Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine
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Multicenter Study Observational Study
Varying Hypopnea Definitions Affect Obstructive Sleep Apnea Severity Classification and Association With Cardiovascular Disease.
To compare clinical features and cardiovascular risks in patients with obstructive sleep apnea (OSA) based on ≥ 3% desaturation or arousal, and ≥ 4% desaturation hypopnea criteria. ⋯ A commentary on this article appears in this issue on page 1971.
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Comparative Study
Comparison of Commonly Used Questionnaires to Identify Obstructive Sleep Apnea in a High-Risk Population.
Sleep apnea is associated with adverse health outcomes. Despite being an important comorbidity in obesity, type 2 diabetes, heart failure, and resistant hypertension, it is underdiagnosed in these patient groups. An inexpensive and readily accessible sleep apnea screening tool would help address this problem. We sought to compare three commonly used screening tools. ⋯ There is a high prevalence of undiagnosed symptomatic sleep apnea in high-risk patient groups. The STOP-BANG questionnaire appeared superior, though all questionnaires had significant limitations. Incorporation of STOP-BANG ≥ 3 in this high-risk population might reduce the need for sleep testing in a resource-constrained setting.
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Comparative Study
Oximetry as an Accurate Tool for Identifying Moderate to Severe Sleep Apnea in Patients With Acute Stroke.
Sleep-disordered breathing (SDB) is highly prevalent in patients with acute stroke. SDB is often underdiagnosed and associated with neurological deterioration and stroke recurrence. Polysomnography or home sleep apnea testing (HSAT) is typically used as the diagnostic modality; however, it may not be feasible to use regularly in patients with acute stroke. We investigated the predictive performance of pulse oximetry, a simpler alternative, to identify SDB. ⋯ Nocturnal pulse oximetry has a high diagnostic accuracy in predicting moderate to severe SDB in patients with acute stroke. Oximetry can be a simple modality to rapidly recognize patients with more severe SDB and facilitate the referral to the confirmation sleep study.