RecruitingNot ApplicableNCT03109171

Accuracy of the Sensory Test Using the Laryngopharyngeal Endoscopic Esthesiometer in Obstructive Sleep Apnea

Accuracy of the Sensory Test Performed Using the Laryngopharyngeal Endoscopic Esthesiometer and Rangefinder in Patients With Suspected Obstructive Sleep Apnoea Hypopnea (OSA): a Prospective Double-blinded, Randomised, Pilot Study

Sponsor

Fundación Neumologica Colombiana

Enrollment

117 participants

Start Date

Jan 1, 2018

Study Type

INTERVENTIONAL

Conditions

Sensory Disorder Sleep Apnea, Obstructive Larynx

Summary

This is a prospective double blinded randomized crossover controlled trial aiming at validating the measurement of laryngopharyngeal mechanosensitivity in patients with suspected OSA using a recently developed laryngopharyngeal endoscopic esthesiometer and rangefinder (LPEER). Subjects will be recruited from patients with suspected OSA referred for baseline polysomnography to a university hospital sleep laboratory. Intra- and inter-rater reliability will be evaluated using the Bland-Altman's limits of agreement plot, the intraclass correlation coefficient, and the Pearson or Spearman correlation coefficient, depending on the distribution of the variables. Diagnostic accuracy will be evaluate plotting Receiver-operating-characteristic-curves (ROC-curves) using as reference standard basal polysomnogram. The sensory threshold values for patients with mild, moderate, and severe OSA, will be determined and compared using ANOVA or Kruskal Wallis test, depending on the distribution of the variables.

Eligibility

Min Age: 18 Years

Inclusion Criteria1

Patients being 18 years old or more referred to the sleep laboratory of a tertiary care university hospital for a baseline polysomnography for suspected OSA.

Exclusion Criteria17

Bleeding diathesis.
Basal awake oxygen saturation by pulse oximetry below 88%.
Not agree to participate in the study.
Glasgow coma scale below of 15 (to avoid confusion with involvement of laryngopharyngeal reflexes due to neurological disease accompanied by decreased level of consciousness).
Baseline polysomnography that does not meet validity criteria to be interpreted (according to the American Academy of Sleep Medicine).
Baseline polysomnography performed more than 15 days before the sensory testing. Ordinarily, the sensory testing will be performed the same day or the next day of baseline polysomnography.
More than 5% of total apnoea events being of central origin.
History of maxillofacial or pharyngeal surgery (to avoid confusion with involvement of laryngopharyngeal reflexes due to surgery in this region).
Laryngopharyngeal tract malignancies (to avoid confusion with involvement of laryngopharyngeal reflexes due to tumours).
Central Nervous System (CNS) surgery in the last three months or that has left neurological sequelae (to avoid confusion with involvement of laryngopharyngeal reflexes due to sequelae of CNS surgery).
Traumatic brain injury in the last three months or more than three month with neurological sequelae.
History of active neuromuscular disease that affects the muscles of head and neck or with sequels present at the time of the sensory testing (to avoid confusion with involvement of laryngopharyngeal reflexes due to neuromuscular disease).
History of cerebrovascular disease (to avoid confusion with dysphagia or sensory compromise secondary to cerebrovascular disease).
Diabetes (to avoid confusion with diabetic neuropathy that compromises the laryngopharyngeal region).
Chronic use of systemic corticosteroids at a dose greater or equal to 20 mg per day of prednisone or equivalent (to avoid confusion with steroid myopathy that compromises the laryngopharyngeal region).
Upper respiratory tract infection within 15 days prior to the testing (to avoid confusion with neuropathy associated with respiratory viral disease that compromises the laryngopharyngeal region).
Patient's inability to cooperate during the examination (to avoid measurement error caused by the lack of cooperation of the patient).