Treatment of Renal Trauma Strict bed rest and, for patients admitted to the hospital, close monitoring of vital signs Surgical repair or angiographic intervention for some blunt and most penetrating high-grade renal injuries Most blunt renal injuries, including all grade 1 and 2 and most grade 3 and 4 injuries, can be safely managed nonoperatively; most patients with grades 1 or 2 and some with grade 3 can be discharged.