Fig 111.

68 year old man with hyperlipidæmia, hypertension and positive stress test returning to CCU following PTCA to LAD and LCX arteries. Severe chest pain developed on arrival (Fig 111a). What is the likely cause?

68 year old man with hyperlipidæmia, hypertension and positive stress test returning to CCU following PTCA to LAD and LCX arteries. Severe chest pain developed on arrival (Fig 111a). What is the likely cause?