When Is An Extremity CTA Necessary?

Here’s another piece regarding low-value testing in trauma, focusing on another topic: the use of CT angiograms for evaluation of extremity vascular injury.

This single-center, retrospective series looks at use of the extremity computed tomography angiogram in the setting of orthopedic and multi-system trauma. For what it’s worth, at least, there were only 275 scans identified during their 10-year study period. However, the bad news, of course: only 16 (6%) of those scans identified an injury requiring treatment.

Of greatest interest to those trying to eradicate low-value care comes the entirely unsurprising observation that 109 (40%) of patients received CTAs despite the absence of hard or soft signs of vascular injury – and all were normal. Additionally, all 16 cases requiring treatment had diminished or absent distal pulses on presentation.

I do anedcotally see the clinical examination being devalued, especially in trauma – it shouldn’t be!

“When are CT angiograms indicated for patients with lower extremity fractures? A review of 275 extremities”
http://journals.lww.com/jtrauma/Abstract/publishahead/When_are_CT_angiograms_indicated_for_patients_with.99386.aspx