Efficacy of Nasal Speaking Valve (NSV)

Efficacy of Nasal Speaking Valve (NSV) - Efficacy of Nasal Speaking Valve (NSV)

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000026427

Enrollment

350

Registered

2017-03-06

Start date

2017-01-17

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

velopharyngeal incompetence

Interventions

wearing NSV

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: patient who shows dysarthria which could be improved by closing nostrils with fingers

Exclusion criteria

Exclusion criteria: nostrils are not large enough to wear NSV

Design outcomes

Primary

Measure	Time frame
Speech intelligibility before and after wearing NSV	—

Countries

Japan

Contacts

Public ContactShogo Minagi

Okayama University Department of Occlusal and Oral Functional Rehabilitation, Graduate School of Medicine, Dentistry a

minagi@md.okayama-u.ac.jp0862356687

Outcome results

None listed

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