To augment venous blood flow at Doppler ultrasonography (US) of the ex
tremities, a device comprising a blood pressure cuff connected to an e
xternal reservoir was tested. Constant and easily controlled pressure
was delivered with each compression by the same operator performing US
. In 10 patients (four men and six women, aged 54-86 years), discomfor
t was reduced compared with discomfort during manual compression, whic
h requires two operators.