I: You are the ICU registrar called by the nurse of the patient in bed 5

S: Nurse reports that the lab called, and the patient’s Hb is 50. It corresponds to the progressive drop on the ABGs as well.

B: 52M who was admitted to ITU yesterday due to type 1 respiratory failure. His blood tests and CXR on admission were suggestive of community-acquired pneumonia and he required intubation due to agitation and hypoxia. He has been presumed to have a PE as well but was not stable enough yesterday to go for a CTPA after intubation and is planned to have one this afternoon instead. He is on treatment dose LMWH in the meantime

A: Hb on last ABG 52.

R: Called for help