Prospective observational study of the impacts of heated tabacco products on lung function over time in patients with chronic obstructive pulmonary disease

Impacts of Heated tabacco products in COPD Patients - Impacts of Heated tabacco products in COPD Patients

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000047377

Enrollment

600

Registered

2022-05-01

Start date

2022-08-01

Completion date

Unknown

Last updated

2026-06-29

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

Conditions

COPD

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1.Patients with chronic obstructive pulmonary disease (including bronchial asthma) 2. Patients with consent

Exclusion criteria

Exclusion criteria: 1. Patients who cannot respond to pulmonary function tests, questionnaires, etc. 2.Patients with lung diseases other than COPD and bronchial asthma (e.g., lung cancer, interstitial pneumonia) 3.Patients deemed ineligible by the attending physician 4.Patients who could not give consent.

Design outcomes

Primary

Measure	Time frame
Lung function (lung capacity, effort lung capacity, forced expiratory volume in 1 secon) by smoking group before and after inhalation of bronchodilators in COPD patients	—

Secondary

Measure	Time frame
1. Acute exacerbation 2. Subjective symptoms (cough, sputum, dyspnea, etc.) 3. Clinical score: COPD Assessment Test (CAT), mMRC 4. Chest CT: emphysema score: Goddard score	—

Countries

Japan

Contacts

Public ContactKazufumii Takamatsu

Kochi Medical School, Kochi University Department of Respiratory Medicine and Allergology

ktakamatsu@kochi-u.ac.jp0888802345

Outcome results