Comparison study of endoscopic-guided versus electromyography-guided botulinum toxin injection treatments in adductor spasmodic dysphonia patients

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

TCTR

Registry ID

TCTR20180911002

Enrollment

Registered

2018-09-11

Start date

2019-01-02

Completion date

Unknown

Last updated

2026-08-03

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

Conditions

adductor spasmodic dysphonia spasmodic dysphonia botulinum toxin electromyography endoscopy

Interventions

endoscopic guided botulinum injection at vocalis muscle in spasmodic dysphonia,EMG&#45

guided botulinum injectionat vocalis muscle in spasmodic dysphonia

Experimental Procedure/Surgery,Active Comparator Procedure/Surgery

endoscopic guided botulinum injection,EMG&#45

guided botulinum injection

Eligibility

Sex/Gender

All

Age

18 Years to 70 Years

Inclusion criteria

Inclusion criteria: adductor spasmodic dysphonia patient eligible in the Thai language

Exclusion criteria

Exclusion criteria: pregnancy mental illness others vocal fold disease botulinum toxin allergy coagulation disorders terminal illness

Design outcomes

Primary

Measure	Time frame
fundamental frequency 0,1 month and 3 month acoustic analysis	—

Secondary

Measure	Time frame
maximum phonation time, jitter, shimmer, satisfaction VAS score 0,1 month and 3 month acoustic analysis, interview	—

Contacts

Public ContactPREMSUDA SOMBUNTHAM

King Chulalongkorn Memorial hospital

premsuda.s@chula.ac.th6622564103

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026

Comparison study of endoscopic&#45;guided versus electromyography&#45;guided botulinum toxin injection treatments in adductor spasmodic dysphonia patients