Crossmatch to Transfusion Ratios in the Operating Room with an Expanding Hospital Footprint
Abstract Introduction/Objective The crossmatch to transfusion (CT) ratio is one of several metrics used to assess the efficiency of blood product utilization. A ratio of 2:1 has been suggested as a hospitalwide limit that indicates appropriate use of red blood cells (RBCs), and the Q Probe Study found that the average CT ratio for hospitals in the United States is 1.85:1. This ratio can vary widely from one patient location to another due to anticipatory or unknown needs within the operating room (OR) compared to laboratory or symptomatic based orders for patients on the floor. Following a recent hospital expansion at Stanford University Hospital that led to the creation of multiple adult OR locations and a move of our blood bank, we monitored the CT ratios of various OR locations and surgical subspecialties to assess the drivers of increased blood product utilization and interventions that could improve these metrics. Methods/Case Report This quality improvement project involved the collection of blood product order information through our LIS (SafeTrace) and clinical system (EPIC), creation of an on-demand report to provide constant updates to that data, qualitative interviews with OR staff, and process mapping for multiple subspecialties. Results (if a Case Study enter NA) Prior to our hospital expansion there was an appropriate CT ratio of 2.1:1 in our adult ORs. Post-expansion, this ratio has been between 3-5:1, depending on the OR location. This led us to focus our efforts on the OR locations that were furthest from the blood bank and existed prior to the hospital expansion. In discussions with our OR colleagues, we found that the major driver for this increased ratio was a longer travel path for blood products and delays in delivery which led to larger amounts of anticipatory orders. In addition, these concerns caused duplicative efforts in the OR with surgical teams and Anesthesiologists placing pre-operative orders for the same cases. To address this concern, remote blood product dispensing was implemented. To address duplicative ordering workflows, we partnered with Anesthesiology to determine the blood ordering workflow agreements with each surgical subspecialty to ensure appropriate division of roles and responsibilities. Evaluation of CT ratios after these interventions is ongoing, but early data suggests a significant reduction. Conclusion Post-intervention phase ongoing and will be updated with additional data & conclusions prior to conference.