Open Access<p>A Review of Current Tools Used for Evaluating the Severity of Obstructive Sleep Apnea</p>
Author(s) -
Wenhao Cao,
Jinmei Luo,
Yi Xiao
Publication year - 2020
Publication title -
nature and science of sleep
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.715
H-Index - 34
ISSN - 1179-1608
DOI - 10.2147/nss.s275252
Subject(s) - polysomnogram , medicine , obstructive sleep apnea , hypopnea , apnea , apnea–hypopnea index , disease , sleep apnea , overlap syndrome , hypoxia (environmental) , central sleep apnea , cardiology , intensive care medicine , polysomnography , chemistry , organic chemistry , oxygen
Obstructive sleep apnea (OSA) is a common and heterogeneous disease characterized by episodic collapse within the upper airways, which leads to reduced ventilation and adverse consequences, including hypoxia, hypercapnia, sleep fragmentation, and long-term effects such as cardiovascular comorbidities. The clinical diagnosis of OSA and its severity classification are often determined based on the apnea-hypopnea index (AHI), defining the number of apneic and hypopnea events per hour of sleep. However, the limitations of the AHI to assess disease severity have necessitated the exploration of other metrics for additional information to reflect the complexity of OSA. Novel parameters such as the hypoxic burden have the potential to better capture the main features of OSA by maximizing the information available from the polysomnogram. These emerging measures have described multidimensional qualities of sleep-disordered breathing events and breathing irregularity and will ultimately result in better management of OSA.