Figure 10 - Relationship between the duration of vocal cords closure and magnitude of the esophageal distention by a balloon.

Duration of vocal cord adduction/abduction for a 2.5-cm balloon was significantly longer than the duration for a 1.5-cm balloon distention. This increase was caused by the increase in the duration of maximal adduction. Abo-Abm, time interval between the onset of post-adduction vocal cord opening to the maximal (resting) position of the cords; Adm-Abo, time interval between maximal vocal cord adduction and onset of the opening of the cords; Ado-Adm, time interval between the onset of vocal cord adduction to the maximal adduction. ^*p <.05.

(Source: Shaker et al.⁵ with permission from American Gastroenterological Association)