Table 2.

Ultrasonographic features affecting the clinical importance of deep venous thrombosis in intensive care unit patients

Ultrasonographic feature	Mean (SD) Rating
Proximal DVT	4.7 (0.5)
Large DVT	4.2 (0.6)
Totally occlusive DVT	3.9 (0.8)
No flow on color Doppler ultrasound	3.6 (0.7)
DVT still present 1 week after diagnosis	3.6 (0.7)
Partially occlusive DVT	3.3 (0.7)
Flow on color Doppler ultrasound	3.0 (0.6)
DVT not extending into deep system	2.7 (1.0)
Localized DVT	2.7 (0.7)
Small DVT	2.6 (0.6)
DVT not present 1 week after diagnosis	2.3 (0.8)
Distal DVT	2.0 (0.7)

According to mean scores we ranked the ultrasonographic features considered by intensivists as likely to make a deep venous thrombosis (DVT) clinically important. SD, standard deviation