Diagnosis of Sleep Apnea Without Sensors on the Patient's Face.

Diagnosis of Sleep Apnea Without Sensors on the Patient's Face.:

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Diagnosis of Sleep Apnea Without Sensors on the Patient's Face.

J Clin Sleep Med. 2020 Apr 08;:

Authors: Sabil A, Marien C, LeVaillant M, Baffet G, Meslier N, Gagnadoux F

Abstract

STUDY OBJECTIVES: Thermistors, nasal cannulas and respiratory inductance plethysmography (RIP) are the reference sensors (AASM recommendations) for the detection and characterization of apneas and hypopneas. However, these sensors are not well tolerated by patients and have a poor scorability. We evaluated the performance of an alternative method using a combination of tracheal sounds and RIP signals.

METHODS: Consecutive recordings of 70 adult patients from the Pays de la Loire Sleep Cohort were manually scored in a random order using the AASM standard signals and the combination tracheal sound (TS) and RIP signals, TS-RIP, without respiratory sensors placed on the patient's face. The TS-RIP scoring used the TS and RIP-Flow signals for detection of apneas and hypopneas respectively, and the suprasternal pressure (SSP) and RIP belts signals for the characterization of apneas.

RESULTS: Sensitivity (Se) and specificity (Sp) of the TS-RIP combination were 96.21% and 91.34% for apnea detection, and 89.94% and 93.25% for detecting hypopneas, respectively, with a Kappa coefficient of 0.87. For the characterization of apneas, Se and Sp were 98.67% and 96.17% for obstructive apneas, 92.66% and 99.36% for mixed apneas, and 96.14% and 98.89% for central apneas, respectively, with a Kappa coefficient of 0.94. The TS-RIP scoring revealed a high agreement for classifying obstructive sleep apnea (OSA) into severity classes (no OSA, mild, moderate and severe OSA) with a Cohen's Kappa coefficient of 0.96.

CONCLUSIONS: Compared to the AASM reference sensors, the TS-RIP combination allows reliable non-invasive detection and characterization of respiratory events with a high degree of sensitivity and specificity. TS-RIP combination could be used for OSA diagnosis, in adults, either as an alternative or in combination with the recommended AASM sensors.

PMID: 32267226 [PubMed - as supplied by publisher]