Ischemic J waves can occur in vasospastic angina and may serve as a warning sign for life-threatening ventricular arrhythmias.
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May signal arrhythmia risk in vasospastic angina; leaves open whether ECG monitoring improves outcomes.
Vasospastic angina is caused by sudden occlusive vasoconstriction of a segment of an epicardial artery, which can present with a wide spectrum of clinical scenario. We report the cases of two patients diagnosed with vasospastic angina, with one of which presenting with sudden cardiac arrest, while the other presenting with a relatively benign syncope. But both of them have J waves formation on ECG during active ischemia. The diagnosis and management of vasospastic angina, as well as the proposed clinical significance of J waves during coronary spasm are discussed.
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Zhu et al. (2015) studied this question.
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