Table 5.

Treatment of EILO

Study	Number of patients	Number of controls	Treatment method	Aims	Methodology
Maat et al. [13]	10	–	ES with laser incision in both aryepiglottic folds anterior to the cuneiform cartilages and removal of the mucosa around the upper parts of the tubercles	Evaluate the usefulness of the CLE-test as a method for selecting patients for surgical intervention and evaluating treatment effects postoperatively	Ten patients underwent ES. CLE- test was done on each patient before and 3 months after surgery
Chiang et al. [8]	96	–	LCT	The aim was to see of LCT was an effective treatment for EPVFMD	Patients diagnosed with PVFMD via FFL as well as symptoms with exercise were selected. Therapy was reviewed and symptoms outcomes were graded as complete resolution, improvement or unchanged following therapy
Maat et al. [2]	23 surgically treated patients with (ST)	71 conservatively treated patients with breathing exercise (CT)	Laser supraglottoplasty	Reveal the natural history of supraglottic EILO and compare the symptoms, and the function of the larynx in conservatively versus surgically treated patients	Follow-up study of supraglottic EILO was performed. In 94 patients with predominantly supraglottic obstruction a questionnaire-based survey was conducted 2–5 years after EILO diagnosis via CLE test. Seventy-one patients had CT and 23 had ST. A second CLE test was carried out in 14 CT and 19 ST patients

ES endoscopic supraglottoplasty, LCT laryngeal control therapy, ST standard therapy, CT control therapy, EILO exercise induced laryngeal obstruction, FFL flexible fiberoptic laryngoscopy, EPVFMD exercise induced paradoxical vocal fold motion disorder, CLE-test continuous laryngoscopy during exercise test