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Recruiting NCT03303586

Effects of Compression Stockings in Asthma Symptoms at Night

No phase Interventional Asthma

For patients and families

In plain language

An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.

What is being studied
The protocol lists: Compression Stockings, Control.
Who it may be relevant to
Registry conditions: Asthma. Basic parameters: 20 years — 75 years · All.
What needs checking
Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
Where it takes place
Canada
Next step
Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →

Unsure about the terms? Read our patient guide →

Official title

Investigating the Effects of Wearing Compression Stockings to Improve Asthma Symptoms at Night

Overview

Nocturnal worsening of asthma is common. It is characterized by overnight exacerbation of asthma symptoms such as shortness of breath, chest tightness, coughing, and wheezing, increased need of asthma medications and airway hyperresponsiveness, and decline in lung function (1). Nocturnal asthma has been attributed in part to circadian variations in lung function and airway inflammation. However, other factors including sleep, supine posture and lung volume may also contribute to nocturnal asthma. Current treatments often improve nighttime asthma symptoms. Nevertheless, nocturnal asthma is still common. Up to 2/3rd of asthma patients report nocturnal asthma symptoms, and many asthma related events occur at night, indicating poor asthma control. Results from an ongoing study suggest that in asthma while subjects were supine, fluid shifted out of the legs and accumulated in the thorax (rostral fluid shift) contributing to lower airway narrowing in asthma. A previou study has shown that wearing compression stockings during the day reduces fluid retention in the legs, reduces nocturnal rostral fluid shift out of the legs, and improves sleep apnea (2, 3). The aims of the proposed study is investigate whether off-the-shelf, below the knee compression stockings will attenuate nocturnal fluid shift and lower airway narrowing in asthma.

Interventions

  • Other Compression Stockings
    We will use knee length, ready-made compression stockings at a pressure of 20-30mmHg at the ankle and if a good fit cannot be obtained, custom-made stockings will be ordered. Patients will be measured for compression stockings by a certified fitter.
  • Other Control
    Participants will not wearing compression stockings for two weeks.

Primary outcome measures

  • Effect of wearing compression stockings on reducing rostral fluid shift during sleep and its effect in airway narrowing [Time frame: After 2 weeks of the intervention]

Eligibility criteria

Inclusion Criteria: non-smokers or former smokers (<10 pack/year)

Exclusion Criteria: uncontrolled hypertension

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: Yes

Study design

Allocation
Randomized
Model
Crossover
Masking
Open label
Primary purpose
Treatment

Study locations

Canada · 1 center
  • Toronto Rehabilitation Institute (TRI) — Toronto

Publications

  • Skloot GS. Nocturnal asthma: mechanisms and management. Mt Sinai J Med. 2002 May;69(3):140-7. PMID 12035073
  • Redolfi S, Arnulf I, Pottier M, Lajou J, Koskas I, Bradley TD, Similowski T. Attenuation of obstructive sleep apnea by compression stockings in subjects with venous insufficiency. Am J Respir Crit Care Med. 2011 Nov 1;184(9):1062-6. doi: 10.1164/rccm.201102-0350OC. PMID 21836140
  • White LH, Lyons OD, Yadollahi A, Ryan CM, Bradley TD. Effect of below-the-knee compression stockings on severity of obstructive sleep apnea. Sleep Med. 2015 Feb;16(2):258-64. doi: 10.1016/j.sleep.2014.12.005. Epub 2014 Dec 18. PMID 25620198
  • Theriault L, Hermus G, Goldfarb D, Stonebridge C, Bounajm F. Cost Risk Analysis for Chronic Lung Disease in Canada. The Conference Board of Canada, 2012.
  • Braido F, Baiardini I, Ghiglione V, Fassio O, Bordo A, Cauglia S, Canonica GW. Sleep disturbances and asthma control: a real life study. Asian Pac J Allergy Immunol. 2009 Mar;27(1):27-33. PMID 19548627
  • Turner-Warwick M. Epidemiology of nocturnal asthma. Am J Med. 1988 Jul 29;85(1B):6-8. doi: 10.1016/0002-9343(88)90231-8. PMID 3400687
  • Robertson CF, Rubinfeld AR, Bowes G. Deaths from asthma in Victoria: a 12-month survey. Med J Aust. 1990 May 21;152(10):511-7. doi: 10.5694/j.1326-5377.1990.tb125350.x. PMID 2338923
  • Yadollahi A, Singh B, Bradley TD. Investigating the Dynamics of Supine Fluid Redistribution Within Multiple Body Segments Between Men and Women. Ann Biomed Eng. 2015 Sep;43(9):2131-42. doi: 10.1007/s10439-015-1264-0. Epub 2015 Jan 30. PMID 25632892

Identifiers

NCT: NCT03303586 · 16-5845-0

Primary sources (government registries)

View this study on ClinicalTrials.gov ↗