Numbing spray may skew voice tests in reflux patients
Knowledge-focused
Completed
This study investigates whether a topical numbing spray (lidocaine) affects voice recordings during high-speed laryngoscopy in adults with laryngopharyngeal reflux (LPR). Participants receive either lidocaine spray or a placebo on two separate days, and researchers compare voice …
Phase: NA • Sponsor: Mario Bilić • Aim: Knowledge-focused
Last updated Jul 12, 2026 00:00 UTC