Medivac - Season 3 Episode 4 Pity

Sean brings in Ernie, a homeless man whose illness is exacerbated by his heavy drinking. A woman, brought to the hospital via medivac after her husband attacked her with a shovel, instigates a frantic search when she cuts off her finger in order to remove her wedding ring. While looking through old patient records for information on Ernie, Sean learns of Tom's illness