Pdr. Spraggs et Ml. Harries, THE MODIFIED VALSALVA MANEUVER TO IMPROVE VISUALIZATION OF THE HYPOPHARYNX DURING FLEXIBLE NASOPHARYNGOSCOPY, Journal of Laryngology and Otology, 109(9), 1995, pp. 863-864
A simple, safe and effective procedure for improving the diagnostic ac
curacy of nasopbaryngoscopy is described. It is most useful for the ex
posure of the hypopharynx, especially in the elderly patient.