title: The A-V Impulse System reduces deep-vein thrombosis and swelling after hemiarthroplasty for hip fracture.
abstract: We performed a prospective randomised controlled trial of the A-V Impulse System in 82 patients treated by hemiarthroplasty for subcapital fracture of the femoral neck. The incidence of proximal deep-vein thrombosis as assessed by Doppler ultrasonography was 23% in the control group and 0% in those using the device (p less than 0.01). Calf and thigh circumferences were measured in both groups at seven to ten days after operation. In the treatment group there was a mean relative reduction of postoperative swelling of the thigh by 3.27 cm (p less than 0.001) and of the calf by 1.55 cm (p less than 0.001). The A-V Impulse System appears to be a safe and effective method of reducing the incidence of proximal deep-vein thrombosis, and of postoperative swelling.
authors.affiliation: Queen Alexandra Hospital, Portsmouth, Hampshire, England.
authors.forename: G J
authors.initials: GJ
authors.lastname: Stranks
authors.forename: N A
authors.initials: NA
authors.lastname: MacKenzie
authors.forename: M L
authors.initials: ML
authors.lastname: Grover
authors.forename: T
authors.initials: T
authors.lastname: Fail
mesh_terms: D004487:Edema / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000517:prevention & control*; D005069:Evaluation Studies as Topic; D006620:Hip Fractures / Q000150:complications / Q000601:surgery*; D006622:Hip Prosthesis; D006801:Humans; D026741:Physical Therapy Modalities / Q000295:instrumentation* / Q000706:statistics & numerical data; D011183:Postoperative Complications / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000517:prevention & control*; D011446:Prospective Studies; D013924:Thrombophlebitis / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000517:prevention & control*; D014463:Ultrasonography