Intravenous administration of anisodamine is effective on variant angina

To the editor： A 60-year-old man presented to our emergency department in November 2012, due to an episode of chest pain associated with angina-linked syncope attacks. His past medical history was notable for drug-controlled hypertension （nifedipine 30 rag/d）. On physical examination following the 30 minutes after chest pain, he was asymptomatic, with vital signs in the normal range,