Presence Of Dysphonia Research Articles

睡眠障害患者における音声障害と酸逆流症に関する検討

Dysphonia is one of the symptom of gastroesophageal reflux disease (GERD). We examined the relationship of dysphonia and reflux in sleep disorder patients. A sample population of 208 answered questionnaire about presence of dysphonia during the course of study. Of the 208 responders, FSSG (frequency scale for the symptoms of GERD) questionnaires were further conducted on 170 (81.7%) and 135 (64.9%) had laryngeal fiberscopy exams. 37.5% of the sample population was found to have dysphonia and 53.3% had glottic edemas. The ratio of GERD cases was 44.1%. With the presence of dysphonia, a significant difference was found in the grade of vocal cord edema, each score of acid reflux related to the symptoms of 3 out of 7 items, and the total score of the FSSG inquiry list.The likelihood of edema of the vocal cords being found in cases having dysphonia was higher than in subclinical cases of sleep disorder patients, and acid reflux was recognized as a cause of dysphonia, as suggested from the questionnaire results.

Acoustic and perceptual analysis of modal and falsetto registers in females with dysphonia

Modal and falsetto registers are the basic vocal qualities used in female speaking voices. The purpose of this study was to identify the frequency at which modal register changed to falsetto register and the frequency range of each modal and falsetto register produced under three loudness levels: soft, comfortable and loud phonations in normal and dysphonic speakers. These data provide information on the relationship between vocal registers. It is hypothesized that vocal pathologies affect the frequency at which register change from one mode to another mode. Fifteen dysphonic and 15 non‐dysphonic females were assessed on their ability to produce tone series from the lowest to the highest frequency at soft, comfortable and loud phonations. Fourteen listeners served as judges to identify the first production of falsetto voice in each tone series. The first falsetto tone perceived was considered to represent the frequency at which the modal‐falsetto register change occurred perceptually. The change from modal to falsetto register in the tone series occurred between G4 (360.74 Hz) and B4 (485.23 Hz) in the dysphonic group and between A4 (421.00 Hz) and B4 (476.13 Hz) in the non‐dysphonic group among the three loudness levels. The results showed that the presence of dysphonia affected the production of vocal registers The dysphonic group demonstrated the modal‐falsetto register change at a significantly lower frequency and reduced frequency range in the modal register than those of the non‐dysphonic group in the soft and comfortable phonations. In producing falsetto register, the dysphonic group demonstrated reduced ability in producing falsetto register in soft and loud phonations when compared to the non‐dysphonic group. Physiological explanations are used to account for the observations.

Upper airway obstruction.

The airways in infants and children are anatomically different from adults, thus predisposing them to more acute upper airway obstruction. The causes of upper airway obstruction may be infective or non-infective. The presence of dysphonia, dysphagia, abnormal respiratory pattern, cough and abnormal posture suggests upper airway obstruction. The general management consist of supportive care with minimal invasive procedures. The specific treatment depends on the causes and is discussed in text.

Aspiration in bilateral stroke patients

Seventy patients with bilateral strokes underwent neurologic and videofluoroscopic barium swallowing examinations; 34 (48.6%) aspirated. Patients with aspiration were more likely to have posterior circulation strokes, abnormal cough, abnormal gag, and dysphonia. However, patients likely to aspirate can be identified best by the presence of an abnormal voluntary cough, an abnormal gag reflex, or both. The prediction of patients at risk for aspiration was not improved by additional clinical information (ie, presence of dysphonia or bilateral neurologic signs).