Two Cases of 'South African Flag Sign' ECG Changes
Abstract：The diagonal branch is an important branch of the left anterior descending coronary artery. Acute myocardial infarction (AMI) caused by severe stenosis or occlusion of this vessel belongs to simple or isolated high lateral wall myocardial infarction. The ECG changes are often characterized by mild or no elevation of the ST segment, and the leads showing changes are non-continuous, which can easily lead to missed diagnosis in clinical practice. The 'South African Flag Sign' ECG mnemonic can help identify whether the culprit vessel is the diagonal branch, providing a reliable basis for improving the accuracy of early diagnosis and maximizing patient prognosis.
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Publication Date：2025-09-20
Online Publishing Date：2025-11-04(First online date of this platform, not the publication date of the document)
Pages：2( 1132-1133 )