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KMID : 1101020170420010001
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Journal of Oral Medicine and Pain
2017 Volume.42 No. 1 p.1 ~ p.7
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Clinical Characteristics and Polysomnographic Features of Patients Visited a Snoring and Sleep Apnea Clinic of Dental Hospital in Korea
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Kim Ji-Rak
Chung Jin-Woo
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Abstract
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Purpose: The aims of this study were to evaluate the clinical characteristics and polysomnographic results of patients visited the Seoul National University Dental Hospital (SNUDH) and to suggest guidelines for the management of sleep disordered-breathing patients in a dental clinic.
Methods: Five hundred sixty-two patients who visited the Snoring and Sleep Apnea Clinic of SNUDH were evaluated for clinical characteristics including associated comorbidities, age, gender, body mass index (BMI), neck circumference, and daytime sleepiness and among them 217 patients were performed nocturnal polysomnography for evaluating respiratory disturbance index, apnea-hypopnea index (AHI), oxygen saturation levels, and sleep stages. The associations among clinical characteristics, sleep parameters, and positional and rapid eye movement (REM) dependencies of the patients were analyzed.
Results: The most common co-morbidities of the patients were cardiovascular (30.2%), endocrine (10.8%), and respiratory diseases (7.9%). Age (β=0.394), total AHI (β=0.223), and lowest O2 saturation levels (β=0.205) were significantly associated with the number of co-morbidities in patients with obstructive sleep apnea (OSA). Mean O2 saturation was not significantly associated with number of co-morbidities. Non-positional OSA patients had higher BMI, longer neck circumferences, more severe AHI values, and lower mean and lowest O2 saturation levels compared to positional OSA patients. Not-REM-related patients were older and had more severe AHI values compared to REM-related patients. Not-REM-related patients have longer duration of stage I sleep and shorter stage II, III, and REM sleep than REM-related patients. There were no significant differences in each sleep stage between positional and non-positional patients. Neck circumference, positional dependency, REM dependency, and percentage of supine position were significantly associated with severity of OSA.
Conclusions: Age, total AHI, and lowest O2 saturation level were significantly associated with the number of co-morbidities in patients with OSA. Neck circumference, positional dependency, REM dependency, and percentage of supine position were significantly associated with severity of OSA.
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KEYWORD
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Obstructive sleep apnea, Polysomnography, REM sleep, Sleep position, Snoring
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