Figure 2.

[Section 3.3] Recommendations for evaluation of suspected first lower extremity DVT: patients with moderate pretest probability (PTP) for DVT. Where there are preferred strategies, these are indicated by boldface print; less preferred strategies are indicated by italicizing/shading. Venography is not generally indicated in the figure, as it is not routinely used. §See Kearon et al.¹¹ £Beginning with highly sensitive D-dimer is suggested over beginning with US (Grade 2C). ^aGrade 1B vs no testing and vs venography. ^bGrade 1B vs further testing. ^cGrade 1C vs no further testing; Grade 2B vs venography. ^dGrade 1B vs no further testing; Grade 2B vs venography. ^eGrade 1B for treating DVT vs confirmatory venography. See Figure 1 legend for expansion of abbreviation.