A 56-year-old man presents to the ED. He gives a history of 4 large fresh red vomits and black tar-like stools for 12 hours.
On examination he is clammy and has cool peripheries. His pulse is 130 bpm and blood pressure 70/40 mmHg. He has a history of ischaemic heart disease.
When should this patient receive red cells?
Calculate this patient’s modified Rockall score and mortality risk.