Continuous Laryngoscopy Exercise Test: A Method for Visualizing Laryngeal Dysfunction during Exercise

Abstract

The continuous laryngoscopy exercise test was easy to perform, well tolerated, and can be implemented in future diagnostic work-up programs of laryngeal dysfunction.

Associations Between Laryngeal and Cough Dysfunction in Motor Neuron Disease with Bulbar Involvement

“…This study provided Simultaneous laryngeal endoscopy and airflow measures have been collected in prior studies of phonation and vocal fold obstruction during exercise. 73,[84][85][86][87] In this study, the simultaneous measurement procedures were well tolerated across participants, except for instances of gagging with two MND subjects.…”

Dyspneic athlete

“…Physical exam findings are inconsistent in diagnosing PVFMD and flexible laryngoscopy is needed to visualize vocal fold movement to aid in the diagnosis [7••]. Patients with PVFMD show narrowing (adduction) of the vocal cords with both inspiration and expiration, however, there is more marked narrowing on exhalation [54,73,74]. Laryngoscopy can visualize vocal cord movement during regular breathing as well as provocative behaviors (Valsalva, odors, exercising) and then assess corrected motion after therapeutic breathing techniques have been demonstrated [7••].…”

Evaluation of paradoxical vocal cord motion and differential diagnosis

“…[6] Some authors have concluded that PVCM cannot be diagnosed with provocative exercises performed during asymptomatic period but it can be diagnosed during laryngoscopic examination made at the time of an attack or during exercise. [24,25] Heimdal et al developed 'continuous laryngoscopy' technique applied during treadmill exercise and stated that it was useful in establishment of the diagnosis of PVCM during asymptomatic period. [25] In our study, 99 of 100 patients were subjected to provocation maneuvers during asymptomatic period, however any PVCM was not encountered.…”

“…[24,25] Heimdal et al developed 'continuous laryngoscopy' technique applied during treadmill exercise and stated that it was useful in establishment of the diagnosis of PVCM during asymptomatic period. [25] In our study, 99 of 100 patients were subjected to provocation maneuvers during asymptomatic period, however any PVCM was not encountered. In one of our patients who had attack during the examination, inspiratory adduction and posterior glottic fissure were detected at the time of vocal cord motions.…”