Kellman R M, Leopold D A
Laryngoscope. 1982 Jan;92(1):58-60. doi: 10.1288/00005537-198201000-00012.
Paradoxical vocal cord motion (PVCM) is an important cause of laryngeal stridor and dysphonia; however, only two previous cases have been reported. We report three additional cases, one of which was tracheotomized on two occasions before the diagnosis was made. These patients, typically young females who have had a recent upper respiratory infection, present with stridor. They can phonate weakly, but they cannot cough. Indirect laryngoscopy reveals smooth, symmetric vocal cord adduction on inspiration and abduction on expiration. Laboratory values are normal. PVCM appears to be self-limited (up to 72 hours), and patients respond to supportive care and sedation. Tracheotomy appears to be unnecessary. The etiology is obscure and may be functional; however, a case is discussed in which PVCM was seen in association with chronic aspiration in a patient with organic brain syndrome. An awareness of this entity and a high index of suspicion can prevent unnecessary tracheotomy.
反常性声带运动（PVCM）是喉喘鸣和发音障碍的一个重要原因；然而，此前仅报道过两例。我们报告另外三例，其中一例在确诊前曾两次接受气管切开术。这些患者通常为近期患过上呼吸道感染的年轻女性，表现为喘鸣。她们发声微弱，但无法咳嗽。间接喉镜检查显示吸气时声带平滑、对称内收，呼气时外展。实验室检查值正常。PVCM似乎具有自限性（长达72小时），患者对支持治疗和镇静有反应。气管切开术似乎没有必要。病因不明，可能是功能性的；然而，本文讨论了一例患有器质性脑综合征的患者，其PVCM与慢性误吸相关。认识到这一实体并保持高度怀疑可以避免不必要的气管切开术。
