Vocal cord dysfunction and laryngeal hyperresponsiveness: a function of altered autonomic balance?

Ayres, J. G.; Gabbott, P. L. A.
April 2002
Thorax;Apr2002, Vol. 57 Issue 4, p284
Academic Journal
The article discusses the relation between vocal cord dysfunction and laryngeal hyperresponsiveness. It states that clinically, vocal cord dysfunction often overlaps with the hyperventilation syndrome, a condition also deemed to be largely psychological in origin in which tachypnoe could be explained by the presence of laryngeal hyperresponsiveness and consequent glottic narrowing. Vocal cord dysfunction can mimic or co-exist with severe asthma and apportioning symptoms of the two can be difficult. Preliminary findings in severe asthma suggest that the increase in parasympathetic tone on lying flat is exaggerated in severe asthma compared with mild asthma, which could contribute to nocturnal symptoms in asthma and in vocal cord dysfunction.


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