Figure 1From: The Hip Fracture Surgery in Elderly Patients (HIPELD) study: protocol for a randomized, multicenter controlled trial evaluating the effect of xenon on postoperative delirium in older patients undergoing hip fracture surgery Study flow chart of the Hip Fracture Surgery in Elderly Patients (HIPELD) study. V = visit; d = day; hrs = hours, GA = general anesthesia.Back to article page