RT Journal Article
SR Electronic
T1 General Practitioner–Performed Compression Ultrasonography for Diagnosis of Deep Vein Thrombosis of the Leg: A Multicenter, Prospective Cohort Study
JF The Annals of Family Medicine
JO Ann Fam Med
FD American Academy of Family Physicians
SP 535
OP 539
DO 10.1370/afm.2109
VO 15
IS 6
A1 Mumoli, Nicola
A1 Vitale, Josè
A1 Giorgi-Pierfranceschi, Matteo
A1 Sabatini, Silvia
A1 Tulino, Renato
A1 Cei, Marco
A1 Bucherini, Eugenio
A1 Bova, Carlo
A1 Mastroiacovo, Daniela
A1 Camaiti, Alberto
A1 Palmiero, Gerardo
A1 Puccetti, Luca
A1 Dentali, Francesco
A1 
YR 2017
UL http://www.annfammed.org/content/15/6/535.abstract
AB BACKGROUND Patients with suspected deep vein thrombosis (DVT) of the lower limb represent a diagnostic dilemma for general practitioners. Compression ultrasonography (US) is universally recognized as the best test of choice. We assessed the diagnostic accuracy of compression US performed by general practitioners given short training in the management of symptomatic proximal DVT.METHODS From May 2014 to May 2016, we evaluated in a multicenter, prospective cohort study all consecutive outpatients with suspected DVT; bilateral proximal lower limb compression US was performed by general practitioners and by physicians expert in vascular US, each group blinded to the other’s findings. In all examinations with a negative or nondiagnostic result, compression US was repeated by the same operator after 5 to 7 days. Inter-observer agreement and accuracy were calculated.RESULTS We enrolled a total of 1,107 patients. The expert physicians diagnosed DVT in 200 patients, corresponding to an overall prevalence of 18.1% (95% CI, 15.8%–20.3%). The agreement between the trained general practitioners and the experts was excellent (Cohen κ = 0.86; 95% CI, 0.84–0.88). Compression US performed by general practitioners had a sensitivity of 90.0% (95% CI, 88.2%–91.8%) and a specificity of 97.1% (95% CI, 96.2%–98.1%) with a diagnostic accuracy for DVT of 95.8% (95% CI, 94.7%–97.0%).CONCLUSIONS Our results suggest that, even in hands of physicians not expert in vascular US, compression US can be a reliable tool in the diagnosis of DVT. We found that the sensitivity achieved by general practitioners appeared suboptimal, however, so future studies should evaluate the implementation of proper training strategies to maximize skill.