Dr Rudyard Yap, an infectious disease specialist for the MidCentral District Health Board, told Coroner Tim Scott that Dr Alaaraji had made an "inadequate" assessment.
He said the consultation notes were "scanty" and didn't include critical factors such as Mr Thompson's respiratory rate or oxygen levels.
"During the assessment there were a number of symptoms not pointed out ... people die from influenza complications like pneumonia or acute kidney injury. There's no mention of this, however it does seem this patient was in septic shock or bleeding there when he got to the consultation."
If hospitalisation had occurred, Mr Thompson may have been evaluated for antiviral therapy, intubation for respiratory failure and proper broad spectrum antibiotics, he said.
Mr Thompson's survival however could not be "guaranteed".
Mr Thompson's wife, Vicky, shared her own concerns with Dr Alaaraji about his assessment. She was present at the time and felt unhappy a chest x-ray wasn't undertaken as well as the relatively "simple" tests of taking respiratory rates and oxygen levels.
"You probably spent about five minutes on the flu side ... the rest of the time you talked about yourself," she said.
The inquest in the High Court at Palmerston North is expected to finish tomorrow.