Symptom Subtypes of Obstructive Sleep Apnea Predict Incidence of Cardiovascular Outcomes
Document Type
Article
Publication Date
2-15-2019
Publication Title
American Journal of Respiratory and Critical Care Medicine
Volume
200
Issue
4
First page number:
493
Last page number:
506
Abstract
Rationale: Symptom subtypes have been described in clinical and population samples of patients with obstructive sleep apnea (OSA). It is unclear whether these subtypes have different cardiovascular consequences. Objectives: To characterize OSA symptom subtypes and assess their association with prevalent and incident cardiovascular disease in the Sleep Heart Health Study. Methods: Data from 1,207 patients with OSA (apnea–hypopnea index ≥ 15 events/h) were used to evaluate the existence of symptom subtypes using latent class analysis. Associations between subtypes and prevalence of overall cardiovascular disease and its components (coronary heart disease, heart failure, and stroke) were assessed using logistic regression. Kaplan-Meier survival analysis and Cox proportional hazards models were used to evaluate whether subtypes were associated with incident events, including cardiovascular mortality. Measurements and Main Results: Four symptom subtypes were identified (disturbed sleep [12.2%], minimally symptomatic [32.6%], excessively sleepy [16.7%], and moderately sleepy [38.5%]), similar to prior studies. In adjusted models, although no significant associations with prevalent cardiovascular disease were found, the excessively sleepy subtype was associated with more than threefold increased risk of prevalent heart failure compared with each of the other subtypes. Symptom subtype was also associated with incident cardiovascular disease (P < 0.001), coronary heart disease (P = 0.015), and heart failure (P = 0.018), with the excessively sleepy again demonstrating increased risk (hazard ratios, 1.7–2.4) compared with other subtypes. When compared with individuals without OSA (apnea–hypopnea index < 5), significantly increased risk for prevalent and incident cardiovascular events was observed mostly for patients in the excessively sleepy subtype. Conclusions: OSA symptom subtypes are reproducible and associated with cardiovascular risk, providing important evidence of their clinical relevance.
Keywords
Obstructive sleep apean; Symptom subtypes; Cardiovascular disease; Sleepiness; Cluster analysis
Disciplines
Cardiovascular Diseases | Diseases | Medicine and Health Sciences
Language
English
Repository Citation
Mazzotti, D. R.,
Keenan, B. T.,
Lim, D. C.,
Gottlieb, D. J.,
Kim, J.,
Pack, A. I.
(2019).
Symptom Subtypes of Obstructive Sleep Apnea Predict Incidence of Cardiovascular Outcomes.
American Journal of Respiratory and Critical Care Medicine, 200(4),
493-506.
http://dx.doi.org/10.1164/rccm.201808-1509OC