LymphedemaV1, Main, Exploration, bibRecord, 000029

Venous haemodynamics of Jet Impulse Technology within a lower limb fibreglass cast: a randomized controlled trial

Identifieur interne : 000029 ( Main/Exploration ); précédent : 000028; suivant : 000030

Venous haemodynamics of Jet Impulse Technology within a lower limb fibreglass cast: a randomized controlled trial

Auteurs : Irene Braithwaite [Nouvelle-Zélande] ; Stephen Mackintosh [Nouvelle-Zélande] ; Samantha Buchanan [Nouvelle-Zélande] ; Kerstin Schwarzenlander [Nouvelle-Zélande] ; Bernadette De Ruyter [Nouvelle-Zélande]

Source :

JRSM Open [ 2054-2704 ] ; 2017.

RBID : PMC:5298418

Abstract

Objectives

We investigated popliteal venous haemodynamics of the VenaJet Jet Impulse Technology system within a below-knee fibreglass cast.

Design

Randomized controlled trial.

Participants

Twenty-four healthy participants aged 18–54 had both feet placed within the Jet Impulse Technology system and were randomised for one or other leg to be within a below-knee fibreglass cast.

Setting

Pacific Radiology, Lower Hutt, Wellington

Main outcome measures

The primary outcome variable was peak systolic velocity (cm/s) compared between legs with and without the cast at 60 min (after 10 min Jet Impulse Technology activation), using a mixed linear model and a non-inferiority bound of 4.8 cm/s. Secondary outcome variables were the difference in peak systolic velocity between the casted limb and the non-casted limb at baseline and 40 min after casting, and the difference in mean flow velocity (cm/s), vein diameter (mm), and total volume flow (L/min) between the casted limb and the non-casted limb at baseline, 40 and 60 min.

Results

The mean (standard deviation) peak systolic velocity was 4.6(1.5), 4.8(1.1), 28.8(16.1), and 4.3(1.2), 4.8(1.4) and 29.3(19.0) cm/s at baseline, 40 and 60 min in the casted and non-casted leg, respectively. The difference (95% confidence interval) between cast and no-cast at 60 min was −0.8 (−6.5 to 4.9) cm/s, P = 0.78. The peak systolic velocity, flow velocity and total volume flow at 40 min were not statistically significantly different from baseline for both casted and non-casted limb.

Conclusion

In healthy volunteers, the popliteal venous haemodynamics of the Jet Impulse Technology system was similar between the legs with and without a below-knee fibreglass cast. In-cast Jet Impulse Technology may provide a non-pharmacological option for venous thromboembolism prophylaxis for lower-limb cast-immobility.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5298418

DOI: 10.1177/2054270416681746
PubMed: 28203384
PubMed Central: 5298418

Affiliations:

Nouvelle-Zélande

Le document en format XML

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<front><div type="abstract" xml:lang="en"><sec><title>Objectives</title>
<p>We investigated popliteal venous haemodynamics of the VenaJet Jet Impulse Technology system within a below-knee fibreglass cast.</p>
</sec>
<sec><title>Design</title>
<p>Randomized controlled trial.</p>
</sec>
<sec><title>Participants</title>
<p>Twenty-four healthy participants aged 18–54 had both feet placed within the Jet Impulse Technology system and were randomised for one or other leg to be within a below-knee fibreglass cast.</p>
</sec>
<sec><title>Setting</title>
<p>Pacific Radiology, Lower Hutt, Wellington</p>
</sec>
<sec><title>Main outcome measures</title>
<p>The primary outcome variable was peak systolic velocity (cm/s) compared between legs with and without the cast at 60 min (after 10 min Jet Impulse Technology activation), using a mixed linear model and a non-inferiority bound of 4.8 cm/s. Secondary outcome variables were the difference in peak systolic velocity between the casted limb and the non-casted limb at baseline and 40 min after casting, and the difference in mean flow velocity (cm/s), vein diameter (mm), and total volume flow (L/min) between the casted limb and the non-casted limb at baseline, 40 and 60 min.</p>
</sec>
<sec><title>Results</title>
<p>The mean (standard deviation) peak systolic velocity was 4.6(1.5), 4.8(1.1), 28.8(16.1), and 4.3(1.2), 4.8(1.4) and 29.3(19.0) cm/s at baseline, 40 and 60 min in the casted and non-casted leg, respectively. The difference (95% confidence interval) between cast and no-cast at 60 min was −0.8 (−6.5 to 4.9) cm/s, <italic>P</italic>
 = 0.78. The peak systolic velocity, flow velocity and total volume flow at 40 min were not statistically significantly different from baseline for both casted and non-casted limb.</p>
</sec>
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<p>In healthy volunteers, the popliteal venous haemodynamics of the Jet Impulse Technology system was similar between the legs with and without a below-knee fibreglass cast. In-cast Jet Impulse Technology may provide a non-pharmacological option for venous thromboembolism prophylaxis for lower-limb cast-immobility.</p>
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Venous haemodynamics of Jet Impulse Technology within a lower limb fibreglass cast: a randomized controlled trial

Venous haemodynamics of Jet Impulse Technology within a lower limb fibreglass cast: a randomized controlled trial

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Abstract

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