The study tries to see the effect of using a combination of platelet-rich fibrin (PRF) and autologous fat as a filler for injection laryngoplasty procedures to treat unilateral adductor vocal cord paralysis.
Age range
18 Years – 70 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Change in Voice Handicap Index-30 (VHI-30) questionnaire score
Timeframe: Before injection, 1 week, 4 week, 8 week post-injection
Changes in Maximum Phonation Time
Timeframe: Before injection, 1 week, 4 week, 8 week post-injection
Changes in Average Fundamental Frequency (F0)
Timeframe: Before injection, 1 week, 4 week, 8 week post-injection
Changes in Jitter and Shimmer
Timeframe: Before injection, 1 week, 4 week, 8 week post-injection
Changes in Noise to Harmonic Ratio (NHR)
Timeframe: Before injection, 1 week, 4 week, 8 week post-injection
Changes in Voice Turbulence Index (VTI)
Timeframe: Before injection, 1 week, 4 week, 8 week post-injection
Changes in Amplitude Tremor Intensity Index (ATRI)
Timeframe: Before injection, 1 week, 4 week, 8 week post-injection
Changes in Vocal Cord Closure Pattern
Timeframe: Before injection, 1 week, 4 week, 8 week post-injection
Changes in Amplitude
Timeframe: Before injection, 1 week, 4 week, 8 week post-injection
Changes in Mucosal Waves
Timeframe: Before injection, 1 week, 4 week, 8 week post-injection
Changes in Vertical Level
Timeframe: Before injection, 1 week, 4 week, 8 week post-injection
Changes in Supraglottic Activity
Timeframe: Before injection, 1 week, 4 week, 8 week post-injection
Changes in Non-vibrating Parts
Timeframe: Before injection, 1 week, 4 week, 8 week post-injection
Changes in Free Edge Contours
Timeframe: Before injection, 1 week, 4 week, 8 week post-injection
Changes in Symmetrical Pattern
Timeframe: Before injection, 1 week, 4 week, 8 week post-injection
Changes in Closure Phase
Timeframe: Before injection, 1 week, 4 week, 8 week post-injection
Changes in The Stability of The Vocal Cords
Timeframe: Before injection, 1 week, 4 week, 8 week post-injection