Anterior ST-Segment Elevation Myocardial Infarction Shortly After Cefaclor Exposure: A Case Report Highlighting Kounis Syndrome as a Differential Diagnosis

Quan Zuo; Yue Zhu; Zhiwei Wang; Tao Ge

doi:10.12659/AJCR.953705

09 July 2026 : Case report China

Anterior ST-Segment Elevation Myocardial Infarction Shortly After Cefaclor Exposure: A Case Report Highlighting Kounis Syndrome as a Differential Diagnosis

Unusual clinical course, Challenging differential diagnosis, Unexpected drug reaction, Educational Purpose (only if useful for a systematic review or synthesis)

Quan Zuo^{ABCDEFG 1*}, Yue Zhu^{BE 1}, Zhiwei Wang^{BE 1}, Tao Ge^{ABCDEFG 1}

DOI: 10.12659/AJCR.953705

Am J Case Rep 2026; 27:e953705

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Figure 1 Electrocardiography (ECG) findings. (A) Admission ECG showing ST-segment elevation in leads V2–V6, consistent with anterior ST-segment elevation myocardial infarction (STEMI). (B) Post-percutaneous coronary intervention ECG demonstrating regression of ST-segment elevation. Both panels are original clinical images from this case and have not been previously published.

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Anterior ST-Segment Elevation Myocardial Infarction Shortly After Cefaclor Exposure: A Case Report Highlighting Kounis Syndrome as a Differential Diagnosis

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