Martin B J, Logemann J A, Shaker R, Dodds W J
Department of Communication and Swallowing Disorders, Saint Joseph's Hospital, Atlanta, Georgia 30342-1701.
Dysphagia. 1993;8(1):11-20. doi: 10.1007/BF01351472.
Synchronized videonasendoscopy and respiratory recordings were conducted in six healthy male subjects to evaluate activity of the arytenoid cartilages, true vocal folds, false vocal folds, and epiglottis during repeated trials of three breath-hold maneuvers: EASY hold, INHALE HARD hold, and INHALE/EXHALE HARD hold. Five of the six subjects demonstrated maximal laryngeal valving on the HARD breath-hold conditions. One subject showed maximal laryngeal valving on the EASY hold condition, and rarely demonstrated any medial displacement or contact of the laryngeal valves on either effortful breath-hold maneuver. Arytenoid approximation and true vocal fold closure were produced consistently by the majority of subjects on all breath-hold maneuvers, but false vocal fold approximation and anterior arytenoid tilting were accomplished by the majority of subjects only during the effortful breath-hold conditions. Intratrial and intersubject variation indicated that presence or degree of laryngeal valving cannot be assumed during a breath-hold maneuver. We conclude that videonasendoscopy has merit in assessing a patient's laryngeal valving ability and progress in effectively using a breath-hold maneuver for safe swallowing function.
对6名健康男性受试者进行同步视频鼻内镜检查和呼吸记录，以评估在三种屏气动作（轻松屏气、用力吸气屏气和用力吸气/呼气屏气）的重复试验中杓状软骨、真声带、假声带和会厌的活动情况。6名受试者中有5名在用力屏气条件下表现出最大程度的喉部瓣膜形成。1名受试者在轻松屏气条件下表现出最大程度的喉部瓣膜形成，并且在任何一种用力屏气动作中很少表现出喉部瓣膜的任何内侧移位或接触。大多数受试者在所有屏气动作中均持续出现杓状软骨靠拢和真声带闭合，但大多数受试者仅在用力屏气条件下才完成假声带靠拢和杓状软骨前倾。试验内和受试者间的差异表明，在屏气动作期间不能假定喉部瓣膜形成的存在或程度。我们得出结论，视频鼻内镜检查在评估患者的喉部瓣膜形成能力以及在有效利用屏气动作实现安全吞咽功能方面的进展具有价值。
