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OpenTrials
Completed

NCT Number: NCT01096303

Effects of Marijuana Used on Lung Function in Persons With Chronic Obstructive Pulmonary Disease (COPD)

The main hypothesis is that persons that smoke or smoked tobacco and marihuana have worsen lung function as compared with persons that only smoke or smoked tobacco.

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Key information

Conditions

Chronic Obstructive Pulmonary Disease Behavior Chronic Disease Disease Attributes Lung Diseases Lung Diseases, Obstructive Marijuana Smoking Marijuana Use Pathologic Processes Pathological Conditions, Signs and Symptoms Pulmonary Disease, Chronic Obstructive Respiratory Tract Diseases Smoking Smoking, Non-Tobacco Products

Age range

25 year–90 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Lyndon B Johnson General Hospital, Houston, Texas, United States

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About this study

We will follow persons with already diagnosed COPD (chronic bronchitis and/or emphysema). Obtain their smoking history: tobacco and marihuana and review their pulmonary function study results. Then we are planning to compare both groups.

Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

  • COPD patients former or current tobacco smokers
  • COPD patients former or current tobacco and marihuana smokers

Exclusion criteria

  • History of COPD without pulmonary function testing
  • Refusal to provide smoking or marihuana used history

Treatment and study plan

Primary outcomes

  1. Obstructive limitation in pulmonary function test

    Time frame: 1 year

    Comparison on the severity of obstruction among both groups

Secondary outcomes

  1. Decreased diffusion capacity for carbon monoxide

    Time frame: 1 year

    Comparison on the severity of decreased DLco among groups.

  2. Airtrapping

    Time frame: 1 year

    Comparison on the severity of air-trapping by pulmonary function testing among groups.

Interested in participating?

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Sponsors and collaborators

Lead sponsor

The University of Texas Health Science Center, Houston

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Registry information

Official study title

Effects of Marijuana Smoking on Pulmonary Function in Patients With COPD

Important dates

Study start
2010
Primary completion
2016
Study completion
2016
First posted
Mar 31, 2010
Registry last updated
May 15, 2017

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

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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.

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