A 58-year-old man on ICU is being treated for decompensated cirrhosis. He develops type 1 hepatorenal syndrome. IV terlipressin and albumin have been commenced. After 48 hours, his creatinine has decreased from 350 to 280 µmol/L. However, he develops severe abdominal cramping, ischaemic changes on ECG, and cyanosis of his fingertips. What complication of terlipressin is this?