Strategies to Improve Asthma and Treatment of Asthma in Canadians

Our study will enroll 644 randomly-selected Canadians who have been diagnosed with asthma by a physician within the previous five years. It will be determined what diagnostic tests were initially performed to make this diagnosis. Participants will undergo lung function testing over 6-8 weeks to determine their respiratory status and to confirm they have asthma. Participants may be followed up to one year depending on their test results.

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Key information

Conditions

Asthma Bronchial Diseases Hypersensitivity Hypersensitivity, Immediate Immune System Diseases Lung Diseases Lung Diseases, Obstructive Respiratory Hypersensitivity Respiratory Tract Diseases

Age range

18 year–100 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Ottawa Hospital

Ottawa, Ontario, K1H 8L6, Canada

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Patient must have a recent diagnosis of asthma by a physician. Diagnosis of asthma must have occurred within 5 years prior to entry into the study.
Patient must be at least 18 years old.

Exclusion criteria

Patients in whom methacholine challenge is contraindicated

Patients using chronic oral prednisone.
Patients with heart attack or stroke within three previous months, and those with known aortic or cerebral aneurysms.
Pregnant patients (unknown effect of methacholine on the fetus) and breastfeeding patients (unknown whether methacholine is excreted in breast milk).
Patients unable to provide informed consent.
Patients not able to perform spirometry and/or methacholine challenge testing.
Patients who have a greater than 10 pack-year smoking history (this will exclude patients with possible COPD).
Patients who currently have active pulmonary Tuberculosis
Patients who have had eye surgery in the past 3 months or who have a detached retina
Patients involved in another interventional asthma study

Sponsors and collaborators

Lead sponsor

Ottawa Hospital Research Institute

Other

Registry information

Official study title

Strategies to Improve Diagnosis and Treatment of Asthma in Canadians

Important dates

Study start: 2011
Primary completion: 2015
Study completion: 2016
First posted: Feb 2, 2012
Registry last updated: Mar 31, 2016

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

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