[Study of iliac arterial axes by Doppler ultrasonography during hyperemia induced by walking and arterial occlusion].
We measure the pulsatility index (IP) of the femoral artery by CW-Doppler on 51 limbs, after a treadmill exercise and during a postischemic reactive hyperemia. The pulsatility index (IP) is calculated from the analogic curve produced by a CW-Doppler velocimeter (DUD 400) following a previous work (3). The walking test is carried on until an intermittent caludication is achieved. The ultrasonic curve is recorded after two minutes of recuperation. The hyperemic test follows the application for one minute of a suprasystolic thigh arterial tourniquet. A significant iliac lesion is suspected when IP drops below 1.2 after exercise (3). The IP levels measured during both tests (exercise and reactive hyperemia) are well correlated (r = 0.89). The concordance is achieved among 46 limbs. There is no agreement in 5 cases. IP is lower (less than 1.2) during the reactive hyperemia and higher after exercise (greater than 1.2) in 4 cases. The walk test demonstrates a lesion when the postischemic test is negative in one single case. The CW-Doppler ultra sonography of the femoral artery after the application of a tourniquet is therefore a sensitive method to investigate the iliac flow tract. This technique may be applied on patients enable to walk on the treadmill.
D001018:Aortic Diseases / Q000503:physiopathology*; D005260:Female; D006801:Humans; D006940:Hyperemia / Q000503:physiopathology*; D007083:Iliac Artery; D007866:Leg / Q000098:blood supply*; D008297:Male; D008875:Middle Aged; D005082:Physical Exertion; D014111:Tourniquets; D014463:Ultrasonography; D014652:Vascular Diseases / Q000503:physiopathology
Etude des axes artériels iliaques par ultrasonographie doppler lors de l'hyperémie provoquée par la marche et par l'occlusion artérielle.