Study of parasympathetic activity among overlap syndrome patients

Study of parasympathetic activity among overlap syndrome patients - Study of parasympathetic activity among overlap syndrome patients

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000019422

Enrollment

Registered

2015-10-20

Start date

2015-03-13

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-OSA Overlap syndrome

Interventions

Overlap syndrome: CPAP treatment, every night, more than 4 hours a day, over 3 months. OSA alone: CPAP treatment, every night, more than 4 hours a day, over 3 months. COPD alone: continue usual COPD t

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Overlap syndrome: Japanease, over 40 years old, FEV1/EVC<70% from spirometry test, and AHI over 5 from PSG test. COPD alone: Japanease, over 40 years old, FEV1/EVC<70% from spirometry test, and AHI under 5 from PSG test. OSA alone: Japanease, over 40 years old, FEV1/EVC over 70% from spirometry test, and AHI over 5 from PSG test.

Exclusion criteria

Exclusion criteria: Patients who have diseases other than COPD which affect on the lung functional test. Patients who have markedly bad general condition.

Design outcomes

Primary

Measure	Time frame
parasympathetic activity from PSG test	—

Secondary

Measure	Time frame
lung function from spirometry test	—

Countries

Japan

Contacts

Public ContactKoichi Fukunaga

Keio University, School of Medicine Pulmonary medicine

k-fuku@jf7.so-net.ne.jp03-5363-3793

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026