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. Author manuscript; available in PMC: 2015 May 20.
Published in final edited form as: Am J Med. 2013 Nov;126(11):975–981. doi: 10.1016/j.amjmed.2013.04.018

Figure 1.

Figure 1

The clinical decision support required information about the level of clinical suspicion for pulmonary embolism (low, intermediate, or high) and the serum D-dimer level (not done, unknown, normal, or elevated). (A) If no information was provided for these variables, the application presented the user with message A and prompted them to provide additional clinical information (add indication). (B) Imaging requests for patients with a normal D-dimer level and intermediate or low suspicion for pulmonary embolism received message B. (C) Imaging requests for patients with an intermediate or low level of clinical suspicion without a D-dimer received message C. (D) No decision support was presented if the request was deemed appropriate. CT = computed tomography; CTPA = computed tomography pulmonary angiography; PE = pulmonary embolism.