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

Overview

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.

Full Title of Study: “Effects of Marijuana Smoking on Pulmonary Function in Patients With COPD”

Study Type

  • Study Type: Observational
  • Study Design
    • Time Perspective: Cross-Sectional
  • Study Primary Completion Date: December 31, 2016

Detailed Description

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.

Arms, Groups and Cohorts

  • COPD tobacco and/or marihuana users
    • COPD patients with history of tobacco and/or marihuana smoking.

Clinical Trial Outcome Measures

Primary Measures

  • Obstructive limitation in pulmonary function test
    • Time Frame: 1 year
    • Comparison on the severity of obstruction among both groups

Secondary Measures

  • Decreased diffusion capacity for carbon monoxide
    • Time Frame: 1 year
    • Comparison on the severity of decreased DLco among groups.
  • Airtrapping
    • Time Frame: 1 year
    • Comparison on the severity of air-trapping by pulmonary function testing among groups.

Participating in This Clinical Trial

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

Gender Eligibility: All

Minimum Age: 25 Years

Maximum Age: 90 Years

Are Healthy Volunteers Accepted: No

Investigator Details

  • Lead Sponsor
    • The University of Texas Health Science Center, Houston
  • Provider of Information About this Clinical Study
    • Principal Investigator: Rosa Estrada Y Martin, Associate Professor – I/M Pulmonary and Critical Care – The University of Texas Health Science Center, Houston
  • Overall Official(s)
    • Rosa M Estrada-Y-Martin, MD, Principal Investigator, The University of Texas Health Science Center, Houston

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