Paradoxical vocal fold motion (intermittent laryngeal obstruction)

While research is lacking in the area of patient outcomes, prognosis for resolution of paradoxical vocal fold motion (intermittent laryngeal obstruction) (PVFM/ILO) is excellent when the condition is accurately diagnosed and treated appropriately. There are case reports of severe cases of PVFM/ILO in patients with other medical complications as well that required aggressive medical treatment, which included botulinum toxin and tracheostomy. Other complications from undiagnosed PVFM/ILO have included unnecessary drug use and high use of medical resources.[74]Ibrahim WH, Gheriani HA, Almohamed AA, et al. Paradoxical vocal cord motion disorder: past, present and future. Postgrad Med J. 2007;83:164-172. http://www.ncbi.nlm.nih.gov/pubmed/17344570?tool=bestpractice.com [108]Maillard I, Schweizer V, Broccard A, et al. Use of botulinum toxin type A to avoid tracheal intubation or tracheostomy in severe paradoxical vocal cord movement. Chest. 2000;118:874-877. http://journal.publications.chestnet.org/article.aspx?articleid=1079121 http://www.ncbi.nlm.nih.gov/pubmed/10988221?tool=bestpractice.com ​​​[110]Park DP, Ayres JG, McLeod DT, et al. Vocal cord dysfunction treated with long-term tracheostomy: 2 case studies. Ann Allergy Asthma Immunol. 2007;98:591-594. http://www.ncbi.nlm.nih.gov/pubmed/17601276?tool=bestpractice.com ​​