Gradual change in methacholine bronchial hyperresponsiveness in bronchial asthma patient population

Gradual change in methacholine bronchial hyperresponsiveness in bronchial asthma patient population - Gradual change in methacholine bronchial hyperresponsiveness

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000019257

Enrollment

200

Registered

2015-10-07

Start date

2015-10-07

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

Bronchial asthma

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Patients with bronchial asthma Bronchial asthma patients who underwent the first methacholine airway hyperresponsiveness test

Exclusion criteria

Exclusion criteria: Patients with apparent infection

Design outcomes

Primary

Measure	Time frame
gradual change of methacholinPC-20(provocative concentration that results in a 20% fall in FEV1) in first methacholine hyperresponsiveness test	—

Secondary

Measure	Time frame
asthma medications, bronchial asthma severity before methacholine hyperresponsiveness test	—

Countries

Japan

Contacts

Public ContactIsogai Sumito

Fujita Health University of Medicine Department of Respiratory Medicine

hirosimax2000@yahoo.co.jp0562-93-2111

Outcome results