Application of High Speed Digital Imaging (HSDI) technique in the diagnosis of dysphonia in patients with laryngopharyngeal reflux disease (LPR)

Introduction Gastroesophageal reflux disease (GERD) may cause extra-esophageal complications, including laryngopharyngeal reflux disease (LPR). It is caused by morphological changes in the laryngeal mucosa due to the regurgitation of gastric contents. Laryngopharyngeal reflux has a wide symptomatology. There is no pathognomonic image of the larynx for LPR. In the diagnosis of LPR, the subjective RSI scale is commonly used, which assesses symptoms in conjunction with the laryngoscopic assessment of the larynx on the RFS scale. The aim of the study was to diagnose the clinical form of dysphonia in patients with laryngopharyngeal reflux (LPR) using the HS camera and HSDI technique. Material and methods The study included a group of 72 patients of both genders, age 20 to 65, who obtained more than 13 points in the RSI scale and more than 7 points in the RFS scale. Results Application of HSDI technique with camera in the high speed (HS) and high resolution (HR) mode allowed precise objective diagnosis of organic and functional disorders of a hyperfunctional dysphonia.