[Successful control of rapid heart rate in a patient with atrial fibrillation by continuous intravenous administration of landiolol hydrochloride].

A 79-year-old man with atrial fibrillation underwent total pharyngolaryngectomy and free flap reconstruction for hypolaryngeal cancer under general anesthesia. He developed tachyarrhythmia with ST depression and inverted T wave. The treatment including sufficient fluid therapy, continuous administration of vasodilator and intravenous digoxin failed to control the abnormalities.