25th July 2023

A 68 year old man on your ward is being treated for a community acquired pneumonia.

A 68 year old man on your ward is being treated for a community acquired pneumonia. He is complaining of easy bruising each time bloods are taken or a cannula is put in. You also notice that when he speaks, his gums are inflamed, and he has poor oral hygiene. His platelet count and coagulation profile are relatively normal.

Which of the following vitamins is he most likely deficient in?

Select the SINGLE most appropriate option from the list below. Select ONE option only.