Despite increased awareness of Choosing Wisely (CW) ® recommendations to reduce low-value care, 1 there is limited published data about strategies to implement these guidelines or evidence that they have influenced ordering patterns or reduced healthcare spending. [2][3][4][5][6] Implementation science seeks to accelerate the translation of evidence-based interventions into clinical practice and the deimplementation of low-value care. [7][8][9] Based on established principles of implementation science, we used a prospective, nonrandomized study design to assess a CW intervention to reduce chest X-ray (CXR) ordering in adult intensive care units (ICUs). 10 In ICUs, CXR ordering strategies may be routine (daily) or on-demand (with clinical indication). The former strategy's principal advantage is the potential to detect life-threatening situations that may otherwise escape diagnosis. 11 Disadvantages include cost, radiation exposure, patient inconvenience, false-positive workups, and low diagnostic and therapeutic value. 12,13 On-demand strategies may safely reduce CXR ordering by 32% to 45%. [11][12][13][14][15][16][17] Based on this evidence, the Critical Care Societies Collaborative and the American College of Radiology have recommended on-demand CXR ordering. 18,19 Here, we describe the effectiveness of an intervention to reduce CXR ordering in two ICUs while evaluating the deimplementation strategies using a validated framework.
METHODS
Setting and DesignVanderbilt University Medical Center (VUMC) is an academic referral center in Nashville, Tennessee. The cardiovascular ICU (CVICU) has 27 beds and the medical ICU (MICU) has 34 beds. Acute care nurse practitioners (ACNPs) and two critical care physicians staff the CVICU; cardiology fellows, anesthesia critical