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document
The A-V Impulse System reduces deep-vein thrombosis and swelling after hemiarthroplasty for hip fracture . 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 .
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Intervention_Physical
A-V Impulse System
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Intervention_Physical
A-V Impulse System
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Intervention_Physical
Doppler ultrasonography
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Outcome_Other
mean relative reduction of postoperative swelling of the thigh
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Outcome_Other
safe
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Outcome_Physical
incidence of proximal deep-vein thrombosis
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Outcome_Adverse-effects
postoperative swelling
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Participant_Condition
deep-vein thrombosis
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Participant_Condition
hemiarthroplasty for hip fracture
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Participant_Sample-size
82
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Participant_Condition
treated by hemiarthroplasty for subcapital fracture of the femoral neck