A case of Brugada syndrome coexisting with vasospastic angina: Caution should be taken when using calcium channel blockers.

Although calcium channel blockers have been reported to aggravate Brugada-type electrocardiogram (ECG) abnormalities, there have been few reports in clinical settings. We present a case of Brugada syndrome coexisting with vasospastic angina, in whom Brugada-type ST-segment elevation was aggravated and ventricular fibrillation attacks occurred by calcium channel blocker treatment. When prescribing calcium channel blockers to patients with Brugada syndrome, it is important to pay careful attention to changes in their ECG pattern.