ST-Segment Elevation in Lead aVR

  • by Wei Li, Yang Liu, Pan Feng, Chaoji Huangfu, Dayong Du

  • April 29, 2026

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