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

Effects of Marijuana Smoking on Pulmonary Function in Patients With COPD

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT01096303

Enrollment

200

Registered

2010-03-31

Start date

2010-11-30

Completion date

2016-12-31

Last updated

2017-05-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic Obstructive Pulmonary Disease

Keywords

COPD, pulmonary function, tobacco and marihuana smoking

Brief summary

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.

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.

Interventions

None listed

Study design

Observational model

CASE_CONTROL

Time perspective

CROSS_SECTIONAL

Eligibility

Sex/Gender

ALL

Age

25 Years to 90 Years

Healthy volunteers

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

Design outcomes

Primary

Measure	Time frame	Description
Obstructive limitation in pulmonary function test	1 year	Comparison on the severity of obstruction among both groups

Secondary

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

Countries

United States

Outcome results