Abnormal vocal cord movement in patients with and without airway obstruction and asthma symptoms

Abstract

Paradoxical vocal cord movement is more often associated with asthma symptoms accompanied by airflow limitation and dysfunctional breathing. Further studies are needed to determine whether PVCM is induced by dysfunctional breathing practices and/or airway obstruction. How PVCM links with symptomatic asthma and VCD also requires evaluation.

Comorbid “treatable traits” in difficult asthma: Current evidence and clinical evaluation

“…Dysfunctional breathing has been commonly described in patients with anxiety disorders such as panic disorders . One study also demonstrated an independent association between DB and VCD …”

Investigating the effects of laryngotracheal stenosis on upper airway aerodynamics

“…However, because respiratory function for patients with chronic obstructive pulmonary disease, asthma, and pulmonary fibrosis can be characterized by flow volume loops reflecting intrathoracic pathology, the addition of extrathoracic resistance for patients with LTS can also affect inspiratory and expiratory function in patients with shortness of breath . Therefore, comprehensive management and monitoring of patients with LTS need to include an assessment of both pulmonary and vocal cord function …”

“…2 Therefore, comprehensive management and monitoring of patients with LTS need to include an assessment of both pulmonary and vocal cord function. 64 In conclusion, this study investigated the effect of LTS on airflow dynamics using CFD techniques. Simulated flow results from a normal subject and 10 LTS subjects were analyzed to characterize the changes in flow rate, airflow resistance, and streamlines of velocity.…”

Developments in the field of allergy in 2017 through the eyes of Clinical and Experimental Allergy

“…The range of mechanistic studies undertaken and published in the journal is highlighted by the data from the manuscript by Low et al 10 The difficulty of disentangling vocal cord dysfunction from true wheeze in patients with asthma remains a significant clinical challenge. However, it is likely that in many patients, they are not completely distinct but overlap.…”