Objective: Low-value laboratories lead to healthcare inefficiencies, unnecessary interventions, and environmental waste. Maternal complete blood count (CBC) testing is routine after cesarean birth, but does not change clinical management in most cases. We aimed to decrease routine postpartum CBC testing at a tertiary-care hospital and replace it with targeted ordering for patients at increased risk of severe anemia.
Methods: After reviewing baseline practices, we implemented a quality improvement intervention with two plan-do-study-act (PDSA) cycles. The intervention involved modification of the CBC order in the electronic postpartum order set and creation of ordering criteria: hemoglobin ≤110g/L, above average blood loss, or operating time. The primary outcome was the postpartum CBC draw proportion. Short- and long-term data were collected and evaluated using a run chart.
Results: During PDSA2, we observed a reduction in CBC draws from 99% to 34% (n = 202). Nine patients met criteria for CBC but did not have a draw; none had signs or symptoms of anemia. Decrease in draws was stable at 1 year. Detection of severe anemia (≤70 g/L) was unchanged before and after intervention (2.4 vs. 2.3%, p = .88).
Conclusions: Our intervention resulted in a significant and sustained change in postpartum CBC ordering. Similar initiatives should consider modifying ordering criteria to suit local trends.
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