Skip to content

Clinical Features of Smoker Patients With Chronic Obstructive Pulmonary Disease

Clinical Characteristics of Chronic Obstructive Pulmonary Patients Who Continue to Smoke

Status
UNKNOWN
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04711629
Enrollment
120
Registered
2021-01-15
Start date
2021-01-31
Completion date
2022-01-31
Last updated
2021-01-15

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

Conditions

Copd, Smoking

Keywords

copd, smoking

Brief summary

Smoking is the most important factor in the etiology of COPD. Some of the patients with COPD continue to smoke despite knowing this situation or they cannot quit even if they want. The aim of this study is; To examine patients with COPD who continue to smoke in terms of perception of dyspnea, exercise capacity, psychological symptoms and quality of life.

Detailed description

The study was designed prospectively. Patients with COPD who apply to the pulmonary rehabilitation outpatient clinic will be included. The data of patients with COPD who are eligible for PR and have been pre-evaluated will be scanned. Respiratory function test, arterial blood gas analysis, six-minute walking test (6-MWT), mMRC Dyspnea Scale, St George Quality of Life Questionnaire and Hospital Anxiety Depression Scale will be used in the study. Patients with COPD who smoke will constitute the study group, and those who quit smoking will constitute the control group.

Interventions

Respiratory function test, arterial blood gas analysis, six-minute walking test (6-MWT), mMRC Dyspnea Scale, St George Quality of Life Questionnaire and Hospital Anxiety Depression Scale

Sponsors

Izmir Katip Celebi University
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SUPPORTIVE_CARE
Masking
NONE

Intervention model description

Smoker COPD Ex Smoker COPD

Eligibility

Sex/Gender
ALL
Age
18 Years to 90 Years
Healthy volunteers
Yes

Inclusion criteria

* Smoker COPD Patients who smoker

Exclusion criteria

* Not volunteer to participate the study

Design outcomes

Primary

MeasureTime frameDescription
Exercise Capacity6 minutesSix minutes walk test

Secondary

MeasureTime frameDescription
Dyspnea Sensation20 minutesModified Medical Research Council (MMRC) dyspnea scale, which consists of 5 items ranging between 1 and 5, to determine the severity of patients' shortness of breath.
Disease Specific Quality of Life20 minutesSt. George's Respiratory Questionnaire (SGRQ) to determine disease-specific quality of life. At this scale, high scores define worsened disease and increased symptoms.
Respiratory Functions30 minutesPulmonary Function Test Pulmonary function test (PFT) which is noninvasive tests that show how well the lungs are working. The tests will measure FEV1; It is the volume of air (in liters) exhaled in the first second during forced exhalation after maximal inspiration. FVC: It s the amount of air that can be forcibly exhaled from your lungs after taking the deepest breath possible, as measured by spirometry FEV1/FVC: It represents the proportion of a person's vital capacity that they are able to expire in the first second of forced expiration (FEV1) to the full, forced vital capacity (FVC).
Depression20 minutesHospital Anxiety and Depression (HAD) Inventory for assessment of anxiety and depression. In this scale; scores of anxiety and depression are calculated separately. The maximum score for both is 21 and high scores correspond to high degree anxiety and depression. Cut-off scores for anxiety and depression were determined as 10/11 and 7/8 respectively.
Body Mass Index5 minutesBody mass index is calculated by dividing body mass by the square of length in meters.
Anxiety20 minutesHospital Anxiety and Depression (HAD) Inventory for assessment of anxiety and depression. In this scale; scores of anxiety and depression are calculated separately. The maximum score for both is 21 and high scores correspond to high degree anxiety and depression. Cut-off scores for anxiety and depression were determined as 10/11 and 7/8 respectively.

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026