The table illustrated is presented at a unit's performance improvement committee's meeting. Quarter 1: Surgical Improvement Results Surgical Infection Prevention Measures Current Rate Benchmark Cardiac surgery clients with controlled 6 a.m postoperative serum glucose 90.22% 85% Colorectal surgery clients with immediate postoperative normothermia 75.58% 85% Surgery clients with recommended DVT prophylaxis ordered 88.72% 95% Surgery clients who received appropriate DVT prophylaxis with 24 hours prior to surgery to 24 hours after surgery 84.75% 95% Prophylactic antibiotics received within 1 90.47% hour before surgical incision 90.47% 100% Prophylactic antibiotics discontinued within 24 hours after surgery 80.57% 100% Which measure indicates the greatest need for improvement compared to other hospitals?